Phase3 Chipmunk 370 User manual

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✦✦
✦✦
✦IMPORTANT✦✦
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✦Before beginning assembly, please read and understand the warnings listed on the next page. Failure to
read and understand these warnings could lead to bodily harm and/or injury. The Phase3 Models Chipmunk 370 is not
intended for those under 14 years of age, unless closely supervised by an adult.
OPERATING INSTRUCTIONS
SPECIFICATIONS AND FEATURES:
●Wing Span: 32 Inches (813mm)
●Wing Area: 190 Square Inches (12.25dm2)
●Length: 25 Inches (635mm)
●Weight RTF: 12.5 Ounces (354gr)
●Wing Loading: 9.5 Ounces Per Square Foot (29gr/dm2)
●4-Channel Full-House Functions for Air Show-Style Aerobatics
●Factory-Built and Finished with All Electronics Installed
●Molded Foam Fuselage with Laminated Surfaces for Durability
●Lightweight, One-Piece Wing
●Detailed Factory-Applied Color Scheme
●7.2 Volt 600mAH AAA NiMH Battery
●AC Charger and 12V DC Fast-Charger
●Direct Drive 370 Motor with Propeller
●Easy-to-Access Magnetic Hatch Cover for Battery
Includes 8.4 Volt 600mAH NiMH Battery, AC Charger,
12V DC Fast-Charger and More!
All contents copyright © 2005, Phase3 Models
Version V2.0 January 2006
Kit Product Number: 107110
Inspired by air shows around the world, the Phase3 Models Chipmunk 370 offers spirited performance for intermediate and advanced
pilots. This 4-channel aerobatic aircraft doesn't need big areas to fly, and will still put on a big-time show with its beautiful colors and
advanced performance. Frankly, you'll be impressed by what a lightweight, foam molded aircraft with a 370 motor can do! The high-rpm,
5-inch diameter prop pulls the Chipmunk 370 along at a good speed, giving you the power and authority for most air show-style aerobatics.
Molded from tough, lightweight skinned foam, the fuselage is light and strong. The wing is hollow-core shaped foam with an internal
spar that offers the strength and light weight needed for high performance aircraft. The Chipmunk 370 is easy to finish, too. The
wing is one piece, and the stabilizer is factory-installed along with all the electronics. Even the color scheme is applied. You simply
bolt on the vertical stabilizer, charge the battery, install the wing, and you're ready to fly. The Phase3 Models Chipmunk 370 even has
an easy-access battery hatch retained with magnets, so changing the battery is fast and hassle-free.
✦✦
✦✦
✦CAUTION✦✦
✦✦
✦The Phase3 Models Chipmunk 370 is designed
for intermediate to advanced pilots. It's not intended for
beginner pilots. It is not a trainer!
Phase3 Models
P.O. Box No. 74282
Kowloon Central, Hong Kong, China

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INTRODUCTION
Thank you for purchasing the Phase3 Models Chipmunk 370. Before completing the final assembly of your new airplane,
please carefully read through these operating instructions in their entirety. Doing so will ensure your success the first time
around. As you can see, there's not much to it!
●Identify the Parts and Familiarize Yourself with Your New Chipmunk 370
●Install the Vertical Tail, Wing and Battery
●Test the Controls
●Charge the Battery
●Choose Your Flying Field and Fly!
FOR YOUR SAFETY - PLEASE READ AND UNDERSTAND THESE WARNINGS!
●Do not fly your airplane if another model is on the same
frequency as you.
●Never fly your airplane from the street or at night. Always fly in
an open area free of obstructions.
●When flying, make sure any spectators are behind you.
●Always be conscious of the spinning propeller. Be careful not to
allow loose clothing to be drawn into the propeller.
●Because your airplane is operated by radio control, it is important
to make sure you are always using fresh and/or fully charged
batteries. Never allow the batteries to run low or you could lose
control of the airplane.
●Never attempt to disassemble any of the airplane's components,
especially the electronics.
●Do not allow any of the electrical components to get wet or
electrical damage may occur.
●You should complete a successful range check of your radio
equipment prior to each new day of flying, or prior to the first flight
of a new or repaired airplane.
●If your airplane gets dirty, do not use any solvents to clean it.
Solvents will damage the foam and plastic. Use a dry cloth to
clean any dirt from the outside of the airplane.
GENERAL WARNINGS
●Never overcharge the battery or damage to the battery may
occur.
●To prevent the battery from overheating during the charging
process, allow the battery to completely cool before recharging it.
●Always completely discharge the battery by running the motor
until it stops before recharging the battery.
●Never attempt to disassemble the battery or dispose of it in fire.
The battery should be recycled at an authorized recycling center.
●Always turn on your transmitter before turning on the airplane
and always turn off the airplane before turning off your transmitter.
●Always unplug the battery when not flying the airplane.
●Never cut the receiver antenna shorter or you could lose control
of the airplane during flight.
●When flying the airplane, make sure your transmitter antenna is
completely extended.
●Never attempt to disassemble or modify any of the radio system
components.
FLIGHT BATTERY WARNINGS
RADIO SYSTEM WARNINGS
For more information about the Chipmunk 370 and other Phase3 Models
airplanes and accessories, please visit our website at:
WWW.PHASE3MODELS.COM

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Before beginning assembly, remove the different parts from the box and use the photos below to verify that your kit contains all of
the correct parts.
If your kit is missing a part or if a part appears to be damaged, please contact your regional distributor,
using the Customer Service Information provided on the supplemental sheet included with your kit.
PARTS IDENTIFICATION
Vertical Tail w/Screw
One-Piece Wing
Fuselage w/Horizontal Tail
6C 600mAH NiMH BatteryDC Fast-ChargerAC Charger Rubber Bands and Propeller
●●
●●
●Small Phillips Head Screwdriver
This section lists the items you will need to assemble and fly your new airplane. As you can see, there's not much to it!
RECOMMENDED ITEMS
The Chipmunk 370 includes a 6 cell 600mAH AAA NiMH battery. If you want, you can purchase a second battery (P/N 109055) so that
you have two. That way, you can take two fully-charged batteries with you to fly. That means twice as much fun! See your local
Phase3 Models dealer for purchasing information.
BATTERY UPGRADE TIP
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✦WARNING✦✦
✦✦
✦The battery included with your airplane comes from the factory partially charged. DO NOT charge the battery until
after testing the motor. This will ensure that the battery is run down completely before recharging it. This is important to ensure
that the battery receives a full charge and is cycled before your first flight.
The Center of Gravity (Balance Point) is located 2" to 2-1/2" (51mm - 64mm) behind the
leading edge of the wing, measured at the fuselage sides. The airplane should be balanced upside down.
LOCATING THE CENTER OF GRAVITY
The Chipmunk 370 is designed to balance properly directly out of the box when using the included battery. You may wish to
double-check the balance of the airplane, though, before flying it for the first time or after any repairs are made.
IMPORTANT INFORMATION - PLEASE READ

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BECOMING FAMILIAR WITH THE CHIPMUNK 370
Control Horn: A plastic piece that is secured to the control surfaces. The pushrod wire from the servo inside the airplane attaches to
the control horn, so the control surface can be moved.
Fuselage: The main body of the airplane. All of the main airplane assemblies are attached to the fuselage.
Horizontal Tail: Provides stability for the airplane during level flight.
Propeller: The propeller is attached to the front of the motor. When spinning, the propeller creates forward thrust which pulls the
airplane forward.
Vertical Tail: Provides stability for the airplane during turns.
Wing: The wing has a special airfoil shape and provides the main source of lift for the airplane.
*Photo May Differ From Production Model
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ASSEMBLING THE CHIPMUNK 370
STEP 1: INSTALLING THE VERTICAL TAIL
❑Look carefully at the side of the vertical tail. You will notice a molded
indent on each side.

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❑When satisfied with the alignment, install and gently tighten the
mounting screw to secure the vertical tail into place.
✦✦
✦✦
✦IMPORTANT✦✦
✦✦
✦Don't overtighten the mounting screw or you might
strip the holes in the plastic mounting slot.
❑Push the vertical tail down into the plastic mounting slot in the top of
the fuselage. When aligned properly, the vertical tail should be pushed
down firmly and the molded indent in each side of the vertical tail should
line up with the holes in the sides of plastic mounting slot.
STEP 2: CONNECTING THE RUDDER PUSHROD WIRE
✦✦
✦✦
✦IMPORTANT✦✦
✦✦
✦When you snap the plastic clevis into the control horn in the next procedure, the rudder (control surface on the back of
the vertical tail) might not be centered. That's okay for now. We'll center it by adjusting the clevis later.
❑Carefully snap the plastic clevis on the pushrod wire into the outermost
hole in the rudder control horn.
✦✦
✦✦
✦PRO TIP✦✦
✦✦
✦We suggest installing the clevis into the outermost hole
in the control horn for your first few flights. This will make it easier to
control the airplane. Once you're proficient at flying the airplane, you
can move the pushrod wire into the middle or inner hole to increase
the control response.
STEP 3: INSTALLING THE PROPELLER
❑Firmly push the propeller onto the motor shaft.
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✦PRO TIP✦✦
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✦A spare propeller is included in your kit. We suggest taking this with you when you fly, just in case you break the one
you're currently using.

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STEP 4: INSTALLING THE WING
❑Carefully plug the aileron servo lead from the wing into the 3-prong
plug that is inside the fuselage.
✦✦
✦✦
✦IMPORTANT✦✦
✦✦
✦Make sure that when you connect the plugs that the
polarity matches - brown to black, red to red and orange to white.
✦✦
✦✦
✦IMPORTANT✦✦
✦✦
✦When you install the wing, make sure that you push
the aileron servo wires down into the fuselage and out of the way. This
will prevent them from interfering with the aileron linkage, and they
won't get pinched between the wing and the fuselage.
❑Set the wing onto the fuselage and align the centerline of the wing
with the centerline of the fuselage.
❑Secure the wing to the fuselage using four rubber bands, making sure
that they are looped securely over the plastic mounts at the front and
back of the wing.
✦✦
✦✦
✦IMPORTANT✦✦
✦✦
✦The rubber bands should overlap the plastic supports
on the bottom of the wing. This will ensure that the rubber bands won't
damage the wing.
STEP 5: INSTALLING THE BATTERY
❑Remove the plastic battery cover on the top of the fuselage by simply
pulling up on the back of the battery cover. The battery cover is held in
place using two magnets.
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✦✦
✦✦
✦WARNING✦✦
✦✦
✦Do not charge the battery before installing it. Charging will be done later. Before installing the battery, you'll need to
make sure that your transmitter is turned on and that the throttle control stick is in the full off position (pulled all the way back).
✦✦
✦✦
✦WARNING✦✦
✦✦
✦The Chipmunk 370 does not have an on/off switch. When you plug in the battery, the receiver and servos will be
powered up. Double-check that the throttle control stick is in the full off position (pulled all the way back).

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❑Turn on your transmitter and double-check that the throttle control stick is pulled all the way back.
✦✦
✦✦
✦PRO TIP✦✦
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✦Always make sure you turn on your transmitter first, before plugging in and installing the battery. After you're done
flying, unplug and remove the battery first, then turn off your transmitter. This will prevent unexpected radio signals from interfering
with your radio system.
❑Reinstall the battery cover, making sure that you first slide the front of the battery cover under the back edge of the cowling. The
magnets will hold the back of the battery cover securely in place during flight.
✦✦
✦✦
✦WARNING✦✦
✦✦
✦It's important that the battery be installed in the location shown above. This will ensure that the battery is installed in
the correct position, which will make the airplane fly better. If the battery is installed in the wrong location, the airplane may not balance
properly, which could result in poor flight characteristics.
✦✦
✦✦
✦IMPORTANT✦✦
✦✦
✦After a crash or hard landing, remove the battery cover and double-check that the battery has not moved back. It
should be held firmly in place and not move back during normal flight.
❑Plug the connector on the battery into the connector that is inside the
fuselage. When plugged in properly, the connectors should "click" together.
✦✦
✦✦
✦IMPORTANT✦✦
✦✦
✦As a safety feature, the connectors can only be
plugged in one way.
❑Push the battery down into its slot between the pieces of white
styrofoam. When positioned properly, the back of the battery should be
even with the back of the styrofoam. The battery should be held firmly
in place.
Before actually flying your airplane you should understand how the airplane is controlled. Below we list the four basic flight modes:
Climb: Climbing is controlled by pushing the throttle control stick on your transmitter completely forward to turn on the motor, then by
pulling back on the elevator control stick. When you push forward on the throttle control stick, the motor will turn on. When you pull back
on the elevator control stick, the elevator will move up, causing the airplane to pitch up and climb.
Descent: Descent is also controlled by the throttle and elevator control sticks. When you pull the throttle control stick all the way back,
the motor will turn off and the airplane will begin to descend. To make the airplane descend more, you can also push forward on the
elevator control stick. This will make the elevator move down, causing the airplane to pitch down and descend more quickly.
Right Turn: A right turn is made by moving the aileron control stick. This is the same stick as the elevator control stick, only it moves
right and left. When you move the aileron control stick to the right, the right-side aileron moves up and the left-side aileron moves down,
causing the airplane to bank and turn right.
Left Turn: A left turn is made by moving the aileron control stick. When you move the aileron control stick to the left, the left-side aileron
moves up and the right-side aileron moves down, causing the airplane to bank and turn left.
LEARNING TO FLY THE CHIPMUNK 370
STEP 1: BASIC OPERATION
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Yaw Right and Left: The airplane can be made to yaw right or left (i.e., move the nose of the airplane right or left with minimal bank) by
using the rudder control stick. This is the same stick as the throttle control stick, only it moves right and left. When you move the rudder
control stick to the right, the rudder moves right, causing the nose of the airplane to move to the right. When you move the rudder control
stick to the left, the rudder moves left, causing the nose of the airplane to move to the left. For general flying, you don't really need to use
the rudder, unless making a coordinated turn or when doing aerobatics that use the rudder.
STEP 2: GROUND OPERATIONS TESTING
✦✦
✦✦
✦PRO TIP✦✦
✦✦
✦You'll want to do Ground Operations Testing until the battery no longer has enough power to operate the motor. This will
allow you enough time to become familiar with how the different controls operate and it will prepare the battery for its first full recharge
before flight.
❑Turn on your transmitter, then plug in and install the battery into the fuselage.
✦✦
✦✦
✦WARNING✦✦
✦✦
✦Verify that the throttle control stick is in the full off position (pulled all the way back).
❑Carefully adjust the trim tabs on your transmitter so that they are centered.
❑Looking from the back of the airplane, push the aileron control
stick completely to the left. The left-side aileron should move up and the
right-side aileron should move down.
❑Again looking from the back of the airplane, push the aileron control
stick completely to the right. The right-side aileron should move up
and the left-side aileron should move down.
✦✦
✦✦
✦IMPORTANT✦✦
✦✦
✦If the ailerons do not move in the correct direction,
flip the servo reversing switch on your transmitter.
❑Looking from the back of the airplane, pull the elevator control stick
completely back. The elevator should move up.
❑Again looking from the back of the airplane, push the elevator control
stick completely forward. The elevator should move down.
✦✦
✦✦
✦IMPORTANT✦✦
✦✦
✦If the elevator does not move in the correct direction,
flip the elevator servo reversing switch on your transmitter.
❑Looking from the back of the airplane, push the rudder control stick
completely to the right. The rudder should move right.
❑Again looking from the back of the airplane, push the rudder control
stick completely to the left. The rudder should move left.
✦✦
✦✦
✦IMPORTANT✦✦
✦✦
✦If the rudder does not move in the correct direction,
flip the rudder servo reversing switch on your transmitter.
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❑If the control surfaces are not exactly even with the tail and the wing,
unsnap the clevises and thread them in or out until you're satisfied with
the alignment, then snap the clevises back into the control horns.
Control Throw:
1/2" Up and 1/2" Down
Control Throw:
1/2" Up and 1/2" Down
Control Throw:
3/4" Right and 3/4" Left

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❑Now test the operation of the motor. Double-check that the throttle control stick is pulled completely back. Since there is no arming
switch, the motor is armed when the throttle control stick is in the full off position. The motor will power up when you push the throttle
control stick forward.
✦✦
✦✦
✦WARNING✦✦
✦✦
✦During the motor test, keep everything clear of the propeller, especially fingers and loose clothing.
❑While holding the airplane upright in the air with the propeller pointing away from you, push the throttle control stick completely
forward. The propeller will spin at a high rate of speed.
❑Continue the Ground Operations Testing until the battery no longer has enough power to operate the motor. This should give you
enough time to become familiar with how the airplane's controls operate. Once the battery no longer has enough power to operate the
motor, remove the battery cover and unplug and remove the battery.
GETTING READY TO FLY THE CHIPMUNK 370
STEP 1: CHARGING THE BATTERY
✦✦
✦✦
✦IMPORTANT✦✦
✦✦
✦Before charging the battery, the battery must be fully discharged. Discharge the battery by running the motor until
it stops. This will ensure that you don't overcharge the battery.
The battery can be charged using either the AC charger or the DC fast-charger. Note that the DC fast-charger features a
socket-style input connector. This connector can be plugged into your vehicle's cigarette lighter or 12V power socket.
Depending on your vehicle, you may need to turn the key into the accessory position to power the charger.
Battery Charging Tips:
●Always run the motor until it stops before recharging the battery. This will ensure that the battery is properly discharged.
●Charge-time using the AC wall charger for a fully discharged battery is approximately 2 hours.
●Charge-time using the DC fast-charger for a fully discharged battery is approximately 20-30 minutes.
●If the battery becomes hot to the touch, unplug it from the charger immediately.
●Always allow the battery to completely cool before recharging it.
●Never leave the battery unattended during the charging process.
❑To unplug the connectors, squeeze the tab on the battery connector and pull the two connectors apart.
❑After charging the battery, install it into the fuselage, using the same techniques as when you installed it previously.
✦✦
✦✦
✦WARNING✦✦
✦✦
✦Always remove the battery from the fuselage for the charging process.
❑Plug the battery connector into the battery charger connector. When
plugged in properly the connectors should "click" together.
✦✦
✦✦
✦PRO TIP✦✦
✦✦
✦As a safety feature, the connectors can only be plugged
in one way.
❑Plug the charger into an AC wall outlet.
❑Charge the battery for 2 hours. Be careful not to overcharge
the battery.
If the battery is hot to the touch,
it is fully charged. Unplug it from
the charger immediately.
USING THE AC WALL CHARGER
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FOR INFORMATION ON USING THE DC FAST-CHARGER, PLEASE SEE THE NEXT PAGE.

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USING THE DC FAST-CHARGER
❑Plug the socket connector from the DC fast-charger into your vehicle's cigarette lighter or 12V power socket.
❑Plug the battery connector into the battery charger connector. When plugged in properly the connectors should "click" together.
✦✦
✦✦
✦PRO TIP✦✦
✦✦
✦As a safety feature, the connectors can only be plugged in one way.
Before using the DC fast-charger, please read the battery charging tips on the previous page. Please also read and understand the
warnings below that are specific to the DC fast-charger.
●Do not attempt to disassemble the DC fast-charger.
●Do not charge any other type or size of battery using the DC fast-charger.
●Do not modify the socket-style input connector.
●Do not block the cooling holes and vent slots during the charging process. Do not set the charger on carpet during the charging process.
●Your vehicle can be running during the charging process, but start your vehicle first to prevent any power surge that could damage
the charger.
❑To unplug the connectors, squeeze the tab on the battery connector and pull the two connectors apart.
❑After charging the battery, install it into the fuselage, using the same techniques as when you installed it previously.
✦✦
✦✦
✦WARNING✦✦
✦✦
✦Always remove the battery from the fuselage for the charging process.
❑When the charger has power and the battery is plugged in, the LED
will be solid red.
✦✦
✦✦
✦IMPORTANT✦✦
✦✦
✦Depending on your vehicle, you may need to turn the
key into the accessory position to power the charger.
❑Press the CHARGE button once and the LED will turn green and
begin to blink. This indicates that the battery is charging.
❑Allow the battery to charge. When the LED turns solid green, the
battery has been fully charged and should be removed from the charger.
❑Until you become a proficient flyer you should always plan on flying your airplane when there's no wind. We strongly suggest
waiting for a calm day. If it's windy and you attempt to fly, it will only make learning to fly the airplane more difficult.
Once you are proficient at flying the airplane, you can fly the airplane in light wind - no more than 10-15 miles per hour. Flying
in stronger wind is not recommended.
STEP 2: CHOOSING A DAY TO FLY
❑The flying field you choose should be a large, open field with grass. There should not be any vehicles, buildings, power lines, trees,
large rocks or anything else that your airplane can crash into.
STEP 3: CHOOSING YOUR FLYING FIELD
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STEP 4: RANGE TESTING YOUR RADIO CONTROL SYSTEM
After getting out to your flying field, but before you fly for the first time, you should range test your radio control system. This will ensure
that the transmitter is "talking" correctly to the airplane. You should do this before every first flight of the day and after you have a hard
landing, crash, or after a repair.
❑Turn on your transmitter, then plug in the battery and install it into the fuselage.
❑Set the airplane on the ground. With your transmitter's antenna completely collapsed, move the control sticks on your transmitter
several times to check the controls. They should operate smoothly.
❑Walk approximately 50ft. from the airplane and move the control sticks on your transmitter once more. Check to make sure that the
controls are operating smoothly at this distance.
YOUR FIRST FLIGHT
After all this, we bet you're ready to actually go flying! If you've skipped anything prior to this section, we suggest going back through the
instructions. Doing so will help ensure your success.
Some Things to Remember:
●With the battery fully charged, you can expect anywhere from 4-6 minutes of flight time, so plan your landing accordingly.
●Make sure that your flying field has no obstructions you can fly into.
●The flying field should be large enough that you can land anywhere if you get into trouble. Until you are proficient at flying the
airplane, you don't want to have to worry about landing in a small, localized area.
●There should be no wind during your first few flights; also try to orientate yourself so you're not looking directly into the sun while flying.
●Fully charge the battery just before coming to the flying field. Do not charge the battery the night before, then go flying the next day.
The battery will have lost some charge and it won't produce full power.
●Double-check that the aileron, elevator and rudder control surfaces are moving in the correct direction.
●Double-check that the aileron, elevator and rudder control surfaces are centered and that the trim tabs on your transmitter are
centered, too.
***WARNING***WARNING***WARNING***WARNING***WARNING***WARNING***
If at any time during your flight, the airplane gets stuck up in a tree, in power lines or on a roof top, DO NOT attempt to retrieve the
airplane yourself. The airplane is not worth the risk. We strongly suggest contacting your local fire department for assistance.
Attempting to retrieve the airplane yourself in any of these cases could potentially result in extreme harm or even death.
●With your transmitter turned on and the battery installed in the fuselage, carefully extend the transmitter antenna completely.
●Double-check that the throttle control stick is in the off position, then carefully grasp the fuselage just behind the wing with your thumb
and forefingers. While holding your transmitter in your other hand, push the throttle control stick forward to check that the motor powers
up. Now, pull the throttle control stick completely back.
●If there is any wind, turn to face it. While holding the throttle control stick completely forward (the propeller will spin very fast), hold the
airplane just above shoulder level and gently toss the airplane straight ahead and level. Allow the airplane to fly straight and continue to
hold the throttle control stick completely forward so that the airplane climbs.
✦✦
✦✦
✦PRO TIP✦✦
✦✦
✦If the airplane begins losing altitude after launching, pull back gently (only a small amount) on the elevator control
stick. This will cause the airplane to gently pitch up and climb. The airplane may start to bank right or left after launching, too. If this
happens, gently move the aileron control stick right or left to level the wing.
HAND LAUNCHING THE CHIPMUNK 370
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12
FLYING THE CHIPMUNK 370
●Once the airplane is in the air, keep the motor running and allow the airplane to continue to climb. After reaching about 80 - 100 feet of
altitude you should start making shallow turns, moving the aileron control stick right or left, to keep the airplane near you.
✦✦
✦✦
✦PRO TIP✦✦
✦✦
✦We recommend trying to keep the airplane near you while flying. The airplane is small, so if it gets too far away it will be
difficult for you to see. This will make it more difficult to learn to fly the airplane and could result in complete visual loss of the airplane.
●Now that the airplane has climbed to a safe altitude you can begin to learn the basics of flight. General flying should be done with the
motor at full power. You control the altitude of the airplane by moving the elevator control stick either forward or back. Moving the
elevator control stick forward will cause the airplane to pitch down and lose altitude, and moving the elevator control stick back will cause
the airplane to pitch up and gain altitude. These control inputs should be done gently, so you don't overcontrol the airplane.
✦✦
✦✦
✦PRO TIP✦✦
✦✦
✦When the airplane climbs you will notice that it will begin to lose speed. You'll also notice that the airplane will gain speed
when it descends. If you climb too steeply, the airplane may slow down so much that it stops flying and stalls. Conversely, if you
descend too steeply, the airplane may fly so fast that you begin to lose control. For these reasons, we suggest using small, gentle
control inputs to prevent this from happening.
●To turn the airplane, you need to move the aileron control stick in the direction you want the airplane to turn, either right or left. To
make smooth, gentle turns, gently move the aileron control stick in the direction you want the airplane to turn and HOLD the aileron
control stick in that position for a second or two and the airplane will begin to turn. After the airplane has turned in the direction you want,
move the aileron control stick gently in the opposite direction to level the wing, then allow the aileron control stick to return to center.
✦✦
✦✦
✦PRO TIP✦✦
✦✦
✦The longer you hold the aileron control stick over, the tighter radius the airplane will turn in. We recommend gentle turns
until you are proficient with the flight characteristics of the airplane.
✦✦
✦✦
✦WARNING✦✦
✦✦
✦Do not hold the aileron control stick either right or left for more than a few seconds. Hold it over only long enough for
the airplane to begin to bank and turn. Holding the aileron control stick over longer can cause the airplane to roll completely over,
possibly causing a crash to occur.
●When going into a turn, the airplane will have a natural tendency to lose some altitude. Unless you want to descend, you should gently
pull back on the elevator control stick to keep the airplane level during the turn. The steeper the turn the more altitude the airplane will
lose and the more you will need to pull back on the elevator control stick.
●You should continue to fly, making circles and S-turns for about 3 minutes or so. This will give you plenty of time for landing.
Remember for now to keep the motor at full power and use gentle control inputs to keep the airplane level throughout the entire flight.
Also remember to keep in mind that when you make turns the airplane will want to lose altitude, so you'll need to pull back gently on the
elevator control stick to keep the airplane level.
●After some practice, you will become familiar with the flying characteristics of the airplane. Soon you will be able to fly the airplane
through basic aerobatic maneuvers with ease!
When flying the airplane toward you, you will notice that it seems that the right and left controls are reversed. An easy way to
learn to overcome this confusion is to move the right/left control stick toward the "lower" wing to level the airplane. You can
also try to "envision yourself in the cockpit." This helps a lot when trying to coordinate right and left turns when the airplane
is flying toward you.
●Landing should always be done into the wind with the wing level. To prepare for landing from normal flight, make a shallow turn so that
the airplane is flying directly into the wind. Make small turns to level the wing, then pull back completely on the throttle control stick to
turn off the motor. When you do this, the airplane will gradually descend straight ahead.
●Allow the airplane to gradually descend. If the airplane seems to be descending too fast, gently pull back on the elevator control
stick to make the airplane pitch up to level flight. This will bleed off speed and slow the descent. Once the airplane has slowed down,
release the elevator control stick and allow the airplane to continue its descent. Once the airplane is about 15 feet off the ground, make
sure that the wing is level and continue a shallow descent. Just before touch-down, gently pull back on the elevator control stick to level
the airplane with the ground for landing.
✦✦
✦✦
✦PRO TIP✦✦
✦✦
✦If you need to turn the airplane while descending for landing, make gentle, shallow turns. Making steep turns may cause
the airplane to stall and crash. Also, you should just try to land anywhere on your flying field, as long as it's into the wind. Don't try to
land in a particular spot. You can do that once you've mastered flying the airplane.
LANDING THE CHIPMUNK 370
Continued On Next Page ☛☛
☛☛
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13
●After landing, unplug and remove the battery from the fuselage and allow it to cool completely before recharging it for your next flight.
If you're flying the airplane and it seems to always want to turn right or left or pitch up or down, use the rim tabs on your transmitter to
correct these tendencies. We suggest flying the airplane straight ahead and level, then letting go of the control sticks for a few
seconds. Watch what the airplane does. It may pitch up or down, or it may turn right or left, or it may do a combination of these. Do this
several times to double-check your findings. If the airplane does one of the following while in straight and level flight without your hand
on the control sticks, move the following trim tab(s) to correct it:
●If the airplane pitches up: Move the elevator trim tab forward a couple of clicks.
●If the airplane pitches down: Move the elevator trim tab back a couple of clicks.
●If the airplane turns right: Move the aileron trim tab left a couple of clicks.
●If the airplane turns left: Move the aileron trim tab right a couple of clicks.
●If the airplane yaws right: Move the rudder trim tab left a couple of clicks.
●If the airplane yaws left: Move the rudder trim tab right a couple of clicks.
You can make these changes while you are flying, but we suggest having a friend move them for you so you don't lose sight
of the airplane. We also recommend moving the trim tabs only a couple of clicks at a time so you don't over-correct for
the trim problem.
FLIGHT-TRIMMING THE CHIPMUNK 370
While you're flying your airplane, there comes a time when you might crash. If the crash isn't too bad, most damage can be repaired
quickly and easily. If the damage is beyond repair, spare parts are available for purchase. If a foam part is going to break during a crash
it will usually break cleanly. To repair a clean break, follow the procedures below:
❑Glue the broken parts together, using a thin layer of 5 minute epoxy or white glue, following the directions on the glue bottle. Hold the
parts together and in alignment until the glue fully cures.
❑Apply a strip of clear tape over the seams to strengthen the joint even more.
✦✦
✦✦
✦PRO TIP✦✦
✦✦
✦It is very important that you use no solvents or Cyanoacrylate (C/A) glue, which can damage foam. If any of these
chemicals comes in contact with the foam parts, the parts will be destroyed. Use only epoxy or white glue to repair damaged foam parts.
FIXING MINOR CRASH DAMAGE
●Before recharging the battery, let the motor run until the battery is discharged and the motor won't run any longer. This will ensure
you don't overcharge the battery.
●Do not recharge the battery if it is hot. Wait for the battery to cool before recharging it.
●Never leave the battery plugged into the airplane unless you are flying or testing the controls.
●Never cut or otherwise shorten the receiver antenna or you will lose control of the airplane in a very short distance. Let the antenna
hang behind the back of the fuselage.
●Before each flight, do a quick motor test to make sure that the motor is producing full power. If it isn't, you may need to charge the
battery longer. If using the AC wall charger, do not charge the battery longer than 2 hours. If using the DC fast-charger, do not charge
the battery more than one cycle (approximately 30 minutes). Charging the battery longer than recommended can cause damage to
the battery. If the battery becomes hot to the touch, remove it from the charger immediately.
●Before each flight, double-check that the control surfaces are moving in the correct direction.
●When you fly, orientate yourself so that the sun is at your back. Don't fly directly into the sun or you may lose sight of the airplane.
●Separate batteries can be purchased and charged before going to the flying field. An extra battery will double your flight time. See
the replacement parts list on the next page for the part number of the battery.
FLIGHT TIPS AND WARNINGS
Continued On Next Page ☛☛
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14
●Do not fly in wind over 10-15 miles per hour, or the airplane will be very difficult to control and a crash might occur.
●Do not fly your airplane if another model is on the same frequency as you.
●Always be conscious of the spinning propeller. Be careful not to allow loose clothing to be drawn into the propeller.
●If you're under 14 years of age we suggest you fly while accompanied by an adult.
●Never attempt to disassemble any of the airplane's components, especially the battery, charger and other electronics.
●Do not allow any of the electrical components to get wet or damage may occur.
●Periodically double-check that the propeller is firmly pushed onto the motor shaft. If the propeller is damaged, replace it immediately.
●If you have encountered any trouble with any of the steps listed in these operating instructions, or with how the airplane flies,
please refer to the troubleshooting guide on page # 15. The troubleshooting guide is provided to help you find a quick and
immediate resolution to any number of problems that might occur.
CHIPMUNK 370 REPLACEMENT PARTS
Phase3 Models stocks a complete line of replacement parts for your Chipmunk 370. Listed below are the replacement parts that are
available, along with their respective part numbers for easy ordering convenience. We suggest ordering directly from your local Phase3
Models dealer.
If your local dealer does not stock Phase3 Models products, you can order directly from your regional distributor,
using the Customer Service Information provided on the supplemental sheet with your kit.
109044
Operating Instructions
109045
Fuselage w/Motor & Cowling
109046
Wing Assembly
109047
Stabilizer (Tail) Set
109048
Battery Cover
109049
Cowling
109050
Propeller (2)
109051
370 Motor (Regular Shaft)
109052
9.6V 10Amp ESC
109053
110V AC Charger
109054
220V AC Charger
109055
6C 7.2V 600mAH NiMH Battery
109027
Micro Servo
109018
12V DC Fast-Charger

15
TROUBLESHOOTING GUIDE
This troubleshooting guide has been provided to help you diagnose and solve most problems that you may encounter with your
airplane. Most problems encountered can be solved by carefully following the problem-cause-solution sections below.
If you cannot solve the problem using this troubleshooting guide, please feel free to contact your
regional distributor, using the Customer Service Information provided on the supplemental sheet included with your kit.
PROBLEM CAUSE SOLUTION
1) Motor does not turn on A) Battery depleted A) Recharge battery
B) Battery not plugged in B) Plug in battery
C) Motor not armed C) Cycle throttle from low to high and back to low
D) A crash has damaged an internal component D) Contact Phase3 Models
2) Airplane is difficult to control A) You are flying in too much wind A) Fly when there is no wind
B) Battery depleted B) Recharge Battery
C) You are over-controlling C) Use small, gentle control inputs
3) Airplane constantly turns A) You are flying in too much wind A) Fly when there is no wind
right or left without any B) The airplane is out of trim adjustment B) Adjust the trim as described on page # 13
control input
4) Airplane constantly climbs or A) You are flying in too much wind A) Fly when there is no wind
descends without any B) The airplane is out of trim adjustment B) Adjust the trim as described on page # 13
control input
5) Airplane will not climb A) Battery is depleted A) Fully charge the battery as described on page # 9
B) Propeller is damaged B) Check and replace propeller
C) Motor is damaged C) Check and replace motor
D) The airplane is out of trim adjustment D) Center the control surface as described on page # 13
6) The battery is warm A) This is normal A) The battery will be warm when fully charged.
after charging It should not be hot to the touch
7) The motor vibrates A) Propeller is damaged A) Check and replace propeller
excessively B) Motor is damaged B) Check and replace motor
8) Control surfaces move the A) Servo direction is reversed A) Adjust servo reversing switches as described on page # 8
wrong direction
9) DC fast-charger has no A) No power from your vehicle A) Turn vehicle key into accessory position
power
WARRANTY INFORMATION CAN BE FOUND ON THE BACK PAGE

16
Before returning your airplane for warranty consideration, the status of the unit must be within the guarantee as stated at the bottom of
this page. Do not return your airplane to the place of purchase. They are not authorized or equipped to perform warranty work on
Phase3 Models products. When requesting warranty service, please observe the following:
●Crash damage will not be covered under warranty. Do not request warranty service for a crash-damaged product.
●Always send the airplane complete. Please unplug and remove the battery from the airplane, but include it in the package for testing.
●Include a note detailing the problem or service you are requesting. Service cannot be provided without this information. Include your
daytime phone number, shipping address and/or email address in the event we need more details pertaining to the service requested.
●You may request an estimate of services at the time you return your airplane for service. An omission of this request implies
permission for Phase3 Models to service your airplane at our discretion.
●Include a method of payment for any service charges.
●Send the unit to us by United Parcel Service, Federal Express or by Insured Mail.
For the proper return shipping address, please refer to the supplemental sheet included with your kit.
Do not return your kit to the address shown on the front of these operating instructions.
You can also go to www.Phase3Models.com for more information.
Phase3 Models guarantees this kit to be free from defects in both material and workmanship, at the date of purchase. This does not
cover any component parts damaged by use, misuse or modification. In no case shall Phase3 Models's liability exceed the
original cost of the purchased kit.
In that Phase3 Models has no control over the final assembly or material used for final assembly, no liability shall be assumed for any
damage resulting from the use by the user of the final user-assembled product. By the act of using the final user-assembled
product, the user accepts all resulting liability.
WARRANTY SERVICE INFORMATION
OUR GUARANTEE
Your Phase3 Models Chipmunk 370 is warranted against manufacturer defects in materials and workmanship for a period of 90 days
from the date of purchase. Warranty service will be provided within 90 days of the date of purchase only if you are able to provide the
original or a copy of the original dated sales receipt.
IMPORTANT WARRANTY INFORMATION