MD Helicopters MILVIZ MD530F, Rotorcraft Flight Manual, Page: 76 / 326

MD 500
(Models 369HE/HS/HM
)
ROTORCRAFT FLIGHT MANUAL CSP
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HE/HS
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1
Emergency and
Malfunction Procedures
FAA Approved
Revision 6
3
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8
3
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5. LOW ROTOR SPEED
NOTE
: Early versions of the engine power out warning unit do not sense rotor rpm and
do not activate the audible and visual warning indicators.
Indications: Red
ENGINE
OUT
warning indicator ON and audible warning in headset.
Drop in rotor RPM.
Change in noise level.
NOTE
: The LOW ROTOR warning is activated when N
R
falls below approximately 460.
Conditions: Low rotor RPM will most commonly be associated with the following:
Engine Failure.
Transient rotor droop during large, rapid increases in power.
Governor failure producing an underspeed.
Procedures:
e
Respond immediately to the low rotor RPM warning by adjusting collec-
tive to maintain rotor RPM within limits.
e
Check other Caution/Warning indicators and engine instruments to con-
firm engine trouble and respond in accordance with appropriate proce-
dures in this section.
3
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6. EMERGENCY LANDING PROCEDURES
WATER LANDING
Conditions:
Power off.
Procedures:
e
Adjust collective pitch as necessary to establish autorotation.
e
If time permits, open doors and push door handle full down to prevent re-
latching.
e
Make autorotative approach, flaring as required to minimize forward
speed at touchdown.