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CRJ700 Engines
CF34-8C5B1
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Start OIL Temp (minimum)
-40C
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Start OIL PRESS
Amber Value for max. of 10 min
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Before attempting to ground start ITT must be below?
120oC
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Before attempting to air start engine ITT must be below?
90oC
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Max Oil Pressure when oil temp transient is less than 60oC
152psi
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MAX Oil Pressure indication?
182psi displayed as amber dashes.
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MAX Oil Pressure during start
Oil pressure above 95psi may be greater than 95psi for a maximum of 10mins.
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Low Oil Pressure (amber values) requires oil temperature monitoring when???
Above IDLE
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Pilot initiated APR thrust is PROHIBITED at what ALT except in the case of safety of flight:
- Above 7,500MSL or
- Within the first 30minutes after any engine start at altitudes below 7,500MSL.
- NOTE: APR events must be logged in the AML in APR thrust was used.
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What ITT Status message that must be logged in the AML
ITT EXCEED B(B1)(C)
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Thrust Management Data target N1 value allowable tolerance.
(+1.0%) With the engine running and bleeds configured for takeoff, the crews must verify that the target N1 values correspond to the data presented in the thrust settings charts.With the thrust levers set for takeoff, target and actual N1 values should match.
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Before the first flight of the day, when the aircraft is cold-soaked at an ambient temperature of -30oC or below for more than eight hours requires what procedures???
- The engines must be motored for 60 seconds and the fan rotation must be verified on the N1 indicator before an engine start is initiated.
- The thrust reverser's must be actuated until the deploy and stow cycles are two seconds or less
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Continuous ignition must be used when?
- Takeoffs and Landings on an contaminated runway.
- Flight through moderate or heavier intensity rain.
- Flight through moderate or heavier intensity turbulence.
- Flight in the vicinity of thunderstorms.
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MAX N1 during WARM UP?
- Engine must remain at IDLE until oil temp reaches normal operation range.
- During all starts, do not exceed 75% N1 for two minutes after start, or until all operating indications are in the normal range, whichever is longer.
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Max starter speed
45% N2 RPM indication
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Thrust lever movement from SHUT OFF to IDLE ITT must be below... for ground start and below ... for air start.
- 120oC for ground start
- 90oC for air start
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Engine Start (Ground) STARTER LIMITATIONS
- 1st and 2nd cycles.............90sec ON, 10sec OFF
- 3rd through 5th cycles.......90sec ON, 5 mins OFF
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Engine Start or Motoring (Flight) STARTER LIMITATIONS
- 1st cycle...........................120sec ON, 10sec OFF
- 2nd through 5th cycles.......60sec ON, 5mins OFF
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Motoring (Ground) STARTER LIMITATIONS
- 1st cycle.............................90sec ON, 5mins OFF
- 2nd through 5th cycles........30sec ON, 5mins OFF
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Start limit Caution
Motoring Cycle limits may NOT be combined with Starting Cycle limits. Anytime the Trust Lever has been advanced to IDLE, Motoring Cycle limits CANNOT be applied.
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