DOC AIRBUS | AMM A320FOperational Test of the Pivoting Door Deploy Switch [CFMB]
TASK 78-31-17-710-002-A
Operational Test of the Pivoting Door Deploy Switch
1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
C. Referenced Information
3. Job Set-up
Subtask 78-31-17-941-065-A ** ON A/C NOT FOR ALL
Subtask 78-31-17-710-058-A ** ON A/C NOT FOR ALL
Subtask 78-31-17-440-059-A ** ON A/C NOT FOR ALL Subtask 78-31-17-410-071-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 03:24:11 UTC
Operational Test of the Pivoting Door Deploy Switch
1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| FOR [1000EM1] (ENGINE-1) | |
| 437AL, 438AR | |
| FOR [1000EM2] (ENGINE-2) | |
| 447AL, 448AR | |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 71-13-00-010-040-B | Opening of the Fan Cowl Doors |
| TASK 71-13-00-410-040-B | Closing of the Fan Cowl Doors |
| TASK 78-30-00-081-041-B | Make the Thrust Reverser Serviceable after Maintenance |
| TASK 78-30-00-481-041-B | Make the Thrust Reverser Unserviceable for Maintenance |
| TASK 78-31-17-000-001-A | Removal of the Blocker Door Deploy-Switch |
| TASK 78-31-17-400-001-A | Installation of the Blocker Door Deploy-Switch |
Blocker Door Deploy SwitchSubtask 78-31-17-941-065-A ** ON A/C NOT FOR ALL
A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).
Subtask 78-31-17-010-075-A ** ON A/C NOT FOR ALL (1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).
B. Get Access
(1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Put the ACCESS PLATFORM 1M(3 FT) in position.
Subtask 78-31-17-040-065-A ** ON A/C NOT FOR ALL 4. Procedure(1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Put the ACCESS PLATFORM 1M(3 FT) in position.
Subtask 78-31-17-710-058-A ** ON A/C NOT FOR ALL
A. Operational Test of the Pivoting Door Deploy Switch
(1) Method 1:
(a) Locate the beam harness (25) on the forward bulkhead of the thrust reverser half door.
(b) Disconnect the plug F1 (E1) from the receptacle F2 (E2) (30) on the beam harness (25).
1 Set the functional control of the OHMMETER MULTIRANGE to OHMS.
2 Set the range control to the R x 1 ohms range.
3 Set the OHMMETER MULTIRANGE to zero.
(d) Connect the leads of the ohmmeter.
a Manually open the upper and lower blocker doors to the fully deployed position. The dial on the OHMMETER MULTIRANGE will move to zero.
b While moving the upper and lower deploy switch lever laterally make sure that the OHMMETER MULTIRANGE remains at < 1 ohm. If the ohmmeter does not remain at < 1 ohm replace the deploy switch leverCMM 783236 .
c Manually close the upper blocker door to the fully stowed position. At the beginning of the blocker door movement, the dial on the OHMMETER MULTIRANGE will move to infinity.
d Manually open the upper blocker door to the fully deployed position. The dial on the OHMMETER MULTIRANGE will move to zero.
e Manually close the lower blocker door to the fully stowed position. At the beginning of the blocker door movement, the dial on the OHMMETER MULTIRANGE will move to infinity.
f Manually close the upper blocker door to the fully stowed position.
(e) Connect the leads of the OHMMETER MULTIRANGE to pins 4 and 5 of the receptacle F2 (E2) (30). Check that the dial on the ohmmeter is at infinity.
1 Manually open the upper and lower blocker doors to the fully deployed position. The dial on the OHMMETER MULTIRANGE will move to zero.
2 While moving the upper and lower deploy switch lever laterally make sure that the OHMMETER MULTIRANGE remains at < 1 ohm. If the ohmmeter does not remain at < 1 ohm replace the deploy switch leverCMM 783236 .
3 Manually close the upper blocker door to the fully stowed position. At the beginning of the blocker door movement, the dial on the OHMMETER MULTIRANGE will move to infinity.
4 Manually open the upper blocker door to the fully deployed position. The dial on the OHMMETER MULTIRANGE will move to zero.
5 Manually close the lower blocker door to the fully stowed position. At the beginning of the blocker door movement, the dial on the OHMMETER MULTIRANGE will move to infinity.
6 Manually close the upper blocker door to the fully stowed position.
(f) If the switch does not operate correctly, replace the switch (15) (Ref. AMM TASK 78-31-17-000-001) and (Ref. AMM TASK 78-31-17-400-001).
(g) If the switch operates correctly, connect the plug F1 on the receptacle F2 (30) on the beam harness (25).
Subtask 78-31-17-710-059-A ** ON A/C NOT FOR ALL (1) Method 1:
(a) Locate the beam harness (25) on the forward bulkhead of the thrust reverser half door.
(b) Disconnect the plug F1 (E1) from the receptacle F2 (E2) (30) on the beam harness (25).
NOTE: The Plug F1 and Receptacle F2 are on the left half door. Plug E1 and Receptacle E2 are on the right half door.
(c) Prepare the OHMMETER MULTIRANGE for the test: 1 Set the functional control of the OHMMETER MULTIRANGE to OHMS.
2 Set the range control to the R x 1 ohms range.
3 Set the OHMMETER MULTIRANGE to zero.
(d) Connect the leads of the ohmmeter.
CAUTION:
DO NOT INSERT AN OVERSIZED TEST PROBE INTO A CONNECTOR SOCKET. DO NOT LET THE TEST LEAD HANG FROM A CONNECTOR SOCKET. THE CONNECTOR MAY BE DAMAGED OR THE PIN/SOCKET MAY BE BENT.
1 Connect the leads of the OHMMETER MULTIRANGE to pins 2 and 3 of the receptacle F2 (E2) (30). Check that the dial on the ohmmeter is at infinity. a Manually open the upper and lower blocker doors to the fully deployed position. The dial on the OHMMETER MULTIRANGE will move to zero.
b While moving the upper and lower deploy switch lever laterally make sure that the OHMMETER MULTIRANGE remains at < 1 ohm. If the ohmmeter does not remain at < 1 ohm replace the deploy switch lever
c Manually close the upper blocker door to the fully stowed position. At the beginning of the blocker door movement, the dial on the OHMMETER MULTIRANGE will move to infinity.
d Manually open the upper blocker door to the fully deployed position. The dial on the OHMMETER MULTIRANGE will move to zero.
e Manually close the lower blocker door to the fully stowed position. At the beginning of the blocker door movement, the dial on the OHMMETER MULTIRANGE will move to infinity.
f Manually close the upper blocker door to the fully stowed position.
(e) Connect the leads of the OHMMETER MULTIRANGE to pins 4 and 5 of the receptacle F2 (E2) (30). Check that the dial on the ohmmeter is at infinity.
1 Manually open the upper and lower blocker doors to the fully deployed position. The dial on the OHMMETER MULTIRANGE will move to zero.
2 While moving the upper and lower deploy switch lever laterally make sure that the OHMMETER MULTIRANGE remains at < 1 ohm. If the ohmmeter does not remain at < 1 ohm replace the deploy switch lever
3 Manually close the upper blocker door to the fully stowed position. At the beginning of the blocker door movement, the dial on the OHMMETER MULTIRANGE will move to infinity.
4 Manually open the upper blocker door to the fully deployed position. The dial on the OHMMETER MULTIRANGE will move to zero.
5 Manually close the lower blocker door to the fully stowed position. At the beginning of the blocker door movement, the dial on the OHMMETER MULTIRANGE will move to infinity.
6 Manually close the upper blocker door to the fully stowed position.
(f) If the switch does not operate correctly, replace the switch (15) (Ref. AMM TASK 78-31-17-000-001) and (Ref. AMM TASK 78-31-17-400-001).
(g) If the switch operates correctly, connect the plug F1 on the receptacle F2 (30) on the beam harness (25).
B. Operational Test of the Pivoting Door Deploy Switch
(1) Method 2:
(b) Remove the deploy switch access door (5).
(c) Disconnect the plug on the beam harness (25) from the receptacle (20) on the deploy switch (15).
(d) Prepare the OHMMETER MULTIRANGE for the test:
1 Set the functional control of the OHMMETER MULTIRANGE to OHMS.
2 Set the range control to the R x 1 ohms range.
3 Set the OHMMETER MULTIRANGE to zero.
(e) Connect the leads of the ohmmeter.
a Manually open the upper and lower blocker doors to the fully deployed position. The dial on the OHMMETER MULTIRANGE will move to zero.
b Manually close the upper blocker door to the fully stowed position. At the beginning of the blocker door movement, the dial on the OHMMETER MULTIRANGE will move to infinity.
c Manually open the upper blocker door to the fully deployed position. The dial on the OHMMETER MULTIRANGE will move to zero.
d Manually close the lower blocker door to the fully stowed position. At the beginning of the blocker door movement, the dial on the OHMMETER MULTIRANGE will move to infinity.
e Manually close the upper blocker door to the fully stowed position.
(f) Connect the leads of the OHMMETER MULTIRANGE to pins 4 and 5 of the receptacle F2 (E2) (30). Check that the dial on the ohmmeter is at infinity.
1 Manually open the upper and lower blocker doors to the fully deployed position. The dial on the OHMMETER MULTIRANGE will move to zero.
2 Manually close the upper blocker door to the fully stowed position. At the beginning of the blocker door movement, the dial on the OHMMETER MULTIRANGE will move to infinity.
3 Manually open the upper blocker door to the fully deployed position. The dial on the OHMMETER MULTIRANGE will move to zero.
4 Manually close the lower blocker door to the fully stowed position. At the beginning of the blocker door movement, the dial on the OHMMETER MULTIRANGE will move to infinity.
5 Manually close the upper blocker door to the fully stowed position.
(g) If the switch does not operate correctly, replace the switch (15) (Ref. AMM TASK 78-31-17-000-001) and (Ref. AMM TASK 78-31-17-400-001).
(h) If the switch operates correctly, connect the plug on the beam harness (25) on the receptacle (20) on the deploy switch (15).
(i) Install the deploy switch access door (5) on the blocker door with the three screws (10).
(j) TORQUE the screws (10) to between 44 and 35 lbf.in (0.50 and 0.40 m.daN )
.
5. Close-up(1) Method 2:
NOTE: If you use method 2 you do not have to open the fan cowl doors.
(a) Remove the 3 screws (10) that attach the deploy switch access door (5). (b) Remove the deploy switch access door (5).
(c) Disconnect the plug on the beam harness (25) from the receptacle (20) on the deploy switch (15).
(d) Prepare the OHMMETER MULTIRANGE for the test:
1 Set the functional control of the OHMMETER MULTIRANGE to OHMS.
2 Set the range control to the R x 1 ohms range.
3 Set the OHMMETER MULTIRANGE to zero.
(e) Connect the leads of the ohmmeter.
CAUTION:
DO NOT INSERT AN OVERSIZED TEST PROBE INTO A CONNECTOR SOCKET. DO NOT LET THE TEST LEAD HANG FROM A CONNECTOR SOCKET. THE CONNECTOR MAY BE DAMAGED OR THE PIN/SOCKET MAY BE BENT.
1 Connect the leads of the OHMMETER MULTIRANGE to pins 2 and 3 of the receptacle F2 (E2) (30). Check that the dial on the ohmmeter is at infinity. a Manually open the upper and lower blocker doors to the fully deployed position. The dial on the OHMMETER MULTIRANGE will move to zero.
b Manually close the upper blocker door to the fully stowed position. At the beginning of the blocker door movement, the dial on the OHMMETER MULTIRANGE will move to infinity.
c Manually open the upper blocker door to the fully deployed position. The dial on the OHMMETER MULTIRANGE will move to zero.
d Manually close the lower blocker door to the fully stowed position. At the beginning of the blocker door movement, the dial on the OHMMETER MULTIRANGE will move to infinity.
e Manually close the upper blocker door to the fully stowed position.
(f) Connect the leads of the OHMMETER MULTIRANGE to pins 4 and 5 of the receptacle F2 (E2) (30). Check that the dial on the ohmmeter is at infinity.
1 Manually open the upper and lower blocker doors to the fully deployed position. The dial on the OHMMETER MULTIRANGE will move to zero.
2 Manually close the upper blocker door to the fully stowed position. At the beginning of the blocker door movement, the dial on the OHMMETER MULTIRANGE will move to infinity.
3 Manually open the upper blocker door to the fully deployed position. The dial on the OHMMETER MULTIRANGE will move to zero.
4 Manually close the lower blocker door to the fully stowed position. At the beginning of the blocker door movement, the dial on the OHMMETER MULTIRANGE will move to infinity.
5 Manually close the upper blocker door to the fully stowed position.
(g) If the switch does not operate correctly, replace the switch (15) (Ref. AMM TASK 78-31-17-000-001) and (Ref. AMM TASK 78-31-17-400-001).
(h) If the switch operates correctly, connect the plug on the beam harness (25) on the receptacle (20) on the deploy switch (15).
(i) Install the deploy switch access door (5) on the blocker door with the three screws (10).
(j) TORQUE the screws (10) to between 44 and 35 lbf.in (0.50 and 0.40 m.daN )
. Subtask 78-31-17-440-059-A ** ON A/C NOT FOR ALL Subtask 78-31-17-410-071-A ** ON A/C NOT FOR ALL
B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the access platform(s).
(3) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(4) Remove the WARNING NOTICE(S).
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the access platform(s).
(3) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(4) Remove the WARNING NOTICE(S).