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737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
34-21-00-011
IFSAU
The integrated flight systems accessory unit receives all IR data
and sends it to the flight data acquisition unit for recording.
ISDU
The inertial system display unit (ISDU) receives this IR data to
show on the IRS display:
* Present position
* True track
* Groundspeed
* Wind speed
* Wind direction
* True heading
* Time remaining until alignment complete
* Bite messages.
AACU
The anti-skid auto-brake control unit (AACU) uses this IR data
for auto-brake calculations:
* Groundspeed
* Body longitudinal acceleration
* Pitch attitude.
A/T Computer
The ADIRU sends this IR data to the A/T computer:
* Pitch angle
* Roll angle
* Body longitudinal acceleration
* Body normal acceleration
* Groundspeed
* Inertial vertical speed.
The A/T computer uses this data for throttle command
calculations.
FMCS
The ADIRU sends this IR data to the flight management
computer system (FMCS):
* Present position
* Groundspeed
* True heading
* Magnetic heading
* Pitch angle
* Roll angle
* Inertial altitude
* Inertial vertical speed
* N-S velocity
* E-W velocity.
The FMCS uses this data for performance and navigation
calculations.
ADIRS - RIGHT INERTIAL REFERENCE DIGITAL OUTPUTS
EFFECTIVITY
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737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
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ADIRS - RIGHT INERTIAL REFERENCE DIGITAL OUTPUTS
ADIRS - RIGHT INERTIAL REFERENCE DIGITAL OUTPUTS
EFFECTIVITY
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BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
34-21-00-011
General
The left ADIRU supplies air data reference (ADR) data to many
systems and components. ADR data is on ARINC 429 data
buses. The data on each bus is the same. One data bus goes
from the ADR section of the ADIRU to the IR section. These
components and systems receive ADR data from the left ADIRU:
* Auto-throttle (A/T) computer
* Display electronics unit (DEU) 1 and 2
* Flight control computer (FCC) A
* Flight data acquisition unit (FDAU)
* Air traffic control (ATC) 1 and 2
* Flap/slat electronics unit (FSEU)
* Ground proximity warning computer (GPWC)
* Stall management yaw damper (SMYD) 1
* Cabin pressure controller 1 and 2
* Weather radar receiver transmitter (WXR R/T)
* Display interface unit
* Flight management computer (FMC) 1.
A/T Computer
The ADIRU sends this ADR data to the A/T computer for throttle
command calculations:
* Computed airspeed
* True airspeed
* Maximum operating speed
* Mach
* Maximum operating mach
* Uncorrected barometric altitude
* Corrected barometric altitude
* Static air temperature
* Total air temperature
* Static pressure
* Angle of attack.
DEU
The ADIRU sends this ADR data to the DEUs:
* Computed airspeed
* Mach
* True airspeed
* Total pressure
* Corrected barometric altitude
* Uncorrected barometric altitude
* Total air temperature
* Air data discretes.
The DEU uses this data for display information and sends it on
to other systems such as the electronic engine control (EEC).
FCC A
The ADIRU sends this ADR data to FCC A:
* Computed airspeed
* True airspeed
* Corrected baro altitude
* Uncorrected barometric altitude
* Altitude rate
* Static pressure
* Mach.
ADIRS - LEFT AIR DATA OUTPUTS
EFFECTIVITY
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D633A101-SHZ1 Jun 10/2003
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
34-21-00-012
FCC A uses this information for automatic flight control mode
calculations.
FDAU
The ADIRU sends all ADR data to the flight data acquisition unit
(FDAU). The FDAU selects and formats this data and then sends
it to the digital flight data recorder (DFDR) to be recorded.
ATC Transponders
The ADIRU sends uncorrected baro altitude data to the ATC
transponders for altitude reporting.
FSEU
The ADIRU sends computed airspeed to the flap slat electronics
unit (FSEU) for flap load relief calculations and as part of its
uncommanded motion detection logic.
GPWC
　
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