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EGPWS LINE MAINTENANCE MANUAL
CAGE CODE: 97896 SCALE: NONE SIZE: A DWG NO.: 060-4199-180 REV: G SHEET 37 of 68
3.7 LEVEL 5 SELF-TEST - ALERT HISTORY
Level 5 Self-Test provides enunciation of the alerts (cautions and warnings) recorded over the last 10 flight legs.
Level 5 Self-Test is initiated by pressing the cockpit Self-Test button within 3 seconds of the end of Level 4 Self-
Test.
If any alerts were recorded in the last ten flight legs then voice sequence as described in the following table will be
enunciated. Otherwise, the message “NO WARNINGS” will be enunciated.
During Level 5 Self-Test, a Short Cancel bumps the enunciation to the next flight leg with faults (if any).
During Level 5 Self-Test, a Long Cancel terminates the Self-Test level and “PRESS TO CONTINUE” is enunciated
for proceeding to Level 6 Self-Test.
TABLE 3-9: LEVEL 5 SELF-TEST INFORMATION
THE FOLLOWING INFORMATION IS GIVEN IN THE LEVEL 5 SELF-TEST:
1. Enunciate the number of the most recent flight leg with alerts as “FLIGHT X”, where “X” is a number from 1
to 10 where 1 is the most recent flight leg
2. Enunciate any alerts stored for leg X
3. Increment to next oldest leg with alerts (if any) and repeat the above sequence
For Example:
If a glideslope alert were given 7 flight legs earlier, the messages would be:
“WARNING HISTORY”
“FLIGHT 7”
“GLIDESLOPE”
“PRESS TO CONTINUE”
3.8 LEVEL 6 SELF-TEST - DISCRETE INPUT TEST
Level 6 Self-Test provides enunciation of any changes in the status of discrete inputs for verification proper function
and discrete input wiring. Level 6 Self-Test is initiated by pressing the cockpit Self-Test button within 3 seconds of
the end of Level 5 Self-Test. The results are indicated in the following sections.
If a state change occurs on any discrete input (other than the Self-Test input as it is directly tested in its use to
control the test sequences), the EGPWC will annunciate the functional name of the discrete followed by its new
state. For example, if the Glideslope Cancel discrete input in the current configuration is defined as ground =
cancel, and the discrete transitions from open to ground, Level 6 Self-Test will say: “GLIDESLOPE CANCELED”. If
the input is only momentarily grounded Level 6 Self-Test will say: “GLIDESLOPE CANCELED - GLIDESLOPE
ENABLED.”
NOTE: Not all discretes are used in an installation; therefore, unused discretes shall not apply. See aircraft wiring
diagrams to determine applicable discretes.
During Level 6 Self-Test the message “DISCRETE INPUT TEST - PRESS TO CANCEL” is enunciated every 60
seconds. This provides additional evidence; along with the continued illumination of the INOP lights/fail
annunciations, that Self-Test is still in progress.
During Level 6 Self-Test, a Short Cancel or Long Cancel terminates Self-Test and “END OF SELF-TEST” is
enunciated. As with all Self-Test levels, if the aircraft goes in air, then Self-Test is terminated.