HP d212 Manual do Utilizador Página 94

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FMS-D212-725-1
Page 3-18
• COPYRIGHT © 2007 BY DART AEROSPACE LTD •
This document is private and confidential and is supplied on the express condition that it is not to be used for any
purpose or copied or communicated to any other person without written permission from Dart Aerospace Ltd.
Revision:
D
TC Approved Date: 08.12.17
3.5.5 Fixed Pitch Failure in Flight
If tail rotor fixed pitch failure occurs during climb (left pedal applied), cruise
(approximately neutral pedals), and descent (right pedal applied), a descent
and landing can be effected safely by use of power and throttle changes.
Procedures:
If helicopter is in a trimmed condition when malfunction is discovered, engine
power and airspeed should be noted and the helicopter flown to a suitable
landing area.
Combinations of ENG TORQUE, ROTOR RPM (N
R
), and AIRSPEED will
correct or aggravate yaw attitude and these should be adjusted as required
to control yaw during landing.
Right Pedal Locked Forward of Neutral:
Power should be reduced and ENG RPM (N
2
) maintained within green arc.
This will help streamline helicopter in flight. Right turns are easier than left
turns. AIRSPEED should be maintained at or above 60 KIAS.
Execute a normal to steep approach adjusting power as necessary to
minimize or prevent right yaw. Maintain ENG RPM (N
2
) and an AIRSPEED
of 60 KIAS during initial part of approach.
At 60 to 75 feet AGL and when landing area can be made, start a slow
deceleration to arrive at intended landing point with AIRSPEED at about 25
KIAS.
At 2 to 5 feet AGL, slowly reduce throttle to overcome yaw effect and allow
helicopter to settle. When aligned with landing area, allow helicopter to
touchdown.
After ground contact, use collective and throttle as necessary to maintain
alignment with landing strip, and to minimize forward speed. If helicopter
starts to turn, move cyclic as necessary to follow turn until helicopter comes
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