Engine Run Flashcards
Oil Pressure Operating Range
11-90 PSI
Oil Pressure at Idle
13-35 PSI
Two conditions where the Low Oil Pressure Light illuminates
When oil pressure reaches 11 PSI and if the scavenge oil filter becomes clogged
Oil Temperature Continuous Operation
up to 160 C
Shut down if oil temp goes above
175 C
Oil temp must be above what before going to TRT
greater than 5 C
Fuel Flow must be between _____ and ____ prior to applying throttle
300-680 PPH
Fuel flow must be between ____ and ____ at Idle operation
400-800 PPH
What is the first indication of a possible HOT START?
> 680 PPH before light off
How many seconds elapses before EGT indication after advancing throttle to start
10 seconds Max after advancing throttle to start – 2-3 seconds is normal
What should EGT be at the Cross check of 40% N2?
EGT should be below 600 C
EGT at Start?
725 C
EGT during ground and flight idle?
725 C
EGT at Max Continuous Operation?
870 C – limited to 5 minutes above 870 C
EGT above Idle?
905 C maximum
When does the amber caution light illuminate on the EGT gauge?
at 870 C
Starter Duty Cycles for starting engines?
90 seconds on, 60 off, 90 on, 60 off, 90 on 10 min OFF
Starter Duty Cycles for motoring engines?
5 minutes on, 10 off, 5 on, 30 minutes OFF
N1 RPM at Ground Idle?
16-22%
EGT at Ground Idle?
725 C
N2 RPM at Ground Idle?
54-62 %
Fuel Flow at Ground Idle?
400-800 PPH
Oil Pressure at Ground Idle?
13-35 PSI
Oil Temp at Ground Idle?
less than 160 C
Left and Right Hydraulic Pressure at Ground Idle?
2850-3200 PSI
What 4 items are shut off when the T-Handles are pulled and what 2 items are armed?
1) Bleed Air
2) Hydraulics
3) Fuel
4) Electric
1) Arm squibs
2) Fire Indication
How much fuel is required to operate 1 engine to ground idle?
15,000 pounds
How much fuel is required to operate 4 engines to 75% N2?
40,000 pounds
How much fuel is required to operate 2 engines to TRT?
60,000 pounds
How much fuel is required in the #2 Main Tank to operate the APU?
2,000 pounds
What does the Red Disc located on the #2&3 engine struts mean if it has popped?
Thermal discharge into Air
What does the Yellow Disc located on the #2&3 engine struts mean if it has popped?
Fire discharge into Engine
What characterizes a HUNG START?
1) High EGT
2) Abnormally slow acceleration
3) RPM stabilizes below ground idle
What characterizes a FALSE START?
EGT rises with no RPM rise
What characterizes a HOT START?
1) EGT exceeds 725 C
2) Fuel flow >680 PPH
What characterizes a NO START?
EGT does not rise
What characterizes a SUB IDLE START STALL?
1) N2 rolls back
2) EGT rises,
3) Fuel flow is NOT an indicator
What should you do if the starter light fails to go out within 10 seconds and N2 is above 45%?
Place Throttles to CUTOUT and Bleed Air Valve to CLOSE
What should you do if you have an IDG failure light?
Shut Down affected engine
What happens if you shut the hydraulic pressure and auxillary pumps off prior to N2 reaching 0%?
The hydraulic reservoirs will overflow
What happens if you shut off the fuel boost pumps prior to N2 reaching 0%?
the N2 core will cavitate
Engine Danger areas at Idle thrust?
25 feet forward of engine inlet
5 feet to either side of engine inlet
180 feet aft of engine exhaust
Engine Danger areas at TRT thrust?
50 feet forward of engine inlet
6 feet on either side of engine inlet
900 feet of engine exhaust
Firefighting chemicals should not be directed into the engine air inlet or tailpipe unless
fire is restricted to those areas and is of serious proporitions
What should you do before pulling the fire switch and why?
Always place throttles to CUT-OFF. Pulling fire switch first could damage the engine fuel pump
Outboard engine run above idle, the corresponding engine on the opposite wing at a thrust setting
that approximates within 5% N1 rpm
When running an inboard engine above 40% N1 rpm, maintain balanced thrust by operating the corresponding engine on the opposite wing at a thrust setting
that approximates within 5% N1 rpm
During icing conditions, prior to exceeding 70% N1 if engine has operated at idle for more than 10 minutes, accelerate engine to
35% N1 to shed initial ice and check for unusual vibration or noise then accelerate slowly to 70%N1 and hold for 15 seconds to shed remainder of ice
Do not re-engage pneumatic starter above what?
25% N2. Re-engagement above this speed may result in starter damage
A stall is indicate by
abornmal engine noises, loud reports accompanied by flame from the engine exhaust and possible from engine inlet, fluctuating performance parameters, sluggish or no throttle response.
How long can you use the ignition system?
designed for unlimited use.
Combustion occurs withing _____ after throttle lever is advanced to START
10 seconds (normal combustion 2-3 seconds)
Pneumatic starter initiates automatic cutout between ___ and ___ N2 and takes ___ to ___ seconds to complete cutout sequence
43% and 45%
3 to 9 seconds
How much oil pressure before placing throttle lever to IDLE
11 psi
Normal Takeoff thrust setting Max N1 and Max N2
Max N1 is 102% and Max N2 is 105%
Max EGT for normal take off settings is
905 C
Max Continuous Power setting Max N1 and Max N2 is
102% N1 and 105% N2
Max EGT for continuous power and below is
870 C
Why do you place the GEN BREAKER switches to CLOSE and then TRIP?
To prevent the generators from automatically coming on line after engine start
When defueling or transferring fuel the Navigation lights need to be positioned in
STEADY
Fuel consumption must be monitored during engine run to ensure CG does not shift
AFT of 35 percent MAC
Operate Engine anti-ice switch
5 minutes if temp is 32-0 F with 50% or more humidity
10 minutes for temps below 0F
Light off will normally occur withing
2 or 3 seconds after placing throttle lever to STARTposition
Max motor speed is defined as
less than 1% increase in N2 rpm in 5 seconds
