Loss of the Left Spoiler 1 Position Signal for the SEC 3

TASK 27-60-00-810-811-A
Loss of the Left Spoiler 1 Position Signal for the SEC 3

1. Possible Causes

SEC-3 [1CE3]
wiring of the ANI 2-4 signal from the SEC 3 (1CE3) to the first terminal block

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
ASM 279404
AMM 27-94-34-000-001	Removal of the SEC
AMM 27-94-34-400-001	Installation of the SEC
AMM 27-96-00-740-001	BITE Test of the EFCS (Ground Scanning)
AMM 29-10-00-863-001	Pressurize the Green Hydraulic System with a Hydraulic Ground Power-Cart
AMM 29-10-00-864-001	Depressurize the Green Hydraulic System

3. Fault Confirmation
Subtask 27-60-00-860-052-A

A. Job Set-Up
(1) Pressurize the Green hydraulic system AMM 29-10-00-863-001.
(2) Pull the speedbrake control lever (7CE) up to the armed position on the panel 11VU.

Subtask 27-60-00-740-052-A

B. Test
(1) Do the BITE test of the EFCS (Ground scanning) AMM 27-96-00-740-001.

Subtask 27-60-00-860-053-A

C. Put the aircraft back to its initial configuration
(1) Depressurize the Green hydraulic system AMM 29-10-00-864-001.
(2) Disarm the speedbrake control lever (7CE) on the panel 11VU.

4. Fault Isolation
Subtask 27-60-00-810-060-A

A. If the BITE test gives the maintenance message:
SEC 3 COM OR WIRING FROM L SPLR 1 POS XDCR 31CE1
or
SEC 3 MON OR WIRING FROM L SPLR 1 POS XDCR 31CE1

replace the SEC-3 [1CE3] , AMM 27-94-34-000-001 and AMM 27-94-34-400-001.

(1) If the fault continues:

do a check and repair the wiring of the ANI 2-4 signal from the SEC 3 (1CE3) to the first terminal block COM part or MON part as shown in the maintenance message ASM 279404.

Subtask 27-60-00-740-053-A

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:27:42 UTC