PTT Stuck

TASK 23-12-00-810-858-A
PTT Stuck

1. Possible Causes

SW-RAD PTT, CAPT [11RN]
SW-RAD PTT, F/O [12RN]
SSU-CAPT [100CE1]
SSU-F/O [100CE2]
C/B-FWS/FWC1/SPLY [3WW]
C/B-EIS/FWC2/SPLY [2WW]

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 27-92-41-000-010	Removal of the Radio PTT Switch
AMM 27-92-41-000-802	Removal of the New-Generation Side-Stick Unit
AMM 27-92-41-400-010	Installation of the Radio PTT Switch
AMM 27-92-41-400-802	Installation of the New-Generation Side-Stick Unit
AMM 27-92-41-860-801	Identification of the Side Stick Installed on the Aircraft

3. Fault Confirmation
Subtask 23-12-00-700-052-A

A. Not Applicable

4. Fault Isolation
Subtask 23-12-00-810-121-A

A. Do the steps that follow:
(1) Identification of the side stick installed on aircraft AMM 27-92-41-860-801:
(a) If the side stick assembly is installed:
1 Replace the Push To Talk (PTT) switch on which the fault occurs:

SW-RAD PTT, CAPT [11RN] or SW-RAD PTT, F/O [12RN] AMM 27-92-41-000-010 and AMM 27-92-41-400-010.

(b) If the new-generation side stick-unit is installed:
1 Replace the new-generation side-stick unit on which the fault occurs:

SSU-CAPT [100CE1] or SSU-F/O [100CE2] AMM 27-92-41-000-802 and AMM 27-92-41-400-802.

(2) Do a reset of the FWC:
(a) Open circuit breakers C/B-FWS/FWC1/SPLY [3WW] and C/B-EIS/FWC2/SPLY [2WW] .
(b) Close circuit breakers C/B-FWS/FWC1/SPLY [3WW] and C/B-EIS/FWC2/SPLY [2WW] .

NOTE: Only a FWC reset (or during the transition to flight phases 1 or 10) will clear the COM SINGLE PTT STUCK ECAM alert.

[Rev.8 from Aug 2018] 2026.04.04 04:25:39 UTC