Egpws Normal Procedures; Ga-Egpws System Self-Test - Honeywell Bendix/King KTA970 Pilot's Manual

Traffic alert and collision avoidance system; multi-hazard awareness system

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Table of Contents

KTA 970/KMH 980 Pilot's Guide

NORMAL PROCEDURES

GA-EGPWS SYSTEM SELF-TEST

Prior to flight, the system should be tested for proper operation.

Normally, this is done by the pilot during the BEFORE TAKE-OFF check.

All aircraft power and systems should be up and running, and the GA-

EGPWS "Not Available" annunciator lamp should be off.

NOTE: Because the system requires GPS information to operate, it may

be several minutes after power-up before the aircraft GPS system sup-

plies accurate information to the GA-EGPWS. If the internal GPS card is

used to supply position information, it may take additional time for satel-

lite acquisition depending upon the frequency of use of the system. The

internal GPS card requires a current almanac to locate GPS satellite

positions. This almanac can take several minutes to load. When an

accurate GPS position is acquired and the rest of the GA-EGPWS sys-

tem is available, the "NOT AVAILABLE" lamp will extinguish.

To perform a normal GA-EGPWS Self-Test:

• Press the Self-Test switch. When a Self-Test is initiated, the GA-

EGPWS first checks for any configuration (installation or database)

errors. If any are detected, it is audibly enunciated and the test is ter-

minated. If none are detected, the test continues through a sequence

resulting in turning on and off all system annunciators, enunciating

specific audio messages, and if enabled, displaying a video test pat-

tern on the terrain display. Any functions determined inoperative are

also enunciated. The Self-Test terminates automatically at its conclu-

sion.

The following is a description of the expected results of a typical level

1 Self-Test. Actual annunciation nomenclature and sequence may dif-

fer depending on the installation.

• Observe that the amber "Not Available" and red "Warning" annuncia-

tor lamps associated with the system illuminate.

• Observe that the voice callout "EGPWS SYSTEM, OK" is heard.

• Observe that the red "Warning" annunciator lamp extinguishes, and

the amber "Caution" annunciator lamp illuminates.

• Observe that the GA-EGPWS Terrain Display shows the Test

Pattern.

• Observe that the Terrain Display Test Pattern is removed.

• Observe that the amber "Caution" and amber "Not Available" annunci-

ator lamps associated with the system extinguish.

Rev 3