HP d212 Manual do Utilizador descarregar pdf (Página 83)

FMS-D212-725-1

Page 3-7

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:

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

TACHOMETER INDICATIONS CAN RESULT IN LOSS

OF CONTROL OF THE HELICOPTER.

Indications:

1. Left yaw

2. Rapid decrease in N

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

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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HP d212 Manual do Utilizador Página 83