HP d212 Manual do Utilizador descarregar pdf (Página 84)

FMS-D212-725-1

Page 3-8

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

maintaining cyclic approximately centered

8. Complete helicopter shutdown.

3.3.4 Engine Underspeed

An engine underspeed is caused by a malfunctioning N

governor. At low

altitude/low airspeed, the malfunction must be treated as an engine failure

because of insufficient time and altitude to regain normal engine rpm with

MANUAL governor control.

Indications:

1. ROTOR RPM caution light and audio on

2. ENGINE RPM warning light on.

3. Low N

, EGT/MGT and engine torque

Procedure:

WARNING

IF CORRECTIVE ACTION IS NOT INITIATED

IMMEDIATELY, ROTOR RPM COULD DECAY

EXCESSIVELY.

Note

Because automatic acceleration, deceleration and

overspeed controls are not provided with the GOV

switch in the MANUAL position, throttle and collective

movements must be smooth to prevent overspeed, over-

temperature or engine failure.

If an underspeed is experienced and altitude permits, proceed as follows:

1. Collective – Establish autorotative descent

Adjust to maintain proper N

2. Throttle – Engine IDLE.

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HP d212 Manual do Utilizador Página 84