HP d212 Manual de usuario Pagina 83

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FMS-D212-725-1
Page 3-7
• 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:
A
TC Approved Date: 07.06.01
3.3.3 Engine Driveshaft/Clutch Failure
WARNING
FAILURE OF MAIN DRIVESHAFT TO TRANSMISSION
WILL RESULT IN COMPLETE LOSS OF POWER TO
THE MAIN ROTOR. ALTHOUGH COCKPIT
INDICATIONS FOR A DRIVESHAFT FAILURE ARE
SIMILAR TO AN ENGINE OVERSPEED, IT IS
IMPERATIVE THAT AUTOROTATIVE FLIGHT
PROCEDURES BE ESTABLISHED IMMEDIATELY.
FAILURE TO REACT IMMEDIATELY TO ROTOR RPM
AUDIO, ROTOR RPM LIGHTS AND N
2
/N
R
TACHOMETER INDICATIONS CAN RESULT IN LOSS
OF CONTROL OF THE HELICOPTER.
Indications:
1. Left yaw
2. Rapid decrease in N
R
3. ROTOR RPM audio tone
4. Illumination of ROTOR RPM light
5. Possible increase in noise level due to driveshaft breakage and
overspeeding engine.
Procedure:
1. Collective – Establish autorotative descent.
Adjust to maintain proper N
R
2. Airspeed – Establish 65 to 85 KIAS
3. Throttle – Close
4. FUEL VALVE – OFF.
At low altitude:
5. Flare to lose airspeed
6. Apply collective as flare effectiveness decreases to further reduce
forward speed and cushion landing.
7. Upon ground contact, collective shall be reduced smoothly while
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