Flap Attachment ECAM Warning (FLT/CTL - FLAP ATTACH SENSOR)

TASK 27-51-00-810-853-A
Flap Attachment ECAM Warning (FLT/CTL - FLAP ATTACH SENSOR)

1. Possible Causes

SLAT/FLAP CONTR.COMP. [21CV]
SLAT/FLAP CONTR.COMP. [22CV]
LGCIU-1 [5GA1]
LGCIU-2 [5GA2]
SENSOR-L FLAP ATTACHMENT FAILURE DETECTION [37CV]
SENSOR-L FLAP ATTACHMENT FAILURE DETECTION [39CV]
SENSOR-R FLAP ATTACHMENT FAILURE DETECTION [38CV]
SENSOR-R FLAP ATTACHMENT FAILURE DETECTION [40CV]

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
TSM TASK 27-51-00-810-806-A	Data Fault Between SFCC 1 and SFCC 2. Loss of Cross-computer Link or Faulty Data
TSM TASK 27-51-00-810-831-A	SFCC 1 No LGCIU 1 Data or SFCC 2 No LGCIU 2 Data
TSM TASK 32-31-00-810-828-A	Left Flap Disconnect Proximity Sensor
TSM TASK 32-31-00-810-829-A	Right Flap Disconnect Proximity Sensor
AMM 27-51-00-740-002	BITE Test of the Slat and Flap Control Computers (Flap System)
AMM 32-69-00-740-001	BITE Check of Landing-Gear Control Interface-Unit (LGCIU) With Use of MCDU to Ensure that Continuous BITE is Operative

3. Fault Confirmation
Subtask 27-51-00-710-080-A

A. Test
(1) Do a BITE test of the SLAT/FLAP CONTR.COMP. [21CV] or SLAT/FLAP CONTR.COMP. [22CV] , identified on the Post Flight Report (PFR) AMM 27-51-00-740-002 and record each fault related to the flap attachment, for example:

SFCC 1 (2) 21CV (22CV) (SFCC fault)
NO LGCIU 1 (2) DATA / CHECK WIRING TO FLP 1 (2) (ARINC 429 Input fault)
FLP 1 (2) NO SFCC 2 (1) DATA / CHECK WIRING & SFCC 2 (1) (ARINC 429 X-computer data link fault).

(2) Do a BITE test of the LGCIU-1 [5GA1] or LGCIU-2 [5GA2] identified on the PFR AMM 32-69-00-740-001 and record each fault related to the flap attachment, for example:

L FLP DISC PROX SNSR SENSOR-L FLAP ATTACHMENT FAILURE DETECTION [37CV] or SENSOR-L FLAP ATTACHMENT FAILURE DETECTION [39CV] (LH flap attachment sensor 1 or 2 fault)
R FLP DISC PROX SNSR SENSOR-R FLAP ATTACHMENT FAILURE DETECTION [38CV] or SENSOR-R FLAP ATTACHMENT FAILURE DETECTION [40CV] (RH flap attachment sensor 1 or 2 fault)

(3) Do the fault isolation procedure given in Para. 4.

NOTE: The ECAM Warning message "FLT/CTL - FLAP ATTACH SENSOR" is only shown when there are two faults in the flap attachment monitoring system. One fault in System 1 and one fault in System 2. The ECAM warning is not shown if the two faults are a failure of Sensor 1 and Sensor 2 on the same interconnecting strut. This condition is a MISADJUSTMENT fault which does not give an ECAM warning.

4. Fault Isolation
Subtask 27-51-00-810-105-A

A. Procedure
(1) For SFCC faults do the TSM Task (Ref. TSM TASK 27-51-00-810-806).
(2) For LGCIU faults do the TSM Task (Ref. TSM TASK 27-51-00-810-831).
(3) For LH flap attachment sensor faults do the TSM Task (Ref. TSM TASK 32-31-00-810-828).
(4) For RH flap attachment sensor faults do the TSM Task (Ref. TSM TASK 32-31-00-810-829).

[Rev.8 from Aug 2018] 2026.04.04 04:27:40 UTC