CSP
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902RFM207E
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1
ROTORCRAFT FLIGHT MANUAL
MD900 (902 Configuration with PW 207E)
Emergency and
Malfunction Procedures
FAA Approved
Reissue 2
Original
3
−
20
Wind speed and direction at the landing site can be beneficial if optimized
for the particular type of anti-torque malfunction. Head winds reduce ground
speed and/or power required at touchdown. Left crosswind components can
help weathervane the aircraft against the yaw tendency caused by the particu
lar malfunction.
With a fixed collective position, controlling RPM with the twist grips will change
power (torque) and induce a yaw. If needed, it is recommended that controlling
RPM with twist grips be used only to reduce RPM just prior to or at the moment
of touchdown.
NOTE
:
This action will place both engines in the manual mode.
ANTI-TORQUE FAILURE - COMPLETE LOSS OF THRUST
This involves a break in the fan drive system (e.g., a broken drive shaft) that causes
the fan to stop turning resulting in a complete loss of fan thrust. Directional control
becomes dependent on airspeed and power setting.
Conditions:
While in hovering flight
Indications:
Inability to “trim” helicopter with pedals; may also be accompanied by
noise or vibration.
Procedures:
If altitude permits, a positive reduction of collective pitch may result in a
stopping or slowing of the “uncommanded turn to the right”.
If “uncommanded turn to the right” is arrested, fly away and gain sufficient
airspeed to maintain heading control.
Proceed with procedures for complete loss of thrust in forward flight.
If unable to gain airspeed or altitude does not permit, reduce power and
altitude with collective.
As the ground is approached, rotate both twist grips simultaneously to IDLE
and perform an autorotation.
Summary of Contents for MD900 Explorer
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