W DOC AIRBUS | TSM A320F

Loss of the Pitch Signal on the F/O Side Stick for the SEC 1


TASK 27-94-00-810-804-A
Loss of the Pitch Signal on the F/O Side Stick for the SEC 1


1. Possible Causes
  • SSTU-PITCH CTL, F/O [4CE4]
  • SEC-1 [1CE1]
  • wiring from the SEC 1 (1CE1) to the SSTU (4CE4)
2. Job Set-up Information
 A. Referenced Information
REFERENCE
DESIGNATION
TSM TASK 27-94-00-810-909-A
Loss of the Pitch Signal on the F/O Side Stick for the SEC 1 (New-Generation Side-Stick Unit)
ASM 279215
AMM 27-92-41-000-002
Removal of the Transducer Units
AMM 27-92-41-400-002
Installation of the Transducer Units
AMM 27-92-41-860-801
Identification of the Side Stick Installed on the Aircraft
AMM 27-94-34-000-001
Removal of the SEC
AMM 27-94-34-400-001
Installation of the SEC
AMM 27-96-00-710-020
Operational Test of the Side Stick Assembly (Activation for the BITE Test)
AMM 27-96-00-740-001
BITE Test of the EFCS (Ground Scanning)
3. Fault Confirmation
Subtask 27-94-00-860-083-A
A. Side Stick Identification
   (1) Do the identification of the side stick installed on the aircraft AMM 27-92-41-860-801:
     (a) If a new-generation side stick is installed on the aircraft, refer to the trouble shooting procedure (Ref. TSM TASK 27-94-00-810-909).
     (b) If the side stick installed on the aircraft is not a new-generation side stick, continue this procedure.
Subtask 27-94-00-700-056-A
B. Test
   (1) Do the operational test of the side stick assembly (activation for the BITE test) AMM 27-96-00-710-020.
   (2) Do the BITE test of the EFCS (Ground Scanning) AMM 27-96-00-740-001.
4. Fault Isolation
Subtask 27-94-00-810-053-B
A. If the BITE test gives the maintenance message:
SEC1 OR INPUT OF F/O PITCH CTL SSTU 4CE4
   (1) If the fault continues:
   (2) If the fault continues:
  • do a check and repair the wiring from the SEC 1 (1CE1) to the SSTU (4CE4), ASM 279215.
Subtask 27-94-00-700-057-A
B. Do the operational test and the BITE test given in Para. 3.
[Rev.8 from Aug 2018] 2026.04.04 04:28:12 UTC