POH powerplant limitations (section 2) Flashcards

1
Q

what is the maximum torque for normal operation at max power?

A

101.4% (if exceeded refer to maintenance manual)

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2
Q

what is the max ITT at maximum power?

A

923 degrees centrigrade

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3
Q

what is the maximum ITT for RPM below 99%?

A

885 degrees centigrade (except during starting)

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4
Q

what is max RPM at max power?

A

101% (maximum continuous RPM)

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5
Q

what is the permitted range of oil pressure at max power?

A

70-120 psi

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6
Q

what is the permitted range of oil temperature at max power?

A

55-110centigrade continuous

110-127 centigrade for 5 minutes

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7
Q

what is the permitted RPM range at flight idle?

A

96-100%

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8
Q

what is the permitted oil pressure range at flight idle?

A

70-120 psi

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9
Q

what is the permitted oil temperature range at flight idle?

A

55-110 centigrade continuous

110-127 centigrade for 5 minutes

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10
Q

what is the permitted RPM for ground idle?

A

67% minimum sustained

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11
Q

what is the permitted oil pressure range at ground idle?

A

40-120psi (transients below 40 psi are permitted)

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12
Q

what is the permitted oil temperature range at ground idle?

A

-40 - +110 centigrade continuous

110-127 for 5 minutes

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13
Q

what is the permitted RPM for maximum reverse?

A

93% minimum when landing, 94.5% minimum when static

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14
Q

what is the permitted oil pressure for maximum reverse?

A

70-120 psi

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15
Q

what is the permitted oil temperature for maximum reverse?

A

55 to 110 centigrade continuous

1110 to 127 for 5 minutes

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16
Q

what is the max torque for max reverse (static)

A

50%

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17
Q

what is the max ITT for starting?

A

1149 centigrade for 1 second

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18
Q

what is the permitted oil temperature for starting?

A

-40 to 127 degrees continuous

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19
Q

what is the max RPM when the prop is windmilling?

A

0-5% continuously

5-10% for 30 mins

10-18% for 5 mins

18-28% (do not allow windmilling in this range longer than time required to transition through this speed range)

28-100% for 1 minute

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20
Q

when can we operate at 18-28% RPM?

A

transients occurring during engine start and shutdown

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21
Q

what is minimum RPM during flight?

A

96%

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22
Q

what is max continuous RPM for normal operation?

A

101% continuous

101-101.4% for 5 minutes

  1. 5- 105.5% for 30 seconds
  2. 6- 106% for 5 seconds

never exceed 106%

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23
Q

what is minimum oil temperature for starting and ground operation?

A

-40 centigrade. if below this preheat oil before start

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24
Q

what is minimum oil temperature for takeoff and flight?

A

55 centigrade

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25
Q

what is minimum oil temperature for an air start?

A

4 centigrade

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26
Q

what are the oil temperature parameters for ground operation?

A

55-110 centigrade continuous

110-127 centigrade continuous below 100% torque

27
Q

what is the lower yellow arc (caution range) of RPM?

A

70-96%

28
Q

what is the green arc (normal range) of RPM?

A

96%-101%

29
Q

what is the red line (max limit) of RPM?

A

101%

30
Q

what is the orange triangle limit of RPM and what is it used for?

A

104% allowed for governor overspeed check only

31
Q

what is the green arc (normal range) of interstage turbine temperature?

A

300-923 degrees centigrade

32
Q

what is the upper yellow arc of ITT?

A

885-923 degrees centigrade. 885 is max allowable below 99% RPM except during start

33
Q

what is the red line of ITT?

A

923 degrees centigrade (max allowed at 100% RPM)

34
Q

what is the orange triangle of ITT?

A

1149 degrees which is allowed for 1 second during start

35
Q

what is the lower red line of oil temperature?

A

-40 centigrade

36
Q

what is the lower yellow arc of oil temperature?

A

-40 - +55

37
Q

what is the green arc of oil temperature?

A

55-110 centigrade

38
Q

what is the upper yellow arc of oil temperature?

A

110-127

39
Q

what is the upper red line of oil temperature>

A

127

40
Q

what is the lower red line of oil pressure?

A

40psi

41
Q

what is the lower yellow arc of oil pressure?

A

40-70psi

42
Q

what is the green arc of oil pressure?

A

70-120 psi

43
Q

what is the upper red line of oil pressure?

A

120 psi

44
Q

what is the green arc of torque?

A

0-101.4%

45
Q

what is the upper red line of torque?

A

101.4%

46
Q

what is the maximum altitude for air starts?

A

20,000ft (only applicable if certified operating altitude is above 15000ft)

47
Q

what is the minimum airspeed for air starts?

A

92 IAS

48
Q

what is the minimum oil temperature for air starts?

A

4 degrees centigrade

49
Q

recite the rules for operating the starter? (cycles 1 to 3)

A

cycle 1: max 60 sec on

min 60 sec off

cycle 2: max 60 sec on

min 5 mins off

cycle 3: max 60 sec on

min 1 hr off

50
Q

what is minimum fuel for takeoff?

A

2 x 115 litres (200lb)

51
Q

what is total fuel?

A

2441 litres (4251lb)

52
Q

what is total usable fuel?

A

2386 litres (4156lb)

53
Q

what is the minimum fuel required in each feeder tank for jet pump operation?

A

10 litres (17lb)

54
Q

what is the max difference in fuel quantity between each wings fuel systems?

A

700lb

55
Q

with respect to the aileron trim how do we compensate for a fuel imbalance?

A

10% of aileron trim into the light wing for every 100lb of imbalance

56
Q

what is the maximum lateral asymmetry with a crosswind of more than 15kts and/or landing single engine?

A

299lb

57
Q

what is the minimum oil quantity per per tank before takeoff?

A

4.7 litres

58
Q

what is the maximum oil capacity per tank?

A

5.9 litres

59
Q

what is the maximum usable oil per tank?

A

5 litres

60
Q

what is the max oil consumption per engine?

A

1 litre per 13.2 hours

61
Q

can we mix types or brands of oil?

A

no

62
Q

why can we not turn prop deicing on when the prop is stationary?

A

this can overheat the heating mats

63
Q

what is the propellor operating speed?

A

1591 RPM at 100% engine RPM

64
Q

what is the blade angle position with the power lever in FI measured at the 30 inch station?

A

13 degrees +/- 20