AEROPRAKT A22LS-POH-04 Owner's manual

Aeroprakt Ltd.
24, Polevaya str., Kiev, Ukraine
Tel: [phone]
Fax: [phone]
e-mail: [email protected].ua
www.aeroprakt.kiev.ua
AEROPRAKT-22LS
Pilot Operating Handbook
A22LS-POH-04
Airplane Model: AEROPRAKT-22LS (A-22LS)
Airplane Registration Number: N270L
Airplane Serial Number: 270
Date of issue: 03.01.16
Approved by: Yuriy Yakovlyev
Position: Chief designer
Date of approval: 03.01.16
This manual must be carried in the airplane at all times.
This airplane is to be operated in compliance with information and limitations contained herein.

AEROPRAKT-22LS Pilot Operating Handbook A22LS-POH-04
2
RECORD OF MANUAL REVISIONS
No part of this manual may be reproduced or changed in any manner without a written
consent of the Manufacturer.
Any revision of the present manual, except actual weighing data, must be recorded in the
following table according to information from the Manufacturer.
New or amended text in the revised pages will be indicated by a black vertical line on the
left hand margin, and the Revision No. and the date will be shown on the bottom left hand
side of the page.
Rev. No.
Affected
Section
Affected
Pages
Date
Approval
Date
Date
Inserted
Signature

AEROPRAKT-22LS Pilot Operating Handbook A22LS-POH-04
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Table of contents
1Introduction...................................................................................................................5
2General information .....................................................................................................6
2.1 General description of the airplane .........................................................................6
2.2 Airplane specifications ............................................................................................6
3Limitations ....................................................................................................................7
3.1 Airspeeds and Airspeed Indicator markings............................................................7
3.2 Service ceiling .........................................................................................................8
3.3 Maneuvering load factors ........................................................................................8
3.4 Approved maneuvers ..............................................................................................8
3.5 Fuel capacity and type ............................................................................................8
3.6 Engine.....................................................................................................................8
3.7 Kinds of operation limits ..........................................................................................9
3.8 Crosswind limitation ................................................................................................9
4Emergency procedures..............................................................................................10
4.1 General .................................................................................................................10
4.2 Emergency checklists ...........................................................................................10
Engine failure.................................................................................................................10
Loss of engine power in flight ........................................................................................10
Restarting engine in flight ..............................................................................................10
Emergency landing without engine power .....................................................................11
Precautionary landing with engine power ......................................................................11
Glide11
Smoke and fire ..............................................................................................................12
Failures of the engine management system (EMS warning lights) ................................12
Recovery from unintentional stall and spin ....................................................................12
5Normal Procedures ....................................................................................................13
5.1 General .................................................................................................................13
5.2 Preflight check.......................................................................................................13
5.3 Engine starting ......................................................................................................15
5.4 Taxiing...................................................................................................................16
5.5 Before takeoff........................................................................................................17
5.6 Normal takeoff.......................................................................................................17
5.7 Short/soft field takeoff ...........................................................................................17
5.8 Climb.....................................................................................................................18
5.9 Cruise....................................................................................................................18
5.10 Approach...............................................................................................................18
5.11 Normal landing ......................................................................................................18
5.12 Short/soft field landing...........................................................................................19
5.13 Balked landing.......................................................................................................19

AEROPRAKT-22LS Pilot Operating Handbook A22LS-POH-04
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6Performance................................................................................................................20
6.1 General .................................................................................................................20
6.2 Takeoff and landing distances...............................................................................20
6.3 Climb performance................................................................................................20
6.4 Cruise speeds and fuel consumption at various RPM settings..............................20
7Weight and Balance and Equipment List .................................................................21
7.1 Weight and Balance Chart ....................................................................................21
7.2 Installed equipment list..........................................................................................22
8Airplane and Systems Descriptions .........................................................................23
8.1 General .................................................................................................................23
8.2 Airframe.................................................................................................................23
8.3 Landing gear .........................................................................................................24
8.4 Engine and its controls..........................................................................................24
8.5 Propeller................................................................................................................24
8.6 Fuel system...........................................................................................................25
8.7 Airplane control systems .......................................................................................26
8.8 Instrument panel ...................................................................................................33
8.9 Full and static pressure system.............................................................................35
8.10 Electrical system ...................................................................................................35
8.11 Seats and harness belts........................................................................................40
8.12 Cockpit doors ........................................................................................................40
8.13 Baggage container ................................................................................................40
9Aircraft Ground Handling and Servicing ..................................................................41
9.1 Introduction ...........................................................................................................41
9.2 Towing, parking and tie-down instructions ............................................................41
9.3 Servicing fuel, oil and coolant................................................................................41
9.4 Approved fuel and oil ............................................................................................42
9.5 Cleaning and care .................................................................................................42
9.6 Disassembling and assembling the airplane .........................................................42
10 Supplements...............................................................................................................45
10.1 General .................................................................................................................45
10.2 Engine manual ......................................................................................................45
10.3 Avionics and special engine instruments ..............................................................45
10.4 Recovery system...................................................................................................45
10.5 Floats ....................................................................................................................45
10.6 List of installed equipment.....................................................................................46
10.7 Actual empty weight and CG position data............................................................47
10.8 Airplane Flight Training Supplement .....................................................................48
10.9 Airplane Owner Feedback to Manufacturer...........................................................51
10.10 Glider and banner towing.................................................................................52

AEROPRAKT-22LS Pilot Operating Handbook A22LS-POH-04
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1 Introduction
This Pilot Operating Handbook has been prepared to provide the airplane owner and
operators with information required for the safe and efficient operation of this airplane.
The following ASTM standards have been and/or shall be used for the design, construction
and continued airworthiness of this Aeroprakt-22LS (A-22LS) airplane:
F2245-16 Standard Specification for Design and Performance of a Light Sport Airplane,
F2295-10 Standard Practice for Continued Operational Safety Monitoring of a Light Sport
Aircraft,
F2316-12 Standard Specification for Airframe Emergency Parachutes,
F2339-06 Standard Practice for Design and Manufacture of Reciprocating Spark Ignition
Engines for Light Sport Aircraft,
F2506-13 Standard Specification for Design and Testing of Light Sport Aircraft Propellers,
F2746-14 Standard Specification for Pilot's Operating Handbook (POH) for Light Sport
Airplane,
F2972-15 Standard Specification for Light Sport Aircraft Manufacturer’s Quality Assurance
System.
This A-22LS airplane was manufactured by:
Aeroprakt Ltd.
Address: 24 Polyova str.
Kyiv, 03056
UKRAINE
Tel.: [phone]
Fax: [phone]
E-mail: [email protected]
www.aeroprakt.kiev.ua
Should the original manufacturer of the aircraft loose its ability to support this aircraft make
and model, contact:
Dennis Long
65 Country Place
Oakland, TN. USA
[email protected]
[phone]

AEROPRAKT-22LS Pilot Operating Handbook A22LS-POH-04
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2 General information
2.1 General description of the airplane
AEROPRAKT-22LS (A-22LS) is a two-seat, high-wing strut braced monoplane of "classic"
aerodynamic layout with closed cockpit, non-retractable landing gear with steerable nose
wheel, Rotax-912 engine with tractor three-blade on-ground adjustable pitch propeller.
AEROPRAKT-22LS is approved for flying in VFR, simple meteorological conditions.
AEROPRAKT-22LS is certified in the LSA (Light Sport Airplane) category.
2.2 Airplane specifications
Specification
US units
Metric
Wing span
31 ft. 4 in
9.55 m
Wing area
136 sq. ft.
12.62 m²
Length
20 ft. 5 in
6.23 m
Height
8 ft. 2 in
2.47 m
Wheel base
4 ft. 2 in
1.26 m
Wheel track
5 ft. 7 in
1.71 m
Gross weight (Maximum Take-Off Weight, MTOW)
1320 lb.
600 kg
Top speed at sea level, ISA conditions (with wheels landing gear)
114 mph
183 km/h
Cruising speed at 1000 ft., ISA conditions, and engine RPM:
4000
68 mph
110 km/h
4600
92 mph
148 km/h
4800
97 mph
156 km/h
5000
100 mph
161 km/h
5200
104 mph
167 km/h
Range with full tanks (with 2x45 l tanks, 30 min. reserve) at
1000 ft., ISA conditions, 4000 RPM (with wheels landing gear)
609 sm
981 km
Best angle of climb speed (VX), IAS
56 mph
90 km/h
Best rate of climb speed (VY), IAS
62 mph
100 km/h
Stalling speed at MTOW, flaps up (VS), IAS
48 mph
77 km/h
Stalling speed at MTOW, full flaps (VS0), IAS
37 mph
60 km/h
Maximum engine power at 5800 RPM (5 minutes limit)
100 hp
73.5 kW
Total fuel capacity
30.1 US gal
114 l
Usable fuel
29.9 US gal
113 l
Approved fuel types: unleaded Mogas min. RON 95 or avgas 100LL

AEROPRAKT-22LS Pilot Operating Handbook A22LS-POH-04
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3 Limitations
3.1 Airspeeds and Airspeed Indicator markings
Scheme of color markings of airspeed indicator is shown on Fig. 1. Explanations are given
in the table below:
Marking
IAS value or range
Significance
km/h
mph
kts
White arc start
60
37
32
Stalling speed at maximum takeoff weight
with full flaps (VS0)
Green arc start
77
48
42
Stalling speed at maximum takeoff weight
with flaps up (VS)
White arc
60-148
37-92
32-80
Flap extended speed range (VS0 to VFE)
Green arc
77-168
48-104
42-90
Normal operating range (VSto VO)
Green arc end -
Yellow arc start
168
104
90
Operating maneuvering speed (VO) at gross
weight and minimum weight
Yellow arc
168-229
104-142
90-124
Maneuvers must be conducted with caution
and only in smooth air (VOto VNE)
Red line
229
142
124
Maximum speed for all operations (VNE)
Fig. 1

AEROPRAKT-22LS Pilot Operating Handbook A22LS-POH-04
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3.2 Service ceiling
Service ceiling of A-22LS with Rotax-912ULS (100 hp) engine is equal to at least 5000 m.
However A-22LS has neither pressurized cockpit, no oxygen equipment and therefore may
not be used for high-altitude flight.
3.3 Maneuvering load factors
Limit load factors for the airplane at gross weight of 600 kg (1320 lb.) are as follows:
Maximum positive limit load factor +4.0
Maximum negative limit load factor -2.0
3.4 Approved maneuvers
A-22LS airplane belongs to a non-aerobatic category. All maneuvers shall be done within
its airspeed and maneuvering load factor limits (G limits). Approved maneuvers include:
- turns with bank angles up to 60°,
- side-slipping with angles up to 15°,
- level and accelerated stalls without spinning,
- diving at a speed below VNE of 229 km/h (142 mph, 124 kts) IAS.
Any aerobatics including intentional spinning is prohibited!
3.5 Fuel capacity and type
standard
optional
Capacity of tanks:
2×45 l
(2×11.9 US gal)
2×57 l
(2×15.05 US gal)
Total fuel capacity:
90 l
(23.8 US gal)
114 l
(30.1 US gal)
Total usable fuel:
89 l
(23.5 US gal)
113 l
(29.8 US gal)
Non-usable fuel:
1 l
(0.3 US gal)
1 l
(0.3 US gal)
Approved fuel types: unleaded Mogas min. RON 95 or avgas 100LL.
3.6 Engine
This aircraft is equipped with a four-cylinder four-stroke Rotax-912iS (100 hp) combined
cooling engine produced by BRP-Powertrain GmbH&Co KG. (Austria).
The engine is has the flat-four layout, dry sump lubrication system with a separate oil tank
of 3 l (0.8 US gal) capacity, automatic valve clearance adjustment, two carburetors,
mechanical membrane fuel pump, double electronic ignition system, integrated water
pump, electrical starter, integrated gearbox of 2.43 reduction ratio.
All engine systems (fuel, electrical, cooling) are assembled in accordance with Rotax-
912iS engine operation and installation manuals.

AEROPRAKT-22LS Pilot Operating Handbook A22LS-POH-04
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Engine data and operational limitations are given in the table below:
Engine manufacturer:
BRP-Powertrain GmbH&Co KG (Austria)
Engine model:
Rotax-912iS
Maximum takeoff power:
100 hp.
Time limit at full power:
5 min (5800 rpm)
Max. revolutions (no time limit)
5500 rpm
Min. revolutions at idle
1400 rpm
Max. coolant temperature
120°C (248°F)
Oil temperature, normal
minimum
maximum
90-110°C (190-230°F)
50°C (120°F)
130°C (266°F)
Max. exhaust gas temperature:
950°C (1742°F)
Oil pressure, normal
minimum
maximum
2.0-5.0 bar (29-73 psi) (above 3500 RPM)
0.8 bar (12 psi) (below 3500 RPM)
7 bar (100 psi) (at cold start, allowed for a short time)
Fuel pressure: minimum
maximum
2.8 bar (45 psi)
3.2 bar (42 psi)
Fuel:
unleaded Mogas min. RON 95 European standard
EN 228 Super, EN 228 Super plus or avgas 100LL
Oil:
any automotive oil of API classification “SG” or higher
Ambient temperature:
max. in flight
max. at start
min. at start
60°C (140°F) (manifold temperature)
50°C (120°F) (ambient temperature)
-20°C (-13 °F) (oil temperature)
NOTE: On all issues of engine operation see Rotax engine Operator's Manual.
Follow its instructions to ensure safe and efficient operation of the engine
3.7 Kinds of operation limits
This aircraft is approved for flying day and night, VFR, simple meteorological conditions.
Flight into icing conditions is prohibited.
3.8 Crosswind limitation
Maximum crosswind component for A-22LS airplane is 7 m/s (14 kts).
It is highly recommended to choose upwind direction for takeoff and landing with the least
crosswind. It will significantly shorten takeoff and landing distances and increase degree of
safety.

AEROPRAKT-22LS Pilot Operating Handbook A22LS-POH-04
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4 Emergency procedures
4.1 General
This section contains recommendations to the pilots in case of emergency in flight.
However such situations, caused by airframe or engine malfunction are extremely rare
provided that pre-flight inspections and checks are performed regularly.
4.2 Emergency checklists
Engine failure
During take-off roll
1. Throttle –IDLE.
2. Lane A and B –OFF.
3. Fuel pumps 1 and 2 –OFF.
4. Brakes –APPLY as necessary.
After take-off below 300m (1000 ft.)
1. Direction –NO TURN BACK.
2. Airspeed –100 KPH (54 KTS) - best glide.
3. Throttle –IDLE.
4. Lane A and B –OFF.
5. Fuel pumps 1 and 2 –OFF.
6. Battery switch –OFF.
7. Fuel valves –CLOSE.
8. Landing –STRAIGHT AHEAD, avoid colliding with obstacles.
Loss of engine power in flight
During climb above 300m (1000 ft.) or in level flight
1. Fuel valves –BOTH OPEN.
2. Fuel pump 1 –OFF and Fuel pump 2 –ON.
3. ECU Voltage –CHECK.
4. EMERGEN POWER switch –ON if ECU Voltage 9 V or less.
5. Airspeed –100 km/h (62 mph, 54 kts) - best glide.
6. Landing area –SELECT (consider altitude and wind).
Restarting engine in flight
1. Throttle –APPROX. 50-55% OF THROTTLE LEVER TRAVEL.
2. Fuel level –CHECK.
3. Fuel valves –BOTH OPEN.
4. Fuel pump 1 –ON and 2 –OFF.

AEROPRAKT-22LS Pilot Operating Handbook A22LS-POH-04
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5. Lane A and B –CHECK ON.
6. EMERGEN POWER switch –ON.
7. START button –PRESS until engine start (maximum 10 seconds).
8. Fuel pump 2 –ON.
9. Throttle –AS REQUIRED.
10. EMERGEN POWER switch –OFF (if engine runs smoothly and at least one of the
Lane A or Lane B warning lights is not permanently ON).
11. EMS lamps A and B ON –perform PRECAUTIONARY LANDING see section. 3.2.6.
Emergency landing without engine power
1. Airspeed –100 km/h (62 mph, 54 kts) - best glide.
2. Flaps –position 1.
3. Fuel pumps 1 and 2 –OFF.
4. Fuel valves –CLOSE.
5. Landing area –SELECT, consider altitude and wind. (No place suitable for landing –use
recovery system.)
6. Emergency call –TRANSMIT (121.5 MHz or nearest airfield frequency).
7. Flaps –EXTEND FULLY on final.
8. Landing –in the SELECTED place, avoid colliding with obstacles.
9. Touchdown –at minimum speed.
Precautionary landing with engine power
(In case of decision to discontinue the flight with engine running)
1. Airspeed –SELECT SAFE for the particular situation.
2. Throttle –SET to maintain selected airspeed.
3. Fuel –CHECK level and valves.
4. Map –CHECK for nearest airfields/area suitable for landing.
5. Landing area –SELECT.
6. Radio –REPORT decision to land on the selected place if necessary.
7. Landing –follow NORMAL or SHORT-FIELD landing procedure as appropriate.
Glide
1. Recommended glide speed –100 kph (54 kts) - flaps up, 90 kph (49 kts) - flaps down.
2. Best glade ratio –10 (flaps up).
3. Minimum sink rate –3 m/s (590 fpm).

AEROPRAKT-22LS Pilot Operating Handbook A22LS-POH-04
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Smoke and fire
On start
1. Fuel pumps 1 and 2 –OFF.
2. Fuel valves –CLOSE.
3. Lane A and B –OFF.
4. Unfasten seat belts, abandon cockpit.
5. Take measures to extinguish the fire or stop formation of smoke.
In flight
1. Lane A and B –OFF.
2. Fuel pumps 1 and 2 –OFF.
3. Fuel valves –CLOSE.
4. Yoke –PUSH to descend.
5. Speed –below 222 kph (120 kts).
6. Landing area –SELECT (consider altitude and wind).
7. Landing –in the SELECTED place, avoid colliding with obstacles.
8. Unfasten seat belts, abandon cockpit.
9. Take measures to extinguish the fire or stop formation of smoke.
Failures of the engine management system (EMS warning lights)
Lane A
Lane B
Action
OFF
Flashing
Continue the flight (but not longer than 10 hours)
Flashing
OFF
OFF
ON
Perform precautionary landing, see section 6.6.
Flashing
Flashing
Flashing
ON
ON
OFF
ON
Flashing
ON
ON
Recovery from unintentional stall and spin
1. Rudder pedals –FULLY AGAINST ROTATION.
2. Yoke –PUSH slightly forward of neutral.
3. Rotation stopped –rudder pedals NEUTRAL.
4. Speed reached 100 kph (54 kts) –PULL YOKE GENTLY to recover from diving.
Do not exceed +4g and 222 kph (120 kts)!
WARNING: Intentional spinning in A-22LS is prohibited!
NOTE: In level flight and during turn stall warning is assured by the aerodynamic
characteristics of A-22LS –gentle shaking of the airplane and yoke due to the
starting airflow separation.

AEROPRAKT-22LS Pilot Operating Handbook A22LS-POH-04
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5 Normal Procedures
5.1 General
This section describes normal procedures recommended for safe operation of the A-22LS.
5.2 Preflight check
Pilots must inspect the general condition of the airplane during its preflight check. The
airplane must have no damage or maladjustments that may be critical for the flight safety.
The cockpit glass, propeller, wing and empennage must be clean of rainwater, snow, frost,
ice, and dirt as they impair visibility and aerodynamics and increase weight.
Preflight check must be performed according to the following order and requirements:
5.2.1 Entire airplane
1. Covers and clamps –REMOVED.
2. Airplane –CLEAN of rainwater, snow, frost, ice and dirt.
3. Rigging –CHECK visually.
4. External damage –NONE.
5.2.2 Power plant
1. Propeller and spinner –CLEAN, INTACT and SECURE.
2. Top cowling –REMOVE for engine inspection.
3. Oil, coolant and braking fluid –CHECK level.
4. Engine mount and vibration dampers –NO CRACKS and INTACT.
5. Cables and hoses –INTACT and SECURE.
6. Fuel, oil, coolant leaks –NONE.
7. Exhaust system, its attachments, joints and springs –NO CRACKS and INTACT.
8. Top cowling –INSTALL back.
9. Cowling and its locks –INTACT and LOCKED.
5.2.3 Landing gear
1. Wheel fairings –CLEAN, INTACT and SECURE.
2. Wheel pressure –OK.
3. Tires –NO CRACKS, WEAR OK.
4. Main wheel brakes –CLEAN, INTACT and SECURE.
5. Braking fluid –NO LEAKS.
6. Nose and main legs –NO CRACK and INTACT.
7. Nose leg shock absorber –INTACT.

AEROPRAKT-22LS Pilot Operating Handbook A22LS-POH-04
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5.2.4 Right wing
1. Wing and strut surface –CLEAN and INTACT.
2. Wing and strut attachment fittings and bolts –IN PLACE, INTACT and SECURE.
3. Wing fuel tank cap –IN PLACE and SECURE.
4. Fuel leaks –NONE.
5. Fuel tank vent outlet –CLEAN and INTACT.
6. Wing tip and navigation/strobe light –INTACT.
7. Flaperon clamp –REMOVED.
8. Flaperon –CLEAN and INTACT.
9. Flaperon hinge brackets –INTACT, BOLTS SECURE, HINGES GREASED.
10.Flaperon control linkage attachment –INTACT and SECURE.
5.2.5 Right side of fuselage
1. Fuselage surface –CLEAN and INTACT.
2. Cockpit glass –CLEAN, INTACT and NO CRACKS.
3. Door hinges and lock –INTACT.
4. Recovery system condition –CHECK visually.
5. Drain valve –CLOSED, NO FUEL LEAKS.
6. Fuel residue –DRAIN and CHECK.
5.2.6 Empennage
1. Empennage surface –CLEAN and INTACT.
2. Clamps/stops –REMOVED.
3. Horizontal stabilizer attachment fittings and bolts –INTACT and SECURE.
4. Rudder, elevator and trim tab –CLEAN and INTACT.
5. Rudder, elevator and trim tab hinge brackets –INTACT, SECURE and GREASED.
6. Rudder, elevator and trim tab control linkage attachment –INTACT and SECURE.
5.2.7 Left side of fuselage
1. Fuselage surface –CLEAN and INTACT.
2. Cockpit glass –CLEAN, INTACT and NO CRACKS.
3. Door hinges and lock –INTACT.
4. Battery and power cables' attachment –SECURE, CONDITION OK.
5. Control system linkages inside the rear fuselage –CHECK visually.
6. Baggage container condition –CHECK visually.
5.2.8 Left wing
1. Flaperon control linkage attachment –INTACT and SECURE.
2. Flaperon hinge brackets –INTACT, BOLTS SECURE, HINGES GREASED.
3. Flaperon –CLEAN and INTACT.

AEROPRAKT-22LS Pilot Operating Handbook A22LS-POH-04
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4. Flaperon clamp –REMOVED.
5. Fuel tank vent outlet –CLEAN and INTACT.
6. Fuel leaks –NONE.
7. Wing fuel tank cap –IN PLACE and SECURE.
8. Wing tip and navigation/strobe light –INTACT.
9. Wing and strut attachment fittings and bolts –IN PLACE, INTACT and SECURE.
10.Wing and strut surface –CLEAN and INTACT.
11.Pitot/static pressure probe –COVER REMOVED, CLEAN and INTACT.
5.2.9 Cockpit
1. Cockpit interior –CLEAN, INTACT, NO FOREIGN OBJECTS.
2. Seats –INTACT, ADJUSTED and SECURE.
3. Harness belts –INTACT, ADJUSTED and LOCKED (with pilots in the seats).
4. Doors –CLOSED and LOCKED.
5. Flight planning including weight and CG check –PERFORMED.
6. Onboard documentation/maps required for the flight –AVAILABLE.
7. Baggage container –BAGGAGE SECURED, CONTAINER CLOSED.
8. Starter key –REMOVED
9. All electrical switches –OFF.
10.Flight instruments –INTACT, CHECK READINGS.
11.Movements of controls –check FREE and FULL.
12.Yokes, rudder pedals, elevator trim tab lever –NEUTRAL.
13.Flaps –RETRACTED.
14.Parking brake –ON.
5.3 Engine starting
1. Doors –check CLOSED.
2. Propeller –CHECK CLEAR.
3. Throttle –APPROX. 50-55% OF THROTTLE LEVER TRAVEL.
4. Battery switch (under left seat) –ON.
5. Master switch –ON.
6. Fuel level –CHECK.
7. Fuel shutoff valves –one OPEN, the other CLOSED.
8. Strobes –ON.
9. Fuel pump 1 –ON.
10. Fuel pump 2 –OFF.
11. Lane А –ON.
12. Lane B –ON.

AEROPRAKT-22LS Pilot Operating Handbook A22LS-POH-04
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13. Start POWER switch –UP (ON) and HOLD.
14. Fuel pressure –min. 2.7 bar.
15. Warning lights A and B –weight till OFF.
16. START button –PRESS for a maximum of 10 seconds only (without interruption),
followed by a cooling period of 2 minutes.
17. START button, Start POWER switch –RELEASE.
18. REDUSE THROTTLE AS REQUIRED:
Cold engine
Warm engine
a) Throttle –2000 RPM 2 minutes.
b) CHECK Oil pressure above 3 bar.
c) Throttle –2500…2600 RPM.
d) Battery charge –check ON.
e) Throttle –2500 RPM till oil temp. 50°C.
f) Throttle –IDLE.
a) Throttle –IDLE
b) CHECK Oil pressure above 3
bar.
c) Throttle –2500…2600 RPM.
d) Battery charge –check ON.
e) Throttle –IDLE.
19. Engine instruments –CHECK READINGS:
a) oil temperature: MIN 50°C;
b) oil pressure: 2.0…5.0 bar over 3500 rpm,
MIN 0.8 bar below 3500 rpm,
MAX 7.0 bar;
c) Coolant temperature: MIN 60°C;
d) Engine RPM –MIN 1400;
e) Fuel pressure –2.8…3.3 bar.
20. Throttle –4000 RPM.
21. Lane A and B –CHECK MAX 180 RPM DROP.
22. Throttle –2500 RPM
23. Fuel pump 2 –ON, Fuel pump 1 –OFF.
24. Fuel pressure –2.8…3.3 bar.
25. Fuel pump 1 –ON, Fuel pump 2 –ON.
26. Fuel pressure –2.8…3.3 bar.
27. Throttle –IDLE.
5.4 Taxiing
1. Throttle –IDLE.
2. Parking brake –OFF.
3. Coolant and oil temperature –CHECK
4. Taxiway –CHECK CLEAR.
5. Throttle –SET REQUIRED TAXI SPEED.
6. Yoke –elevator NEUTRAL, ailerons AGAINST crosswind.
7. Brakes –use as required, set throttle to IDLE when stopping.
8. To stop immediately –IGNITION OFF and ENGAGE BRAKES.

AEROPRAKT-22LS Pilot Operating Handbook A22LS-POH-04
17
5.5 Before takeoff
1. Hold position –OCCUPY.
2. Brakes –ENGAGE.
3. Coolant temperature –CHECK minimum 60°C (140°F).
4. Oil temperature –CHECK minimum 50°C (122°F).
5. CHECK both fuel pumps —ON.
6. Fuel level –CHECK.
7. Fuel valves –CHECK.
8. Flaps –EXTEND position 1. Wind stronger 8 m/s (16 kts) –FLAPS UP.
5.6 Normal takeoff
1. Hold position –OCCUPY.
2. Rudder pedals –NEUTRAL.
3. Brakes –RELEASE.
4. Throttle –gradually FULL POWER.
5. Yoke –elevator NEUTRAL, ailerons AGAINST CROSSWIND.
6. Rudder pedals –maintain takeoff direction.
7. Yoke –PULL gently to lift the nose wheel at 40 km/h (25 mph, 22 kts).
8. Liftoff –at 80 km/h.
9. Accelerate to at least 100 km/h (62 mph, 54 kts) at 1-2 m (3-7 ft.) and start to climb.
5.7 Short/soft field takeoff
1. Flaps –EXTEND FULLY.
2. Hold position –OCCUPY.
3. Takeoff distance –CHECK if sufficient.
4. Rudder pedals –NEUTRAL.
5. Throttle –gradually FULL POWER.
6. Brakes –RELEASE.
7. Yoke –elevator NEUTRAL, ailerons AGAINST CROSSWIND.
8. Rudder pedals –maintain takeoff direction.
9. Yoke –PULL gently to lift the nose wheel at 40 km/h (25 mph, 22 kts).
10.Liftoff –at 65 km/h (40 mph, 35 kts).
11.Accelerate to at least 90 km/h (56 mph, 49 kts) at 1-2 m (3-7 ft.) and start to climb.
12.Speed –SET best angle of climb speed VX= 90 km/h (56 mph, 49 kts).

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5.8 Climb
1. Speed –SET: best angle of climb speed VX= 90 km/h (56 mph, 49 kts) or
best rate of climb speed VY= 100 km/h (62 mph, 54 kts)
in strong turbulence +10 km/h (6 mph, 5 kts).
2. Flaps –RETRACT SLOWLY at safe altitude.
3. EGT –max. 850°C (1562°F).
4. CHT –max. 135°C (275°F).
5. Oil pressure –max. 5.0 bar (73 psi).
5.9 Cruise
1. Flight altitude –OCCUPY and monitor, in strong turbulence –at least 100 m (300 ft.).
2. Cruise speed –SET, in strong turbulence –minimum 100 km/h (62 mph, 54 kts),
maximum 168 km/h (104 mph, 90 kts).
3. Elevator trim tab –ADJUST as required.
4. Fuel level –MONITOR.
5. Fuel valves –check OPEN for fuel tank with fuel, CLOSE empty fuel tank.
6. Turns –perform with caution in strong turbulence and at low altitudes.
5.10Approach
1. Speed –REDUCE below 148 km/h (92 mph, 80 kts), minimum 100 km/h (62 mph,
54 kts).
2. Flaps –EXTEND position 1. Wind stronger 8 m/s (16 kts) –FLAPS UP.
3. Elevator trim tab –ADJUST as required.
4. Approach speed on final –100 km/h (62 mph, 54 kts), +10 km/h (6 mph, 5 kts) in rain or
strong turbulence.
5. Too high on final –REDUCE RPM, at idle –SLIP.
6. Too low on final –INCREASE RPM. DO NOT RETRACT FLAPS when flying low over
high obstacles or close to the ground!
5.11Normal landing
1. Direction –ALIGN the airplane WITH THE RUNWAY using rudder pedals.
2. Side drift –ELIMINATE by banking against the drift (crosswind, if any).
3. Flare –start at 3 m (15 ft.), level off at approximately 0.3 m (1 ft.).
Gradually reduce bank and side drift while flaring and leveling off.
4. Throttle –IDLE.
5. Touchdown –at minimum speed. Avoid touching ground with the tail.
6. Yoke –HOLD to reduce the speed and PUSH gently to lower the nose wheel slowly.
7. Flaps –RETRACT.
8. Brakes –ENGAGE as required. Avoid braking at a high speed or nose wheel up!

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5.12 Short/soft field landing
1. Flaps –EXTEND FULLY.
2. Approach distance –REDUCE by side slipping when clear of obstacles.
3. Approach speed on final –90 km/h (56 mph, 49 kts), +10 km/h (6 mph, 5 kts) in rain or
strong turbulence.
4. Direction –ALIGN the airplane WITH THE RUNWAY using rudder pedals.
5. Side drift –ELIMINATE by banking against the drift (crosswind, if any).
6. Flare –start at 3 m (15 ft.), level off at approximately 0.3 m (1 ft.).
Gradually reduce bank and side drift while flaring and leveling off.
7. Throttle –IDLE.
8. Touchdown –at minimum speed at the beginning of the runway.
Avoid touching ground with the tail.
9. Flaps –RETRACT.
10.Yoke –HOLD to reduce the speed and PUSH gently to lower the nose wheel slowly.
11. Brakes –soft field: DO NOT USE;
short field –ENGAGE as required.
Avoid braking at a high speed or nose wheel up!
5.13 Balked landing
1. Throttle –gradually FULL POWER.
2. Descent –DISCONTINUE.
3. Speed –accelerate to at least 100 km/h (62 mph, 54 kts) flying level.
4. Climb –at 100 km/h (62 mph, 54 kts).
5. Flaps –RETRACT SLOWLY at safe altitude.

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6 Performance
6.1 General
This section contains performance data of A-22LS airplane of standard (basic)
configuration at maximum takeoff weight in the following environmental conditions: ICAO
standard atmosphere (ISA), mean sea level (MSL), no wind, hard and even runway. Those
data may vary depending upon the configuration and technical condition of a particular
aircraft and actual environmental conditions of its operation.
6.2 Takeoff and landing distances
The minimum takeoff and landing distances of A-22LS for the above conditions are
specified below. However pilots should always keep in mind that actual takeoff and landing
distances depend on condition of the aircraft, environment and pilot skill.
Takeoff/Landing run............................................. 100 m (328 ft.)
Takeoff/Landing distance to/from 15 m (50 ft.) .... 243 m (797 ft.)
6.3 Climb performance
The rate of climb depends on atmospheric conditions, airplane takeoff weight and flap
setting. The climb performance data of A-22LS in ISA conditions at MSL, maximum takeoff
weight are specified below:
Best angle of climb speed VX............... 90 km/h (56 mph, 49 kts)
Best rate of climb speed VY............... 100 km/h (62 mph, 54 kts)
Maximum rate of climb at VX............................3.3 m/s (650 fpm)
Maximum rate of climb at VY............................3.5 m/s (690 fpm)
6.4 Cruise speeds and fuel consumption at various RPM settings
The cruise speeds and fuel consumption depend upon a multitude of factors: propeller
pitch and engine adjustments, fuel quality, atmospheric conditions, flight altitude, aircraft
loading and condition of its outer surface, etc.
With the KievProp three-blade propeller adjusted to take-off RPM of 5100 per minute and
standard condition of atmosphere and aircraft the following cruise speeds and fuel
consumption values may be used for flight planning:
RPM
Cruise speed, IAS
Fuel consumption, US gal/h
4000
110 km/h (68 mph, 59 kts)
10 l/h (2.6 US gal/h)
4600
148 km/h (92 mph, 80 kts)
15 l/h (3.9 US gal/h)
5000
161 km/h (100 mph, 87kts)
19 l/h (5.0 US gal/h)
5400
180 km/h (112 mph, 97 kts)
25 l/h (6.6 US gal/h)
However these values should be considered as approximate as they may vary due to
effect of the above mentioned factors. It is recommended to verify those values for the
particular conditions in which the exact values are required.