Limitations

Question 1

Low-end TRQ limit:

Answer 1

23.9 TRQ when below 1000RPM

Question 2

Green range on TRQ:

Answer 2

0 - 36.9 TRQ

Question 3

Yellow range on TRQ:

Answer 3

36.9 - 44.34 TRQ

Question 4

Red range on TRQ:

Answer 4

44.34 TRQ, max limit 61.0 TRQ

Question 5

Takeoff TRQ & limitation:

Answer 5

44.34 TRQ, 5 minutes

Question 6

Max continuous TRQ & limitation:

Answer 6

36.95 TRQ, no time limit

Question 7

Transient TRQ & limitation:

Answer 7

61.0 TRQ, 20 seconds

Question 8

Max reverse TRQ & limitation:

Answer 8

34.25 TRQ, no time limit

Question 9

Green range on ITT:

Answer 9

400 - 760 ITT

Question 10

Yellow range on ITT:

Answer 10

760 - 800 ITT

Question 11

Red range on ITT:

Answer 11

800 ITT / 1000 ITT (startup)

Question 12

Max takeoff ITT & limitation:

Answer 12

800 ITT, limited to 5 minutes

Question 13

Max continuous ITT & limitation:

Answer 13

760 ITT, no time limit

Question 14

Minimum idle ITT & limitation:

Answer 14

750 ITT (applies between 50.7% and 61.4% NG)

Question 15

Max starting ITT & limitation:

Answer 15

1000 ITT, 5 seconds

Question 16

Max reverse ITT & limitation:

Answer 16

760 ITT, no limitation

Question 17

Green range on Ng:

Answer 17

60 to 104%

Question 18

Yellow range on Ng:

Answer 18

No yellow range

Question 19

Red range on Ng:

Answer 19

Max/limit 104%

Question 20

Max takeoff Ng & limitation:

Answer 20

104% (limited to 5 minutes; TRQ limit)

Question 21

Max continuous Ng:

Answer 21

104%

Question 22

Min idle Ng:

Answer 22

50.7% (Ground Idle)
64.0% (Flight idle)

Question 23

Transient Ng:

Answer 23

104%

Question 24

Max Np RPM takeoff & limitation:

Answer 24

1700 RPM (limited to 5 minutes; TRQ limit)

Question 25

Max continuous RPM & limitation:

Answer 25

1700 RPM, no limit

Question 26

Transient RPM & limitation:

Answer 26

1870 RPM, 20 seconds

Question 27

Max reverse RPM & limitation:

Answer 27

1650 RPM, no limit

Question 28

Ground prohibited range RPM:

Answer 28

350 - 950 RPM in stabilized operation

Question 29

Green range oil PSI:

Answer 29

90 - 135 PSI

Question 30

Yellow range oil PSI:

Answer 30

60 - 90 PSI

Question 31

Red range oil PSI:

Answer 31

40 - 60 PSI

Question 32

Normal oil pressure:

Answer 32

90 - 135 PSI (green arc) at >72% Ng

Question 33

With engine TRQ below 35.87, oil pressure must be:

Answer 33

> 85 PSI at normal oil temperature

Question 34

Rule of thumb with undesirable oil pressure:

Answer 34

Oil PSI should be above 90 PSI

Question 35

When is 60 PSI oil pressure permissible? Under what condition?

Answer 35

At a reduced power not less than 23.9 TRQ.

Question 36

Oil PSI takeoff range:

Answer 36

90 - 135 PSI

Question 37

Max continuous oil PSI:

Answer 37

90 - 135 PSI

Question 38

Minimum idle oil PSI:

Answer 38

60 PSI

Question 39

Max starting oil PSI:

Answer 39

200 PSI

Question 40

Transient oil PSI:

Answer 40

Overall limits! 40 - 200 PSI, limited to 20 seconds

Question 41

Max reverse Oil PSI:

Answer 41

90 - 135 PSI

Question 42

Green range oil temp:

Answer 42

10 - 105

Question 43

Yellow range oil temp:

Answer 43

105 - 110

Question 44

Red range oil temp:

Answer 44

110

Question 45

Max takeoff oil temperature & limitation:

Answer 45

10 - 110, limited to 5 minutes (for TRQ)

Question 46

Max continuous oil temp & limitation:

Answer 46

10 - 105, no limitation

Question 47

Min idle oil temp range:

Answer 47

-40 to 110

Question 48

Transient range oil temperature:

Answer 48

-40 - 110

Question 49

Max reverse oil temp:

Answer 49

10 - 105

Question 50

Transient ITT & limitation:

Answer 50

870 ITT, 20 seconds

Question 51

Max MOR operation limitations:

Answer 51

Fuel flow: 512lbs/hr
Max TRQ: 30