Airplane Manual FK 9 ELA
FK Lightplanes
Revision 4
Limitations
page 2-5
Spinning any aircraft which is not certified for this maneuver is extremely
dangerous! The onset of a stall is indicated to the pilot by many factors like
IAS, stick pressure, horizon level. Stalls can also be result from abrupt
control deflections / changes in angle of attack!
In strong turbulence the airspeed must be reduced below V
A
(151 km/h).
When flying off grass strips with long grass, the wheel pants must be
removed to avoid damage.
When flying with doors removed, maximum speed is 100 km/h. Flight with
door open is prohibited.
Maneuvers with zero or negative load factors must be avoided under all
conditions. These maneuvers may cause a fire due to fuel spill when using
ROTAX engines with carburetors.
2.9.
Flight Load Factors
positive
negative
Maximum load factor at V
A
+ 4g
- 2g
Maximum load factor at V
NE
+ 4g
- 1,5g
Maximum load factor with flaps down
+ 2g
0g
2.10.
Kind of Operation
The FK 9 is approved as Ultralight aircraft for VFR day (Nfl 1-96/82).
2.11.
Fuel / Oil / Coolant
Engine operating manual is the governing one!
Tank
Version fuselage tank: Capacity 60 Ltr; 1 Ltr not useable
optional wingtanks 2 x 20 Ltr, 2 Ltr each tank not useable
Version wing tank: 2 x 38 Ltr; 1,5 Ltr each tank not useable
(max 15 Ltr difference between left/right tank)
Fuel
Compare engine limitations
Unleaded fuel without bioethanol recommended,
mandatory
for M160 (smart)
AVGAS should only be used if MOGAS is not available or in
case of problems caused by vapour locks
Oil
Compare engine limitations
synthetic oils preferred;
do not use aircraft oil !
Oil capacity
Compare engine limitations
Coolant
Compare engine limitations
2.12.
Passenger Seating
The aircraft has 2 seats. It can be flown from either seat.
