Engine Operating Limits

Question 1

Torque - Ft Lbs

Takeoff and Max Cont
Transient

Answer 1

Takeoff and Max Cont - 2230 ft lbs

Transient - 2570 ft lbs for 05 secs

Question 2

Max Observed ITT °C

• Starting
• Low Idle
• Takeoff, Max Cont and Max Cruise
• Max Reverse
• Transient

Answer 2

Starting  - 1000 °C (limited to 05 secs)
Low Idle - 750 °C
Takeoff, Max Cont and Max Cruise - 800 °C
Max Reverse - 750 °C
Transient - 850°C for 20 seconds

Question 3

Prop RPM (N2)

Takeoff, Max Cont and Max Cruise
Max Reverse
Transient
Overspeed governor up to 2120 RPM

Answer 3

Takeoff, Max Cont and Max Cruise ……………………….. 2000 rpm
Max Reverse……………………………………………………….. 1900 rpm Transient………………………………………..2200 rpm for 5 seconds
Overspeed governor up to 2120 RPM………… 1800 ft-lb torque

Question 4

Oil Pressure

Min
Max
Transient

Answer 4

60 psi Min
135 psi Max
200 psi Transient

Question 5

Oil Temperature

Starting
Take-off and Max Cont
Transient

Answer 5

Min: (-)40°C
Take off and Max Cont: 0-99°C
Transient: 0-104°C

Question 6

External Power -

Set to ________ volts, minimum of _____ amps momentarily and _____ amps continuously

Answer 6

28.0-28.4 Volts
Min of 1000 amps momentarily
300 amps continuously

Question 7

Generator Limits

Sea Level to 31,000 feet altitude
Above 31,000 feet altitude
Ground Operation

Answer 7

Sea Level to 31,000 feet altitude ………………………………… 100%
Above 31,000 feet altitude …………………………………………. 85%
Ground Operation……………………………………………………… 85%

Question 8

Starter Limits

Answer 8

40 seconds ON, 60 seconds OFF,
40 seconds ON, 60 seconds OFF,
40 seconds ON, 30 minutes OF

Question 9

SHP - Takeoff and Max Cont?

Answer 9

850 SHP