
MD 500
(Models 369HE/HS/HM
)
ROTORCRAFT FLIGHT MANUAL
CSP
−
HE/HS
−
1
Optional Equipment
Automatic Engine Reignition
FAA Approved
Revision 6
9
−
55
e
Yawing of the helicopter may or may not follow an engine flameout and
reignition sequence. The magnitude of the yaw will depend on forward
speed and power being used. Reignition has been satisfactorily demon-
strated at idle power, in autorotation, and takeoff power in a climb.
LATER, UNMODIFIED SYSTEM (250−C18 or C20):
Before engine start:
e
Electrical power and key switch ON.
e
PNL LT and ENG OUT circuit breakers IN.
e
Place arming switch in the ARM position. ARMED light and RE−IGN
indicators illuminate.
e
Press RE−IGN light; light should go out. Press again; RE−IGN light
stays out and ARMED light stays on.
e
Set arming switch to OFF.
Engine run−up:
e
Set N
2
above 98
±
1 percent.
e
Move arming switch to ARM. Green ARMED light should illuminate and
RE−IGN indicator should be out.
e
Reduce RPM to below 98 percent. The RE−IGN light should illuminate
indicating that the ignition igniter has been energized.
e
If it is desired to extinguish the RE−IGN light, press and release RE−
IGN light. Light should go out.
e
If continued operation of the system is not desired, disarm the system.
Arm the system any time falling or blowing snow is encountered.
Each time that the engine failure low/rotor rpm warning system is activated
(main rotor speeds below 98 percent N
2
or N
1
below 55 percent) the RE−IGN
indicator light will illuminate, indicating that the ignition igniter has been en-
ergized.
NOTE
: RE
−
IGN
indicator light will stay on until manually reset. The reignition system will
continue to function normally whether reset or not.
If the N
R
or N
1
tach generator fails, the
RE
−
IGN
indicator will light and the igniter
will be energized until the engine is shut down or the reignition system is
disarmed (
ENG OUT
circuit breaker pulled).
Failure or deactivation of the engine failure/low rotor rpm warning system,
renders the reignition system inoperative. Under certain failure conditions, the
ARMED light may stay on.
Содержание MILVIZ MD530F
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