AEROPRAKT-22LS Pilot Operating Handbook
A22LS-POH-04
9
3.6 Engine
Engine data and operational limitations are given in the table below:
Engine manufacturer
BRP-Rotax GmbH & Co KG (Austria)
Engine model
Rotax-912UL
Rotax-912ULS
Engine type
Flat-four, four-stroke
Take-off performance
59.6 kW (80 h.p.)
73.5 kW (100 h.p.)
Max. continuous performance
58 kW (77.8 h.p.)
69 kW (92.5 h.p.)
Take-off speed
5800 rpm (max. 5 minutes)
Max. continuous speed
5500 rpm
Idle speed
min. 1400 rpm
Oil pressure, maximum
minimum
normal
7 bar (102 psi) (for a short period at cold start)
0,8 bar (12 psi) (below 3500 RPM)
2,0 to 5,0 bar (29-73 psi) (above 3500 RPM)
Oil temperature, maximum
minimum
normal
140 °C (285 °F)
50 °C (120 °F)
90-110 °C (190-230 °F)
130 °C (266 °F)
50 °C (120 °F)
90-110 °C (190-230 °F)
Exhaust gas temperature
max. 880 °C (1616 °F)
Coolant temperature
(coolant exit temperature)
max. 120 °C (248 °F)
Cylinder head temperature
max. 150 °C (300 °F)
max.135 °C (275 °F)
Engine start, operating
temperature
max. 50 °C (120 °F) (ambient temperature)
min. -25 °C (-13 °F) (oil temperature)
Fuel pressure, maximum
minimum
0.4 bar (5.8 psi)
0.15 bar (2.2 psi)
Fuel antiknock properties
min. RON 90 (min. AKI
1
91) min. RON 95 (min. AKI 91)
European standard of fuel
EN 228 normal, EN 228
super, EN 228 super plus
EN 228 super, EN 228
super plus
Aviation Standard of fuel
AVGAS 100 LL (ASTM D910)
Oil specification
Use only oil with Rotax norm RON 424 classification
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.
1
Anti-Knock Index (RON+MON)/2
