Temporary Inhibition of the Glide Slope Mode Inoperative

TASK 34-48-00-810-819-A
Temporary Inhibition of the Glide Slope Mode Inoperative

1. Possible Causes

GPWC [1WZ]
wiring of the GLIDE SLOPE MANUAL INHIBIT discrete from the GPWC (1WZ) to the first terminal block

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
TSM TASK 34-48-00-810-817-A	Self-Test Function of the GPWS Inoperative
AMM 34-48-00-710-001	Operational Test of GPWS Ground Self-test Function
ASM 344801
AMM 34-48-34-000-001	Removal of the GPWC
AMM 34-48-34-400-001	Installation of the GPWC

3. Fault Confirmation
Subtask 34-48-00-710-061-D ** ON A/C NOT FOR ALL

A. Test
(1) Do the operational test of Enhanced GPWS ground self-test function AMM 34-48-00-710-001.
(2) Make sure that you can do the test with the two GPWS/G/S pushbutton switches (4WZ and 5WZ).

Subtask 34-48-00-710-061-F ** ON A/C NOT FOR ALL

A. Test
(1) Do the operational test of Enhanced GPWS ground self-test function AMM 34-48-00-710-001.
(2) Make sure that you can do the test with the two PULL UP/GPWS pushbutton switches (4WZ and 5WZ).

4. Fault Isolation
Subtask 34-48-00-810-071-A

A. Do the procedure:
(1) If the test is not possible with one or two pushbutton switches:

refer to the procedure (Ref. TSM TASK 34-48-00-810-817).

(2) If the test is possible with the two pushbutton switches and inhibition is not possible:

replace the GPWC [1WZ] AMM 34-48-34-000-001 and AMM 34-48-34-400-001.

(a) If the fault continues:

do a check and repair the wiring of the GLIDE SLOPE MANUAL INHIBIT discrete from the GPWC (1WZ) to the first terminal block ASM 344801.

Subtask 34-48-00-710-062-A

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:33:15 UTC