AIRCRAFT OPERATING INSTRUCTIONS – VIRUS 912 S-LSA GLIDER
Page
29
8.2.3 Normal Takeof
f.
Before lining up, verify the following:
Parking brake (if applicable): disengaged (full forward). Air brakes (if applicable): retracted and
secured. Fuel valves: fully open. Fuel quantity: sufficient. Safety harnesses: fastened. Cabin
doors: closed securely Trim handle: in neutral position or slightly forward. Flap handle: 2nd
position (flap handle full up) Runway: clear - Release brakes, line up and apply full power. Verify
engine for sufficient RPM at full throttle (min 5100 RPM).
CAUTION!
Keep adding power gradually.
WARNING!
Should engine RPM not reach more than 5000 RPM when at full throttle, ABORT
TAKE-OFF IMMEDIATELY, come to a standstill and verify that the propeller is at minimum pitch
setting .
Start the takeoff roll pulling the control stick one third backward and lift the nose wheel off the
ground as you accelerate. Reaching 40-43 kts, gently pull on the stick to get the aircraft airborne.
CAUTION!
Crosswind (max 15 kts) takeoff should be performed with the control stick pointed
into the wind. Special attention should be paid to maintaining runway heading!
Initial climb
When airborne, engage brakes momentarily to prevent in-flight wheel spinning. Accelerate at
full power and later maintain proper climbing speed. As you reach 50 kts (90 km/h) at above 150
ft (50 m), set flaps to 1st stage, reaching 60 kts (110 km/h) at 300 ft (100 m) set flaps to neutral
position. Reduce RPM by 10% or below 5500 RPM and continue climbing at 70 kts (130 km/h).
Adjust the trim to neutralize the stick force if necessary. Remember to keep the temperatures
and RPM within operational limits during climb out.
CAUTION!
Reduce power and lower the nose to increase speed in order to cool the engine down
if necessary.
Should you be climbing for a cross-country flight, consider climbing at 100 kts (185 km/h) as this
will greatly increase your overall travelling speed. Reaching cruise altitude, establish horizontal
flight and set engine power to cruise (5300 RPM).
Cruise
When horizontal flight has been established, verify on-board fuel quantity again. Keep the
aircraft balanced while maintaining desired flight parameters. Should you desire to cruise at low
speed (up to 80 kts (150 km/h)), set flaps to neutral position other-wise flaps should be set to
negative position (flap handle full down).
Check engine operation and flight parameters regularly! Recommended cruise is at 5300 RPM,
with a fuel burn of 3.3 US gal per hour.
