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* Glideslope pointer shows one dot of up deviation.
Data Correct - Down/Right Display
Data correct - down/right is the forth display in the self-test
sequence. It shows for six seconds on the standby attitude
indicator. Data correct - down/right causes these indications:
* LOC flag goes out of view
* G/S flag goes out of view
* Localizer pointer shows one dot of right deviation
* Glideslope pointer shows one dot of down deviation.
STANDBY ATTITUDE REFERENCE SYSTEM - ILS SELF-TEST
EFFECTIVITY
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The approach display goes back to normal indications at the
end of the self-test sequence.
STANDBY ATTITUDE REFERENCE SYSTEM - ILS SELF-TEST
EFFECTIVITY
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STANDBY ATTITUDE REFERENCE SYSTEM - ILS SELF-TEST
STANDBY ATTITUDE REFERENCE SYSTEM - ILS SELF-TEST
EFFECTIVITY
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STANDBY ATTITUDE REFERENCE SYSTEM - ILS SELF-TEST
STANDBY ATTITUDE REFERENCE SYSTEM - ILS SELF-TEST
EFFECTIVITY
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STANDBY ATTITUDE REFERENCE SYSTEM - ILS SELF-TEST
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737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
Purpose
The multi-mode receiver (MMR) contains the instrument
landing system and the global positioning system functions.
This section only covers the instrument landing system function.
The instrument landing system (ILS) provides lateral and
vertical position data neccessary to put the airplane on the
runway for approach. The system uses signals from a
glideslope ground station and a localizer ground station.
The glideslope ground station transmits signals to give the
airplane a descent path to the touchdown point on the runway.
The localizer ground station transmits signals to give the
airplane lateral guidance to the runway centerline.
Abbreviations and Acronyms
* AC - alternating current
* ACP - audio control panel
* alt - alternate
* altn - alternate
* app - approach
* ARINC - Aeronautical Radio, Inc.
* BITE - built-in test equipment
* BL - buttock line
* CAPT - captain
* DC - direct current
* DEU - display electronics unit
* DME - distance measurement equipment
* EFIS - electronic flight instrument system
* F/O - first officer
* FCC - flight control computer
* FDAU - flight data acquisition unit
* FMC - flight management computer
* freq - frequency
* fwd - forward
* grd - ground
* ILS - instrument landing system
* LCD - liquid crystal display
* LED - light emitting diode
* LRU - line replaceable unit
* maint - maintenance
* MHz - megahertz
* MMR - multi-mode receiver
* MKR - marker beacon
* NAV - navigation
* NCD - no computed data
* ND - navigation display
* norm - normal
* PFD - primary flight display
* rcvr - receiver
* REU - remote electronics unit
* RF - radio frequency
* spkr - speaker
* sta - station
* tfr - transfer
* V - volts
* xfr - transfer
* xmtr - transmitter
INSTRUMENT LANDING SYSTEM (ILS) - INTRODUCTION
EFFECTIVITY
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INSTRUMENT LANDING SYSTEM (ILS) - INTRODUCTION
INSTRUMENT LANDING SYSTEM (ILS) - INTRODUCTION
EFFECTIVITY
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General
The instrument landing system (ILS) has two multi-mode
receivers (MMRs) that contain the ILS function. The ILS
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