Ranges and Limits

Question 1

Engine Starter Duty Cycle

Answer 1

5 minutes on; 2 minutes off
5 minutes on; 2 minutes off
5 minutes on; 10 minutes off

Question 2

Starter Inlet air pressure

Answer 2

25 PSI minimum after starter valve is open and pressure has stabilized on manifold gage

Question 3

Time to light-off

Answer 3

20 seconds after N2 reaches 15%

Question 4

Starting time, EGT increase (light off) to idle

Answer 4

2 minutes maximum

Question 5

Starting Oil pressure

Answer 5

positive indication

Question 6

Idle oil pressure

Answer 6

10 PSID minimum

Question 7

80% N2 oil pressure

Answer 7

22 - 52 PSID

Question 8

Oil pressure at takeoff power setting

Answer 8

29 - 80 PSID

Question 9

Normal Oil consumption

Answer 9

0.28 qt/hr

Question 10

Scavenge oil temperature at normal operation

Answer 10

-50 degrees C to 160 degrees C

Question 11

Maximum oil consumption

Answer 11

0.56 qt/hr

Question 12

Scavenge oil temperature after 15 minutes

Answer 12

160 degrees C to 175 degrees C (shutdown engine)

Question 13

Maximum scavenge oil temperature

Answer 13

175 degrees C (shutdown engine)

Question 14

Hydraulic pump pressure at normal operation

Answer 14

3000 (+/- 150) PSIG

Question 15

Maximum hydraulic pump pressure

Answer 15

3150 PSIG

Question 16

Maximum time at temperature, takeoff power

Answer 16

5 min

Question 17

Engine speed, core and fan at idle

Answer 17

N1 - 21% to 26% rpm

N2 - 59% to 67% rpm

Question 18

Engine speed, core and fan at normal operation

Answer 18

N1 - 21% to 117.5% rpm

N2 - 59% to 112.5% rpm

Question 19

Starting EGT

Answer 19

750 degrees C

Question 20

Transient EGT (except starting)

Answer 20

960 degrees C

Question 21

Maximum reverse EGT

Answer 21

960 degrees C

Question 22

Acceleration time from idle to takeoff power

Answer 22

12 seconds maximum

Question 23

Engine temperature normalization time

Answer 23

3 minutes at idle after starting and before shutdown

Question 24

DC loadmeter at normal operation

Answer 24

0 to 1.0

Question 25

DC loadmeter caution

Answer 25

1.0 to 1.5

Question 26

DC loadmeter maximum

Answer 26

1.5

Question 27

DC voltmeter minimum

Answer 27

22.5v

Question 28

DC voltmeter caution

Answer 28

22.5v to 25v

Question 29

DC voltmeter at normal operation

Answer 29

25v to 30v

Question 30

DC voltmeter maximum

Answer 30

35v

Question 31

AC loadmeter (1.0=90 KVA) at normal operation

Answer 31

0 to 1.0

Question 32

AC loadmeter (1.0=90 KVA) caution

Answer 32

1.0 to 1.25

Question 33

AC loadmeter (1.0=90 KVA) maximum

Answer 33

1.25 to 1.5

Question 34

RTRU 1 and RTRU 2 voltage range

Answer 34

28 (+/- 3) DC volts

Question 35

Multi-engine operation, common throttle alignment

Answer 35

Within 1/2 knob