曝光台 注意防骗
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find a fault message on the control display unit (CDU). See the
TRAINING INFORMATION POINT page in this section for more
information.
Engine Hot Start
The EGT digital display flashes when the EEC finds there is a
possible hot start. If the EGT starting limit is exceeded, the EEC
stops fuel flow and ignition. The EGT digital display continues to
flash until you move the engine start lever to the cutoff position.
This system operates on the ground only.
NOTE: If you operate engines, you should know normal engine
starting parameters. You should also know the
maximum and minimum limits for each parameter.
You should stop a hot engine start before the EEC
does.
In-Flight Start
The crew puts the engine start switch to the FLT position for a
windmill start. A windmill start does not use the starter.
The crew uses the starter in flight if the airplane is out of
windmill start limits. See the flight operation manual for more
information about these limits. The CDS tells the crew that the
airplane is out of limits to windmill start the engine. The
message X-BLEED START shows above the N2 digital indicator.
For this condition, the flight crew uses the starter to start the
engine. The OPERATION page in this section shows this
message on the display.
Automatic Ignition
The EEC can automatically start ignition. See the engine ignition
chapter for more information. (CHAPTER 74)
ENGINE STARTING - FUNCTIONAL DESCRIPTION
EFFECTIVITY
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General
You can use the control display units (CDUs) to troubleshoot
problems when the engine does not start.
The EEC keeps maintenance messages in its non-volatile
memory. The EEC keeps a message during an engine start if
the EGT does not increase in 15 seconds after you move the
start lever to the idle position. You use the CDU to see this
message.
See the engine indicating chapter for more information about
engine troubleshooting with the CDU. (CHAPTER 77)
ENGINE STARTING - TRAINING INFORMATION POINT
EFFECTIVITY
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General
These are the flight compartment controls you use to start the
engine:
* Engine start switches
* Ignition select switch
* Engine start levers.
Pneumatic power must be available to start the engine on the
ground.
You must monitor these engine parameters during engine
starting:
* N2
* Oil pressure
* N1
* Fuel flow
* EGT.
Engine Start
This is a summary of the engine start procedure:
* Follow safety procedures and airplane and engine
limitations
* Set the ignition select switch to IGN L or IGN R
* Put the engine start switch to the GRD position
* Look for start valve open indication
* Monitor N2
* Make sure oil pressure increases
* Speak with ground personnel to make sure N1 begins to turn
counterclockwise
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