Limitations Flashcards by Skyler Zee

Q

Low-end TRQ limit:

A

23.9 TRQ when below 1000RPM

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Q

Green range on TRQ:

A

0 - 36.9 TRQ

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Q

Yellow range on TRQ:

A

36.9 - 44.34 TRQ

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Q

Red range on TRQ:

A

44.34 TRQ, max limit 61.0 TRQ

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Q

Takeoff TRQ & limitation:

A

44.34 TRQ, 5 minutes

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Q

Max continuous TRQ & limitation:

A

36.95 TRQ, no time limit

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Q

Transient TRQ & limitation:

A

61.0 TRQ, 20 seconds

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Q

Max reverse TRQ & limitation:

A

34.25 TRQ, no time limit

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Q

Green range on ITT:

A

400 - 760 ITT

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Q

Yellow range on ITT:

A

760 - 800 ITT

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Q

Red range on ITT:

A

800 ITT / 1000 ITT (startup)

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Q

Max takeoff ITT & limitation:

A

800 ITT, limited to 5 minutes

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Q

Max continuous ITT & limitation:

A

760 ITT, no time limit

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Q

Minimum idle ITT & limitation:

A

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

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Q

Max starting ITT & limitation:

A

1000 ITT, 5 seconds

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Q

Max reverse ITT & limitation:

A

760 ITT, no limitation

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Q

Green range on Ng:

A

60 to 104%

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Q

Yellow range on Ng:

A

No yellow range

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Q

Red range on Ng:

A

Max/limit 104%

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Q

Max takeoff Ng & limitation:

A

104% (limited to 5 minutes; TRQ limit)

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Q

Max continuous Ng:

A

104%

Q

Min idle Ng:

A

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

Q

Transient Ng:

A

104%

Q

Max Np RPM takeoff & limitation:

A

1700 RPM (limited to 5 minutes; TRQ limit)

Max continuous RPM & limitation:

1700 RPM, no limit

Transient RPM & limitation:

1870 RPM, 20 seconds

Max reverse RPM & limitation:

1650 RPM, no limit

Ground prohibited range RPM:

350 - 950 RPM in stabilized operation

Green range oil PSI:

90 - 135 PSI

Yellow range oil PSI:

60 - 90 PSI

Red range oil PSI:

40 - 60 PSI

Normal oil pressure:

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

With engine TRQ below 35.87, oil pressure must be:

>85 PSI at normal oil temperature

Rule of thumb with undesirable oil pressure:

Oil PSI should be above 90 PSI

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

At a reduced power not less than 23.9 TRQ.

Oil PSI takeoff range:

90 - 135 PSI

Max continuous oil PSI:

90 - 135 PSI

Minimum idle oil PSI:

60 PSI

Max starting oil PSI:

200 PSI

Transient oil PSI:

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

Max reverse Oil PSI:

90 - 135 PSI

Green range oil temp:

10 - 105

Yellow range oil temp:

105 - 110

Red range oil temp:

110

Max takeoff oil temperature & limitation:

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

Max continuous oil temp & limitation:

10 - 105, no limitation

Min idle oil temp range:

-40 to 110

Transient range oil temperature:

-40 - 110

Max reverse oil temp:

10 - 105

Transient ITT & limitation:

870 ITT, 20 seconds

Max MOR operation limitations:

Fuel flow: 512lbs/hr Max TRQ: 30