CSP-520N-1
MD 520N (500N) ROTORCRAFT FLIGHT MANUAL
Normal Procedures
R
Original
4-18
FAA Approved
:
ENGINE BLEED AIR SYSTEMS CHECKS
F
CABIN HEAT (if installed) − ON − Observe 30−40
°
C
increase in TOT, then OFF.
CHECK TOT
INCREASE/
DECREASE
F
Engine ANTI−ICE ON − Observe increase 10−20
°
C in TOT,
then OFF.
CHECK TOT
INCREASE/
DECREASE
F
SCAV−AIR Switch ON (if installed) observe slight rise in
TOT (about 5
°
C).
CHECK TOT
INCREASE AND SET
SWITCH AS DESIRED
NOTE
:
If no increase in TOT is observed, operation of the scavenge air system may be
checked by verifying that the flapper door (scavenge air outlet) is open.
:
THROTTLE RIGGING CHECK
NOTE
:
If the flight will involve rolling the twistgrip to the ground idle position while
airborne (Autorotation training, maintenance test flight, etc.) this check must be
performed even thought it may not be the first flight of the day.
F
N
2
100%
RECHECK
F
Pilot’s twistgrip
SNAP TO IDLE
If engine flames out, do not try to recover by opening twistgrip.
Close twistgrip to CUTOFF and monitor TOT.
F
If engine flames out, refer to the HMI for proper throttle control rigging.
F
If dual controls are installed, repeat procedure using
copilot’s twistgrip.
RECHECK
F
Twistgrip
FULL OPEN
F
N
2
− 98%
RESET
CAUTION
