Engine Limitations & associated malfunctinos/EP Flashcards
(23 cards)
When should the engine be manually aborted?
a. ITT increasing & likely to exceed 1,000°C (hot)
b. Normal N1 increase is halted (hung)
c. No rise of ITT is evident within 10 seconds (no start)
d. BAT BUS annunciator illuminates during start sequence
e. ST READY annunciator extinguishes
Can you attempt a restart if an external power engine start was attempted?
NO
When does Emergency Engine Shutdown on the Ground boldface apply?
Engine fire, prop strike, chip light, likely to depart prepared surface, FF >800, any other serious emergency
After a stop that involved max braking, should you set the parking brake?
No
N1 does not indicate speeds below _____. It will indicate 0%.
8%
What annunciators will illuminate with an engine failure in flight?
GEN, FUEL PX, OIL PX, OBOGS FAIL
What is the zoom capability at 200 knots? 250 knots?
600’ to 900’ ft; 1170’ to 1550’ ft
How much additional altitude will the zoom to EJECT attain?
200’
How long and how much altitude approx. will you lose for an immediate airstart?
40 seconds, 1,200’ ft @ 125 KIAS
What is the airstart envelope?
125-200 KIAS for sea level-15,000’ft
135-200 KIAS for 15,001’ft-20,000’ft
Movement of the PCL above IDL before N1 stabilizes at approx. ___% will cause an increase in fuel flow, which may cause engine failure.
67%
If the start switch is left in MANUAL, it will drain the battery in ___ minutes.
10 minutes
True/False: The propeller will unfeather and accelerate to operating RPM approximately 20 seconds after N1 reaches 45%.
TRUE
1Opening the PROP SYS circuit breaker will remove power from the feather dump solenoid and allow oil pressure to return, which brings the prop out of fully feather state in ___ to ____ seconds
15 to 20 seconds
What are indications of a prop feather?
High torque, prop noise, loss of thrust, engine vibrations
What are indications of a prop sleeve touchdown? What annunciators normally occurs?
Fluctuations in Np, torque increasing, thrust decreasing, engine vibrations
b. CHIP light
If the PMU SWITCH is placed OFF, what happens to ground idle N1?
It will not be available, expect 67% N1
With constant torque & airspeed, when is RPM considered stable below 40% Np?
3 seconds
At 125 KIAS, 4-6% torque, what should your rate of descent be?
1350-1500 fpm
With the PROP SYS circuit breaker pulled & PMU SWITCH OFF, what happens to the feather dump solenoid?
It will not be powered & the prop will feather at a very slow rate
What check is initiated if a suspected fire occurs in flight?
FEVER
Will OBOGS be operable with battery failure?
No, it is tied to the Hot battery bus
When is the OBOGS TEMP annunciator illuminated?
Exceeds 200°F
