Engine Limitations Flashcards
Takeoff N1
100%
Takeoff N2
100.8%
Takeoff ITT
978c (5min)
Takeoff (APR operating) N1
100%
Takeoff (APR operating) N2
100.8%
Takeoff (APR operating) ITT
996c (5min)
Takeoff Transient ITT
1,006c (5sec) 1,016c (2sec)
Max Continuous N1
100%
Max Continuous N2
100.8%
Max Cont ITT
968c
Max Cruise ITT
932c
Max OVERSPEED N1
103% (5 sec)
Max OVERSPEED N2
103% (5 sec)
Starting ITT (unrestricted)
978c
Starting ITT (transient)
996c (10sec) over 996c (5sec)
Max OIL temp sea level to 30,000
127c
Max OIL temp above 30,000
140c
Max OIL Transient temp
149c (2 min)
Min oil temp
-40c
Min OIL temp for takeoff
30c
OIL pressure limit (takeoff, max cont, climb)
38-46psi
OIL pressure limit (min IDLE)
25psi
Oil Pressure Transient MAX
55psi (3min)
Oil Consumption rate
0.01 gal per hour (over 25 hours)
Engine Fuel Computer
Required for takeoff
Engine Synchronizer Switch
OFF for takeoff
Automatic Performance Reserve (APR)
MUST be armed for takeoff)
Engine Type & model
TFE-731-5BR-1H Low Bypass
Engine Thrust (both)
4660LBS Normal 4800Lbs W/APR
Accessory case Drives:
Oil pump, Hyd Pump, Fuel Pump, Alternator, Generator
HP COCK controls:
fuel valve, ignition, Hyd valve, Unlocks throttle, DEEC Idle command
OVERSPEED Protection Primary and Ultimate
Primary is 105% N2 -Mechanical Ultimate is 109%N2 electrical DEEC
Surge valve fails at? (position)
1/3 OPEN
engine oil capacity
1.65Qts
“low oil pressure” comes on at
25PSI or less
Max Engine Overpseed
103% N1
DEEC inputs
P2T2, ITT N1, N2, PLA
DEEC output
Surge Valve