System Test of the Air Data Reference (ADR) A320
1.Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
| No specific | AR | ACCESS PLATFORM 1M(3 FT) |
B. Work Zones and Access Panels
| ZONE/ACCESS | ZONE DESCRIPTION |
| 210 | CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD |
| 822 |
C. Referenced Information
| REFERENCE | DESIGNATION |
| Ref. 24-41-00-861-002-A | Energize the Aircraft Electrical Circuits from the External Power |
| Ref. 24-41-00-861-002-A01 | Energize the Aircraft Electrical Circuits from the APU |
| Ref. 24-41-00-861-002-A02 | Energize the Aircraft Electrical Circuits from Engine 1(2) |
| Ref. 24-41-00-862-002-A | De-energize the Aircraft Electrical Circuits Supplied from the External Power |
| Ref. 24-41-00-862-002-A01 | De-energize the Aircraft Electrical Circuits Supplied from the APU |
| Ref. 24-41-00-862-002-A02 | De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2) |
| Ref. 31-32-00-860-010-A | Procedure to Get Access to the SYSTEM REPORT/TEST NAV Page |
| Ref. 34-10-00-860-002-A | ADIRS Start Procedure |
| Ref. 34-10-00-860-005-A | ADIRS Stop Procedure |
3. Job Set-up
SUBTASK 34-13-00-860-079-A
A. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits Ref. AMM TASK 24-41-00-861-002.
(2) Do the ADIRS start procedure Ref. AMM TASK 34-10-00-860-002.
(3) On the center pedestal, on the MCDU, get the SYSTEM REPORT/TEST/NAV page Ref. AMM TASK 31-32-00-860-010.
(4) On the overhead panel, on the ADIRS CDU, make sure that the OFF legend of the ADR pushbutton switches is off).
SUBTASK 34-13-00-010-056-A
B. Get Access
(1) Put the ACCESS PLATFORM 1M(3 FT) in position at the access door 822.
(2) Open the access door 822.
(3) On the battery power center 105VU:
— Loosen the two screws and remove the protective cover.
SUBTASK 34-13-00-875-067-A
C. Make sure that this(these) circuit breaker(s) is(are) closed:
| PANEL | DESIGNATION | FIN | LOCATION |
| 49VU | AUTO FLT/FCU/1 | 9CA1 | B05 |
| 49VU | L/G/LGCIU/SYS1/NORM | 1GA | C09 |
| 49VU | NAV PROBES/ADIRU3/PWR/SWTG | 8FP | F09 |
| 49VU | NAV PROBES/ADIRU 1/AND AOA 1/26VAC | 5FP1 | F07 |
| 49VU | NAV PROBES/ADIRU1/115VAC | 4FP1 | F06 |
| 105VU | ADIRS/ADIRU1/28VDC | 6FP1 | C02 |
| 121VU | AUTO FLT/FCU/2 | 9CA2 | M21 |
| 121VU | ADIRS/ADIRU/2PWR/SHED | 10FP | N10 |
| 121VU | ADIRS/ADIRU/3PWR/SWTG | 9FP | N09 |
| 121VU | ADIRS/ADIRU/2/26VAC AND AOA | 5FP2 | N08 |
| 121VU | ADIRS/ADIRU/3/26VAC AND AOA | 5FP3 | N07 |
| 121VU | ADIRS/ADIRU/2/115VAC | 4FP2 | N06 |
| 121VU | ADIRS/ADIRU/3/115VAC | 4FP3 | N05 |
| 121VU | ADIRS/ADIRU/2/28VDC | 6FP2 | N04 |
| 121VU | ADIRS/ADIRU/3/28VDC | 6FP3 | N03 |
| 121VU | HYDRAULIC/LGCIU/SYS2 | 2GA | Q35 |
| 121VU | HYDRAULIC/LGCIU/SYS1/GRND SPLY | 52GA | Q34 |
4. Procedure
SUBTASK 34-13-00-740-051-B
A. System Test of the Air Data Reference (ADR)
NOTE:
The actions and the results of this procedure occur on the MCDU that you use.
It is not necessary to do an IR alignment procedure before you start the system test of the ADR.
ACTION RESULT 1.Push the line select key adjacent to the ADR 1 (ADR 2, ADR 3) indication. The ADR 1 (ADR 2, ADR 3) page comes into view. 2.Push the line select key adjacent to the SYSTEM TEST indication. The TEST IN PROGRESS indication comes into view.At the end of the test, the TEST OK indication comes into view. 3.Push the line select key adjacent to the RETURN indication. The test procedure stops.
5. Close-up
SUBTASK 34-13-00-860-080-A
A. Put the aircraft back to its initial configuration.
(1) On the MCDU, push the line select key adjacent to the RETURN indication until the CFDS menu page comes into view.
(2) Do the ADIRS stop procedure Ref. AMM TASK 34-10-00-860-005.
(3) De-energize the aircraft electrical circuits Ref. AMM TASK 24-41-00-862-002.
SUBTASK 34-13-00-410-056-A
B. Close Access
(1) Install the protective cover on the battery power center 105VU.
(2) Tighten the two screws.
(3) Close the access door 822.
(4) Remove the access platform(s).
