Engine Limitations ALF 502 R5 Flashcards

1
Q

STARTER MOTOR DUTY CYCLE
- Total start attempts and cooling time

A

5 total attempts:

  • 60 seconds over first 3 starts with 1m cooling then 1hr cooling
  • 40 seconds over last 2 starts with 1m cooling between then 4hrs cooling
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2
Q

Max start TGT

A

849c up to 865c for 10 seconds

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3
Q

Inflight start must not be attempted if N2 has indicated below 1% for more than __ minutes

A

7

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4
Q

Normal in-flight start envelope is:
N2 __% or greater
Altitude ___ft or below
IAS between __ & __

If essential for safe flight, relights may be attempted up to __ft, airspeed down to __ KIAS and N2 down to __%

A
  • N28% or greater
  • 20 000ft or below
  • between 185 or 240KIAS
  • 25000ft
  • 170Kias
  • 7% N2
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5
Q

Ground idle parameters:
N2 between
Min oil pressure
Max oil temperature

A

49 to 51% N2
25psi
133c

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6
Q

Flight idle parameters:
ENG ANT-ICE OFF min N2
ENG ANT-ICE ON min N2
- abv 300ft agl
- blw 300ft agl

A

ENG ANT-ICE OFF 60% N2
ENG ANT-ICE ON 67% N2 above 300ft agl
60% N2 below 300ft agl

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7
Q

MAX CONTINUOUS THRUST
- N1
- N2
- TGT

A

N1 97.0%
N2 96.9%
TGT 857c

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8
Q

TAKEOFF THRUST
N1 steady and transient (10s)
N2 steady and transient (10s)
TGT steady and transient (15s)

A

N1 97% and 100% no more than 10s
N2 98.8 and 100% no more than 10s
TGT 882c and 904c no more than 15s

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9
Q

Cool down period prior to shutdown below flight idle

A

2m

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10
Q

Maximum N1 during high surface wind operation

A

55% N1

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