Horizon Hobby TOWER HOBBIES ASW28 2.0m PNP User manual

INSTRUCTION MANUAL
®®
560214
Created 09/22
TOWA1275

2
Safety Precautions and Warnings
Table of Contents
NOTICE
All instructions, warranties and other collateral documents are subject to change at the sole discretion of Horizon Hobby, LLC. For up-
to-date product literature, visit horizonhobby.com or towerhobbies.com and click on the support or resources tab for this product.
AGE RECOMMENDATION: Not for children under 14 years. This is not a toy.
MEANING OF SPECIAL LANGUAGE
The following terms are used throughout the product literature to indicate various levels of potential harm when operating this product:
WARNING: Procedures, which if not properly followed, create the probability of property damage, collateral damage, and serious injury
OR create a high probability of supercial injury.
CAUTION:Procedures, which if not properly followed, create the probability of physical property damage AND a possibility of serious injury.
NOTICE:Procedures, which if not properly followed, create a possibility of physical property damage AND little or no possibility of injury.
WARNING: Read the ENTIRE instruction manual to become familiar with the features of the product before operating. Failure to
operate the product correctly can result in damage to the product, personal property and cause serious injury.
This is a sophisticated hobby product. It must be operated with caution and common sense and requires some basic mechanical
ability. Failure to operate this Product in a safe and responsible manner could result in injury or damage to the product or other
property. This product is not intended for use by children without direct adult supervision. Do not use with incompatible components or
alter this product in any way outside of the instructions provided by Horizon Hobby, LLC. This manual contains instructions for safety,
operation and maintenance. It is essential to read and follow all the instructions and warnings in the manual, prior to assembly, setup or
use, in order to operate correctly and avoid damage or serious injury.
As the user of this product, you are solely responsible for operating in a manner that does not endanger yourself and others or result in
damage to the product or the property of others.
• Always keep a safe distance in all directions around your model
to avoid collisions or injury. This model is controlled by a radio
signal subject to interference from many sources outside your
control. Interference can cause momentary loss of control.
• Always operate your model in open spaces away from full-size
vehicles, trafc and people.
• Always carefully follow the directions and warnings for this and
any optional support equipment (chargers, rechargeable battery
packs, etc.).
• Always keep all chemicals, small parts and anything electrical
out of the reach of children.
• Always avoid water exposure to all equipment not specically
designed and protected for this purpose. Moisture causes
damage to electronics.
• Never place any portion of the model in your mouth as it could
cause serious injury or even death.
• Never operate your model with low transmitter batteries.
• Always keep aircraft in sight and under control.
• Always use fully charged batteries.
• Always keep transmitter powered on while aircraft is powered.
• Always remove batteries before disassembly.
• Always keep moving parts clean.
• Always keep parts dry.
• Always let parts cool after use before touching.
• Always remove batteries after use.
• Always ensure failsafe is properly set before ying.
• Never operate aircraft with damaged wiring.
• Never touch moving parts.
Specications.................................................................................. 3
Box Contents .................................................................................. 3
Components.................................................................................... 3
Assembly......................................................................................... 4
Center of Gravity ............................................................................. 5
Before Every Flight .......................................................................... 5
Flight Time....................................................................................... 5
Flying Tips ....................................................................................... 5
Troubleshooting............................................................................... 6
Replacement Parts.......................................................................... 6
Limited Warranty ............................................................................. 8
Warranty and Service Contact Information ..................................... 9

3
Specifications Components
Box Contents
• Wingspan: 2020mm (with wingtips attached)
2000mm (without wingtips attached)
• Length: 1165mm
• Flying Weight: 1800g
• Flight Time: 10-15 minutes
• Motor: 3542, 850kV
• ESC: 40A Brushless
• Servos: 9g, Metal Gear (6)
• Propeller: 11 x 6
• Transmitter: 6+ Channel (not included)
• Receiver: Spektrum™AR631 recommended (not included)
• Battery: 4S 2200mAh 30C (not included)
• Fuselage
• Left and right wing panels
• Horizontal stabilizer
• Winglets
• Wing tubes
• Screw Set and Servo Arms

4
Assembly
1. Take out the fuselage, horizontal stabilizer
and accessory bag.
4. To attach the optional wingtips, take out
the wing panels and wingtips.
2. Connect the servo plug on the horizontal
stabilizer to the servo cable socket in the
vertical stabilizer.
5. Attach the wingtips to the mounting slots
on the ends of the wing panels.
7. Screw the wing spar joiners into the
mounting hole of the fuselage.
3. Attach the horizontal stabilizer to the
vertical stabilizer with two M3 x 17mm
screws.
8. Slide the wing panels onto the joiners and
secure the panels to the fuselage with
four M4 x 10mm screws.
6. Take out the fuselage, assembled wing
panels, wing spar joiners and accessory
bag.

5
Center of Gravity
Flight Time
Flying Tips
Before Every Flight
70~78mm
Check the position of the center of gravity (CG) as shown in the diagram, 70-78mm back from the leading edge of the wing at the
fuselage. Setting the correct CG is essential for successful ight.
Based on the specications of the recommended battery (not included), we suggest setting a ight timer to 4 minutes of powered ight.
The actual ight time will vary depending on the battery used, aircraft weight, ight conditions and the ying style of the pilot.
When the timer expires, do not y too far downwind to prevent not being able to return safely. Land the aircraft and recharge the battery.
To help avoid ight accidents, ground inspections should be performed prior to every ight.
• Ensure all screws are secure, the servo arms and horns are properly connected and the wing is properly secured.
• Install the recommended battery (not included), adjusting the placement to ensure the center of gravity is correct, as recommended in
the manual.
• Ensure both the ight battery and the transmitter battery are undamaged and fully charged.
• Ensure the transmitter throttle stick is at the lowest position prior to powering on the aircraft.
• After the aircraft is powered on, perform a control surface check to ensure both proper travel and the surfaces return to neutral when
the transmitter sticks are returned to neutral.
• With all body parts and loose items away from the propeller and the aircraft securely held, gently push the throttle up to check for
correct rotation of the propeller.
• For inexperienced pilots, always seek assistance from an experienced pilot.
• We suggest you practice your ying skills on an RC ight simulator before attempting to y this model.
• The rst ights should be made at an altitude above 50 meters at approximately half throttle, until you become familiar with the ight
characteristics of the aircraft.
• Always take off and land into the wind.
• Always y the aircraft in front of you. Do not y the aircraft directly above your head or behind yourself.

6
Troubleshooting
Replacement Parts
Problem Possible Cause Solution
Aircraft will not respond to the
throttle but tesponds to other
controls
ESC is not armed Lower throttle stick and throttle trim to lowest
settings
Throttle channel is reversed Reverse throttle channel on the transmitter
Extra propeller noise or vibration
Damaged spinner, propeller, motor or mount Replace damaged parts
Loose propeller and spinner parts Tighten parts for propeller adapter, propeller and
spinner
Propellor installed backwards Remove and install the propeller correctly
Reduced ight time
or aircraft is underpowered
Flight battery charge is low Completely recharge ight battery
Propeller installed backwards Remove and install the propeller correctly
Flight battery damaged Replace the ight battery and follow ight battery
instructions
Control surface does not move,
or is slow to respond to control
inputs
Control surface, control horn, linkage or servo
damage
Replace or repair damaged parts and adjust
controls
Wire damaged or connections loose Do a check of connections for loose wiring
Controls reversed Channels are reversed in the transmitter Do the control direction test and adjust controls
for aircraft and transmitter
Motor loses power or pulses
then loses power
Damage to motor or battery
Do a check of batteries, transmitter, receiver,
ESC, motor and wiring for damage and replace as
needed
ESC uses default soft Low Voltage Cutoff (LVC) Land aircraft immediately and recharge the ight
battery
LED on receiver ashes slowly Power loss to the receiver
Check connection from the ESC to the receiver
Check servos for damage
Check linkages for binding
TOWA127501
Fuselage
TOWA127503
Canopy Hatch
TOWA127502
Wing Set
TOWA127506
Spinner
TOWA127504
Horizontal Stabilizer
TOWA127507
Propeller; 11x6

7
TOWA127515
Propeller Adapter
TOWA127514
Wing Tubes
TOWA127508
Screws and Servo Arms
TOWA127513
Decal Set
TOWA127512
40A ESC (XT60 Connector)
TOWA127509
Main Wheel, 44mm
TOWA127510
Wing Wiring Set
TOWA127511
3542-850Kv Outrunner Motor
TOWA127505
Winglet Set
TOWA127516
9g Sub-Micro MG Servo, 80mm Lead
All servos are the same, however replacing
various servos may require an additional servo
extension lead. Use the table below to find the
correct servo extension for each servo:
Servo Position Extension required
Elevator no extension
Rudder 70mm
Ailerons 570mm
Left Flap 130mm
Right Flap 220mm

8
What this Warranty Covers
Horizon Hobby, LLC, (Horizon) warrants to the original purchaser
that the product purchased (the “Product”) will be free from
defects in materials and workmanship at the date of purchase.
What is Not Covered
This warranty is not transferable and does not cover (i) cosmetic
damage, (ii) damage due to acts of God, accident, misuse, abuse,
negligence, commercial use, or due to improper use, installation,
operation or maintenance, (iii) modication of or to any part of the
Product, (iv) attempted service by anyone other than a Horizon
Hobby authorized service center, (v) Product not purchased from
an authorized Horizon dealer, (vi) Product not compliant with
applicable technical regulations, or (vii) use that violates any
applicable laws, rules, or regulations.
OTHER THAN THE EXPRESS WARRANTY ABOVE, HORIZON
MAKES NO OTHER WARRANTY OR REPRESENTATION, AND
HEREBY DISCLAIMS ANY AND ALL IMPLIED WARRANTIES,
INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES
OF NON-INFRINGEMENT, MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE. THE PURCHASER
ACKNOWLEDGES THAT THEY ALONE HAVE DETERMINED THAT
THE PRODUCT WILL SUITABLY MEET THE REQUIREMENTS OF
THE PURCHASER’S INTENDED USE.
Purchaser’s Remedy
Horizon’s sole obligation and purchaser’s sole and exclusive
remedy shall be that Horizon will, at its option, either (i) service, or
(ii) replace, any Product determined by Horizon to be defective.
Horizon reserves the right to inspect any and all Product(s)
involved in a warranty claim. Service or replacement decisions are
at the sole discretion of Horizon. Proof of purchase is required for
all warranty claims. SERVICE OR REPLACEMENT AS PROVIDED
UNDER THIS WARRANTY IS THE PURCHASER’S SOLE AND
EXCLUSIVE REMEDY.
Limitation of Liability
HORIZON SHALL NOT BE LIABLE FOR SPECIAL, INDIRECT,
INCIDENTAL OR CONSEQUENTIAL DAMAGES, LOSS OF
PROFITS OR PRODUCTION OR COMMERCIAL LOSS IN ANY
WAY, REGARDLESS OF WHETHER SUCH CLAIM IS BASED
IN CONTRACT, WARRANTY, TORT, NEGLIGENCE, STRICT
LIABILITY OR ANY OTHER THEORY OF LIABILITY, EVEN IF
HORIZON HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
DAMAGES. Further, in no event shall the liability of Horizon
exceed the individual price of the Product on which liability
is asserted. As Horizon has no control over use, setup, nal
assembly, modication or misuse, no liability shall be assumed
nor accepted for any resulting damage or injury. By the act of use,
setup or assembly, the user accepts all resulting liability. If you
as the purchaser or user are not prepared to accept the liability
associated with the use of the Product, purchaser is advised to
return the Product immediately in new and unused condition to
the place of purchase.
Law
These terms are governed by Illinois law (without regard to conict
of law principals). This warranty gives you specic legal rights,
and you may also have other rights which vary from state to state.
Horizon reserves the right to change or modify this warranty at any
time without notice.
WARRANTY SERVICES
Questions, Assistance, and Services
Your local hobby store and/or place of purchase cannot provide
warranty support or service. Once assembly, setup or use of the
Product has been started, you must contact your local distributor
or Horizon directly. This will enable Horizon to better answer your
questions and service you in the event that you may need any
assistance. For questions or assistance, please visit our website
at www.horizonhobby.com, submit a Product Support Inquiry,
or call the toll free telephone number referenced in the Warranty
and Service Contact Information section to speak with a Product
Support representative.
Inspection or Services
If this Product needs to be inspected or serviced and is compliant
in the country you live and use the Product in, please use the
Horizon Online Service Request submission process found on
our website or call Horizon to obtain a Return Merchandise
Authorization (RMA) number. Pack the Product securely using a
shipping carton. Please note that original boxes may be included,
but are not designed to withstand the rigors of shipping without
additional protection. Ship via a carrier that provides tracking
and insurance for lost or damaged parcels, as Horizon is not
responsible for merchandise until it arrives and is accepted at
our facility. An Online Service Request is available at http://
www.horizonhobby.com/content/service-center_render-service-
center. If you do not have internet access, please contact Horizon
Product Support to obtain a RMA number along with instructions
for submitting your product for service. When calling Horizon,
you will be asked to provide your complete name, street address,
email address and phone number where you can be reached
during business hours. When sending product into Horizon, please
include your RMA number, a list of the included items, and a brief
summary of the problem. A copy of your original sales receipt
must be included for warranty consideration. Be sure your name,
address, and RMA number are clearly written on the outside of the
shipping carton.
NOTICE: Do not ship LiPo batteries to Horizon. If you have
any issue with a LiPo battery, please contact the appropriate
Horizon Product Support office.
Warranty Requirements
For Warranty consideration, you must include your original sales
receipt verifying the proof-of-purchase date. Provided warranty
conditions have been met, your Product will be serviced or
replaced free of charge. Service or replacement decisions are at
the sole discretion of Horizon.
Non-Warranty Service
Should your service not be covered by warranty, service will be
completed and payment will be required without notication or
estimate of the expense unless the expense exceeds 50% of the
retail purchase cost. By submitting the item for service you are
agreeing to payment of the service without notication. Service
estimates are available upon request. You must include this
request with your item submitted for service. Non-warranty service
estimates will be billed a minimum of ½ hour of labor. In addition
you will be billed for return freight. Horizon accepts money orders
and cashier’s checks, as well as Visa, MasterCard, American
Express, and Discover cards. By submitting any item to Horizon
for service, you are agreeing to Horizon’s Terms and Conditions
found on our website http://www.horizonhobby.com/content/
service-center_render-service-center.
ATTENTION: Horizon service is limited to Product compliant in
the country of use and ownership. If received, a non-compliant
Product will not be serviced. Further, the sender will be
responsible for arranging return shipment of the un-serviced
Product, through a carrier of the sender’s choice and at the
sender’s expense. Horizon will hold non-compliant Product
for a period of 60days from notification, after which it will be
discarded.
10/15
Limited Warranty

9
Warranty and Service Contact Information
Country of Purchase Horizon Hobby Contact Information Address
United States of America
Horizon Service Center
(Repairs and Repair Requests) servicecenter.horizonhobby.com/RequestForm/
2904 Research Rd
Champaign, IL 61822
Horizon Product Support
(Product Technical Assistance)
[e-mail]
877-504-0233
Sales [e-mail]
800-338-4639
European Union
Horizon Technischer Service [e-mail] Hanskampring 9
D 22885 Barsbüttel,
Germany
Sales: Horizon Hobby GmbH [phone]

10

11

©2022 Horizon Hobby, LLC.
Tower Hobbies, the Tower Hobbies logo, and the Horizon Hobby logo are trademarks or registered trademarks of Horizon Hobby, LLC.
The Spektrum trademark is used with permission of Bachmann Industries, Inc.
All other trademarks, service marks and logos are property of their respective owners. US 8,672,726 US 9,056,667
http://www.horizonhobby.com/
Created 09/22 TOWA1275 560214