TSM 27-60-00-810-851-A — Wrong Spoiler Position Indication A320

Wrong Spoiler Position Indication A320

1. Possible Causes:

2. Job Set-up Information

3. Fault Confirmation

SUBTASK 27-60-00-860-138-A

A. Job Set-up

(1) Energize the aircraft electrical circuits Ref. AMM 24-41-00-861-002.

(2) On the panel 23VU, make sure that the FLT CTL/SEC 1 pushbutton switch is pushed (on this pushbutton switch, the OFF and FAULT legends are off).

(3) On the panel 24VU, make sure that the FLT CTL/ SEC 2 and the FLT CTL/SEC3 pushbutton switches are pushed (on these pushbutton switches, the OFF and FAULT legends are off).

(4) On the center pedestal, make sure that the slats and flaps control lever is in the 0 position, and the SPEED BRAKE control lever is set to RET.

(5) Make sure that the two side stick controllers are in the neutral position.

(6) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only) Ref. AMM 31-60-00-860-001.

(7) Pressurize the Green, Blue and Yellow hydraulic systems Ref. AMM 29-23-00-863-001, Ref. AMM 29-10-00-863-003 and Ref. AMM 29-10-00-863-002.

SUBTASK 27-60-00-710-052-A

B. Test

ACTION	RESULT
1.On the center pedestal, on the ECAM control panel:-push the F/CTL pushbutton switch	On the lower ECAM display unit:-the F/CTL page comes into view.-the triangle of a spoiler does not show the retracted position.

SUBTASK 27-60-00-860-139-A

C. Close-up

(1) Depressurize the Green, Blue and Yellow hydraulic systems Ref. AMM 29-23-00-864-001, Ref. AMM 29-10-00-864-003 and Ref. AMM 29-10-00-864-002.

(2) Do the EIS stop procedure Ref. AMM 31-60-00-860-002.

4. Fault Isolation

SUBTASK 27-60-00-810-100-B

A. If the test confirms the fault:

— replace the SEC in relation to the wrong indication Ref. AMM 27-94-34-000-001 and Ref. AMM 27-94-34-400-001.

for spoilers 3 and 4, replace the SEC-1 (1CE1)

for spoiler 5, replace the SEC-2 (1CE2)

for spoilers 1 and 2, replace the SEC-3 (1CE3).

(1) If the fault continues:

— replace the Spoiler Servo Control in relation to the wrong indication.

SERVO CTL-SPLR1, L G (31CE1), SERVO CTL-SPLR1, R G (31CE2), for spoiler 1

SERVO CTL-SPLR2, L Y (31CE3), SERVO CTL-SPLR2, R Y (31CE4), for spoiler 2

SERVO CTL-SPLR3, L B (31CE5), SERVO CTL-SPLR3, R B (31CE6), for spoiler 3

SERVO CTL-SPLR4, L Y (31CE7), SERVO CTL-SPLR4, R Y (31CE8) for spoiler 4

SERVO CTL-SPLR5, L G (31CE9), SERVO CTL-SPLR5, R G (31CE10) for spoiler 5

Ref. AMM 27-64-51-000-004 and Ref. AMM 27-64-51-400-004.

(2) If the fault continues:

— do a check and repair the wiring of the LVDT POS Signal from the spoiler servocontrol to the SEC COM and MON parts Ref. ASM 27-94-02, Ref. ASM 27-94-04.

5. Close-up

SUBTASK 27-60-00-710-053-A

A. Do the test given in Para 3.