Eads Eurocopter BO 105 CBS-5 - Tail Rotor Drive Failure - Flight

FLIGHT MANUAL BO 105 CB-5/CBS-5
3 - 41
LBA APPROVED
Rev. 4
TAIL ROTOR FAILURE CONDITIONS
3.5.2 Tail Rotor Drive Failure - Flight
Conditions/Indications
Complete loss of tail rotor thrust which may be caused by a severed drive shaft and/or sep-
eration of the tail rotor assembly from the helicopter.
– Rapid right yawing motion eventually combined with a right roll and downward pitch.
Procedure
WARNING EXTENDED FLIGHT IS NOT POSSIBLE AFTER TAIL ROTOR DRIVE SYS-
TEM FAILURE. AUTOROTATION MUST BE ENTERED IMMEDIATLY.
1. Collective lever – Full down immediately, maintain N
RO
within limits
2. Airspeed – 75 KIAS recommended
NOTE Airspeed indication may be unreliable due to right yaw flight condition.
3. Double engine emergency shut-
down
– Perform
WARNING LANDING WITHOUT THE TAIL ROTOR OPERATING IS HAZARDOUS AS
THE HELICOPTER WILL TOUCH DOWN IN AN EXTREME YAW ATTITUDE
AND PROBABLY ROLL OVER.
4. Modified side flare – As necessary to obtain zero
groundspeed upon touchdown
NOTE The rate of descent will be higher than normal due to the extreme yaw attitude and
will require a modified side flare to reduce the groundspeed to as near zero as pos-
sible to prevent the helicopter from rolling over upon touchdown.
5. Collective lever – Raise to stop descent and cushion
landing