EP Flashcards
Indications of an engine/ JFS fire
1 engine fire warning light
2 flames.
3 smoke
4 explosions.
5 signal from ground maintenance crew
Shut down procedures for an engine/ JFS fire
1 throttle off
2 JFS switch off
3 fuel master switch off
4 engine feed switch off
5. Abandoned aircraft if fire continues
Indications of uncommanded/ auto acceleration
RPM advances above 31% or FTIT increases prior to moving throttle from off
Shut down procedures for uncommanded/ auto acceleration
1 throttle off
2 engine control SEC
3 fuel master switch off
4 engine feed switch off
Characteristics of a hot start
FTIT over 935° c
Indications to anticipate a hot start
1 FTIT increasing rapidly through 750° c while RPM less than 40%
2 rate of increase of engine RPM drops off sharply while RPM less than 40%
3 engine RPM begins to decrease following JFS cut off
Shut down procedures for a hot start/ anticipated hot start
1 Throttle off
2 monitor FTIT
3. If FTIT remains above 500° c or if another start is to be made, motor engine with JFS until FTIT is below 200° Celsius not to exceed 4 minutes, or for a minimum of 30 seconds before initiation of another start
Characteristics of a hung start
Engine RPM stops increasing below idle and FTIT stabilizes less than 935° c
Shut down procedures for a hung start
1 Throttle off
2 motor engine for 1 minute to recharge JFS accumulators
Characteristics of a no start
Engine light off does not occur within 10 seconds (15 seconds if first start attempt after maintenance has been performed on main fuel system) of throttle to idle
Shut down procedures for a no start
- Throttle off
- Motor engine for 1 minute to recharge JFS accumulators
Characteristics of a slow start
Engine start time exceeds the parameters found on table 1-2
Non-recoverable stalls are called
Stagnations
Stalls are characterized by
- Rising FTIT and decreasing RPM.
- Lack of RPM response to throttle movement
Recovery from stall or stagnation?
- Snap throttle to idle
- If stall clears stabilize for 5 minutes at idle and shut down engine