MD Helicopters MD900 Explorer, Flight Manual

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CSP − 902RFM207E − 1
ROTORCRAFT FLIGHT MANUAL
MD900 (902 Configuration with PW 207E) Handling Servicing
and Maintenance
Revision 1
8 − 41
Reissue 2
8 − 11. SPECIAL OPERATIONAL CHECKS AND PROCEDURES
The following checks are typically utilized as part of a post maintenance run up
associated with scheduled inspections, troubleshooting or maintenance on
specific
aircraft systems. Refer to the Rotorcraft Maintenance Manual (CSP900RMM-2)
for the recommended use and frequency of the following checks.
These checks and or procedures are to be performed only while
aircraft is on the ground except where noted.
ENGINE N
P
OVERSPEED TEST PROCEDURE
NOTE
:
This procedure is to be performed with one engine at idle and the other engine
off.
Engine control switch
IDLE
Collective
INCREASE TO 20% TORQUE
OVSP test switch
MOVE TOWARD OPERATING ENGINE AND HOLD
Primary IIDS display
OBSERVE DECREASE IN TORQUE AND N
R
OVSP test switch
RELEASE
Primary IIDS display
OBSERVE INCREASE IN TORQUE AND N
R
Collective
FULL DOWN
Engine control switch
OFF
Start other engine and repeat procedure.
ENGINE OUT/LOW ROTOR WARNING CHECK
Engine control switches
FLY
Collective
INCREASE TO A CLP OF >5% FOR MORE
THAN 5 SECONDS
Collective
LOWER TO A CLP OF 0%
Engine control switches
SWITCH TO IDLE AND NOTE THE
FOLLOWING
ENG OUT warning light flashes and low rotor RPM tone is activated for one cycle. As
rotor RPM decreases through 88%, the low rotor RPM tone will reactivate until the
AOG logic disables the warning.
CAUTION