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ground when you put the TEST/NORMAL switch on the flight
recorder test module in the TEST position.
Flight Recorder/Mach Airspeed Warning Test Module
The flight recorder test module shows the condition of the flight
recorder system. If there is a system fault, an amber OFF light
comes on. The OFF light also comes on when the system is off.
The flight recorder test module has a TEST/NORMAL switch.
When this switch is in the TEST position, the FDR gets power.
Input Signals
The flight data acquisition unit (FDAU) processes analog,
digital, and discrete signals from many sensors and systems.
FDRS - GENERAL DESCRIPTION
EFFECTIVITY
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Config 002
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A three-axis accelerometer gives acceleration data along the
vertical, lateral, and longitudinal axis. The flight data recorder
system sensors send data about the position of the flight
surfaces and controls to the FDAU.
Aircraft Identification
A program switch module gives the aircraft identification
number to the flight data acquisition unit (FDAU).
FDAU
The FDAU collects flight data for the flight data recorder. This is
mandatory data.
The FDAU also collects aircraft condition monitoring system
(ACMS) data for airline use. This is non-mandatory data.
The FDAU changes the mandatory data into the Harvard
biphase format. This data goes to the flight data recorder.
The FDAU has ACMS software in its memory. This software
selects input data to monitor. The data is changed to a digital
format. The FDAU keeps it in memory. Data can go to the data
loader control panel and then move to a disk in a data loader.
The FDAU status relay gets status from the FDAU. The status
relay controls the FDRS OFF light.
FDR
The FDR gets formatted data from the FDAU and keeps it in
solid state non-volatile memory. The flight recorder has the
capacity to keep at least the last 25 hours of flight data.
The FDR is a fire and crash resistant LRU. An underwater
locator beacon is on the front of the FDR.
System Test Plug/Connector
Connect ground support equipment to the system test plug to
test the FDRS.
FDRS - GENERAL DESCRIPTION
EFFECTIVITY
SHZ ALL 31-31-00
Config 002
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737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
31-31-00-002.002
FDRS - GENERAL DESCRIPTION
FDRS - GENERAL DESCRIPTION
EFFECTIVITY
SHZ ALL 31-31-00
Config 002
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737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
31-31-00-002.002
Flight Compartment
These are the flight data recorder system components in the
flight compartment:
* Flight recorder/mach airspeed warning test module on the
P5 aft overhead panel
* System test plug/connector on the outer wall behind the P18
circuit breaker panel.
These are the components in the flight compartment that
interface with the flight data recorder system:
* Printer on the aft electronic panel P8
* Control display units on the P9 forward electronics panel
* Master caution lights and OVERHEAD caution annunciator
on the P7 panel
* Data loader control panel on the P61 panel.
FDRS - FLIGHT COMPARTMENT COMPONENT LOCATION
EFFECTIVITY
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FDRS - FLIGHT COMPARTMENT COMPONENT LOCATION
FDRS - FLIGHT COMPARTMENT COMPONENT LOCATION
EFFECTIVITY
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Flight Data Acquisition Unit Location
The flight data acquisition unit (FDAU) is on the E3-2 shelf in the
EE compartment. The program switch module is near the rear
of the equipment rack.
FDRS - ELECTRONIC EQUIPMENT COMPARTMENT COMPONENT LOCATION
EFFECTIVITY
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FDRS - ELECTRONIC EQUIPMENT COMPARTMENT COMPONENT LOCATION
　
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