SFCC 1 FLP 1 No ADIRU 1 Data or SFCC 2 FLP 2 No ADIRU 1 Data

TASK 27-51-00-810-832-A
SFCC 1 FLP 1 No ADIRU 1 Data or SFCC 2 FLP 2 No ADIRU 1 Data

1. Possible Causes

SLAT/FLAP CONTR.COMP. [21CV]
SLAT/FLAP CONTR.COMP. [22CV]
ADIRU-1 [1FP1]
aircraft wiring

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
ASM 275108
AMM 27-51-34-000-001	Removal of the SFCC
AMM 27-51-34-400-001	Installation of the SFCC
AMM 31-32-00-860-006	Procedure to Get Access to the SYSTEM REPORT/TEST F/CTL Page
AMM 34-12-34-000-001	Removal of the ADIRU
AMM 34-12-34-400-001	Installation of the ADIRU

3. Fault Confirmation
Subtask 27-51-00-740-064-A

A. Test
(1) At the ADIRU 1 CDU, set the OFF/NAV/ATT selector switch to NAV.
(2) At the MCDU, set the MENU MODE and get access to the SYSTEM REPORT/TEST F/CTL page AMM 31-32-00-860-006.
(a) Get access to the SFCC 1 (2) SYSTEM DATA FLAP page and push the line key adjacent to the ARINC 429 INPUT STATUS indication:

if the ARINC input status shows ADIRU 1 LABEL *** NO DATA, do the Fault Isolation Procedure.

4. Fault Isolation
Subtask 27-51-00-810-081-A

A. Procedure
(1) Interchange SFCC 1 with SFCC 2 AMM 27-51-34-000-001 AMM 27-51-34-400-001.
(a) Do the test given in Para. 3.A..
(b) If the fault does not move to the other SFCC:

Install the SFCCs in their initial positions.
Do step (2).

(c) If the fault moves with SFCC 1(2):
1 Install the serviceable SFCC in its initial position.
2 Replace the defective SLAT/FLAP CONTR.COMP. [21CV] or SLAT/FLAP CONTR.COMP. [22CV] .
3 Do the test given in Para. 3.A.
(2) If the fault continues, replace the ADIRU-1 [1FP1]
AMM 34-12-34-000-001 and AMM 34-12-34-400-001.
(a) Do the test given in Para. 3.A.

If the fault continues, do the next step.

(3) Do a check and repair the aircraft wiring ASM 275108.
(a) Do the test given in Para. 3.A.

[Rev.8 from Aug 2018] 2026.04.04 04:27:39 UTC