DOC AIRBUS | TSM A320FUnwanted Permanent Idle of the Left Throttle Control Unit for the SEC 1
TASK 27-94-00-810-814-A
Unwanted Permanent Idle of the Left Throttle Control Unit for the SEC 1
1. Possible Causes
2. Job Set-up Information
A. Referenced Information
3. Fault Confirmation
Subtask 27-94-00-860-068-A
Subtask 27-94-00-810-063-A ** ON A/C NOT FOR ALL
[Rev.8 from Aug 2018]
2026.04.04 04:28:12 UTC
Unwanted Permanent Idle of the Left Throttle Control Unit for the SEC 1
1. Possible Causes
2. Job Set-up Information
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| AMM 24-41-00-861-002 | Energize the Aircraft Electrical Circuits from the External Power |
| 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 76-11-19-000-040 | Removal of the Throttle Control Unit |
| AMM 76-11-19-400-040 | Installation of the Throttle Control Unit |
Subtask 27-94-00-860-068-A
A. Job Set-Up
(1) Energize the aircraft electrical circuits AMM 24-41-00-861-002.
(2) On the overhead panel 23VU:
Subtask 27-94-00-700-076-A 4. Fault Isolation(1) Energize the aircraft electrical circuits AMM 24-41-00-861-002.
(2) On the overhead panel 23VU:
- release the FLT CTL/SEC1 pushbutton switch (the OFF legend comes on).
- push the FLT CTL/SEC1 pushbutton switch (the OFF legend goes off).
- put the left throttle lever in TO/GA and MAX REV during 5 seconds.
Subtask 27-94-00-810-063-A ** ON A/C NOT FOR ALL
A. If the BITE test gives the maintenance message:
SEC1 PERMANENT IDLE OF L THROTTLE CTL UNIT 8KS1
Subtask 27-94-00-700-077-A SEC1 PERMANENT IDLE OF L THROTTLE CTL UNIT 8KS1
- replace the SEC-1 [1CE1] , AMM 27-94-34-000-001 and AMM 27-94-34-400-001.
- replace the CTL UNIT-THROTTLE, ENG 1 [8KS1] , AMM 76-11-19-000-040 and AMM 76-11-19-400-040.
B. Do the operational test and the BITE test given in Para. 3.