FLIGHT MANUAL BO 105 CB-5/CBS-5
EUROCOPTER
4 - 18
LBA APPROVED
Rev. 0
4.9.2 Deceleration Check
NOTE Perform this check after first flight of each day and for each engine separately.
Cyclic stick – Trim neutral
Collective lever lock – Engage
All electrical consumers – Off except anti-collision lights and fuel
pumps
Generator switches – Off
N
2
(BENDIX fuel controls only) – Stabilize at 100% for 15 seconds
Power lever of check engine – Snap to IDLE, start clock (stopwatch)
When N
1
of check engine passes 65%:
Clock – Stop, note time
NOTE D Minimum allowable deceleration time is 2 seconds. If deceleration time is less
than 2 seconds, perform two more checks to confirm time.
D Maintenance action is required when:
- confirmed deceleration time is less than 2 sec,
-N
1
drops below 59%,
- flameout is experienced.
Power lever of check engine – FLIGHT
Remaining engine – Perform deceleration check
Both power levers – IDLE
Cyclic stick lock (if fitted) – Engage
After 2 min:
Power levers – OFF
CAUTION
IF TOT DOES NOT DECREASE WITH N
1
, CLOSE EMERG FUEL VALVE AND,
WHILE HOLDING POWER LEVER OFF, VENTILATE AFFECTED ENGINE UNTIL
TOT SUBSTANTIALLY DECREASES. MAINTENANCE ACTION IS REQUIRED BE-
FORE NEXT START.
TOT and N1 – Monitor decreasing
Fuel pumps (4) – Off
OIL COOL warning light (if installed) – Check on below 20% N
Ro
Circuit breakers – As required
All switches – Off
Engine compressor rinse – Perform as required
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