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card to write small errors that the compensation screws cannot
remove.
Training Information Point
Four screws hold the standby magnetic compass in place. Use
only non-magnetic tools and screws to remove and install the
standby magnetic compass.
You must do a compass swing after you replace the standby
magnetic compass.
STANDBY MAGNETIC COMPASS
EFFECTIVITY
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STANDBY MAGNETIC COMPASS
STANDBY MAGNETIC COMPASS
EFFECTIVITY
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Purpose
The standby attitude reference system is a backup system. It
gives the pilots indications of airplane attitude in pitch and roll.
The standby attitude reference system also shows either the
deviation from the instrument landing system (ILS) or the global
landing system (GLS) localizer and glideslope deviation.
General
The standby attitude reference system operates independently
of the air data inertial reference system.
Abbreviations and Acronyms
* AC - alternating current
* APP - approach
* ARINC - Aeronautical Radio, Inc.
* B/CRS - back course
* DC - direct current
* G/S - glideslope
* ILS - instrument landing system
* LOC - localizer
* NCD - no computed data
* V - volts
STANDBY ATTITUDE REFERENCE SYSTEM - INTRODUCTION
EFFECTIVITY
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STANDBY ATTITUDE REFERENCE SYSTEM - INTRODUCTION
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General
The standby attitude reference system is an alternate source of
airplane pitch and roll attitude information.
The standby attitude reference system can also show
instrument landing system (ILS) or global landing system
(GLS) localizer and glideslope deviation. ILS and GLS data is
from multi mode receiver (MMR) 1.
The failure flags on the standby attitude indicator tell the flight
crew if there is an ILS, GLS, or indicator failure.
Power
28v dc from the battery bus supplies power for the standby
attitude reference system.
STANDBY ATTITUDE REFERENCE SYSTEM - GENERAL DESCRIPTION
EFFECTIVITY
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EFFECTIVITY
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EFFECTIVITY
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