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时间:2010-05-02 22:39来源:蓝天飞行翻译 作者:admin
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BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
22-11-00-058
A two-second delay allows for short interruptions.
14. If both autopilots are in the flare arm mode, both radio
altimeters must fail before the autopilots disengage.
15. After G/S engage, if the G/S receiver is invalid or a beam
anomaly occurs the autopilot disengages. There is a 10 second
delay to allow for interrupts.
16. If the minimum operating speed from the stall management
yaw damper is invalid, the autopilot disengages.
17. If the elevator command is more than the allowable limits,
the autopilot disengages.
DFCS - FUNCTIONAL DESCRIPTION - A/P PITCH MODE DISENGAGE LOGIC TABLE
EFFECTIVITY
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22-11-00-058
DFCS - FUNCTIONAL DESCRIPTION - A/P PITCH MODE DISENGAGE LOGIC TABLE
DFCS - FUNCTIONAL DESCRIPTION - A/P PITCH MODE DISENGAGE LOGIC TABLE
EFFECTIVITY
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22-11-00-058
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DFCS - FUNCTIONAL DESCRIPTION - A/P PITCH MODE DISENGAGE LOGIC TABLE
22-11-00
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737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
General
The red A/P warning light on the autoflight status annunciator
(ASA) can flash red or stay on steady red. The captain and the
first officer red A/P warning lights are in parallel so they go on
at the same time.
Steady Red A/P Warning Light
Circuits that can cause the steady red A/P warning light are in
these components:
* FCC A and FCC B
* Mode control panel (MCP).
FCC A and FCC B
The steady red light will come on if the stab out of trim warning
is set and all of these conditions are present:
* Airplane is in dual pitch mode
* The radio altitude is between 50 and 800 feet
* A/P G/S is engaged.
If the light is on when the airplane goes below 50 feet, it will stay
on.
The light will also come on if the DFCS is in BITE or if the FCCs
can not operate together.
The FCC will supply an A/P warning signal to the MCP if any of
these conditions are present:
* The airplane is on the ground and the FCC fails the power up
test
* The airplane is above 400 feet and cannot exit A/P G/A to
altitude acquire because single channel pitch authority is not
available
* The airplane is in A/P pitch G/A and the MCP bus fails.
MCP
If the MCP receives an A/P warning signal from either FCC and
the flashing red A/P circuit is not on, the red A/P warning lights
will come on steady. The steady red A/P warning lights will only
go off if the condition that causes the warning goes away.
Flashing Red A/P Warning Light
The circuits that cause the flashing red A/P warning lights are in
the MCP. If autopilot A or autopilot B disengage, the warning
detector will turn on a flasher. This flasher will cause the red A/
P warning lights in the ASAs to flash. The detector will also
send a signal to the aural warning module which turns on the
horn.
To reset the horn and flashing lights, push any one of these
switches:
* Captain A/P disengage switch
* First officer A/P disengage switch
DFCS - FUNCTIONAL DESCRIPTION - A/P WARNING LIGHTS
EFFECTIVITY
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737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
22-11-00-059
* A/P light on the captain ASA
* A/P light on the first officer ASA.
If either autopilot engages, the warning resets.
DFCS - FUNCTIONAL DESCRIPTION - A/P WARNING LIGHTS
EFFECTIVITY
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22-11-00-059
DFCS - FUNCTIONAL DESCRIPTION - A/P WARNING LIGHTS
DFCS - FUNCTIONAL DESCRIPTION - A/P WARNING LIGHTS
EFFECTIVITY
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