Continuous Selection of the LDG FLAP 3 Position

TASK 34-48-00-810-828-A
Continuous Selection of the LDG FLAP 3 Position

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
ESPM 2045110
ASM 344801

3. Fault Confirmation
Subtask 34-48-00-710-076-A

A. Test
Not applicable, you cannot confirm this fault on the ground.

4. Fault Isolation
Subtask 34-48-00-810-090-A

A. Do the procedure:

on the GPWS section of panel 21VU:
. make sure that the GPWS/LDG FLAP 3 pushbutton switch (13WZ) is not pushed (the ON legend is off)
. make sure that the GPWS/FLAP MODE pushbutton switch (7WZ) is not pushed (the OFF legend is off).
on the center pedestal, on the panel 114VU, put the flap and slat control lever in the 3 position
make sure that there is no ground at pin AB/9C of the GPWC (1WZ).

(1) If there is ground:

do a check for a short to ground at the wiring of the GPWS/LDG FLAP 3 pushbutton switch (13WZ):
. pin A/B3 to GPWC (1WZ) pin AB/9C
. pin A/B2 to SFCC1 (21CV) pin AB/8B
ASM 344801.

(a) If there is a short to ground:

(b) If there is no short to ground:

[Rev.8 from Aug 2018] 2026.04.04 04:33:16 UTC