Operational Test of the Windshear Function A320
WARNING: MAKE SURE THAT ALL THE CIRCUITS IN MAINTENANCE ARE ISOLATED BEFORE YOU SUPPLY ELECTRICAL POWER TO THE AIRCRAFT. UNWANTED ELECTRICAL POWER CAN BE DANGEROUS.
1.Reason for the Job
Self explanatory
2. Job Set-up Information
A. Work Zones and Access Panels
| ZONE/ACCESS | ZONE DESCRIPTION |
| 210 | CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD |
B. 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. 31-32-00-860-001-A | Procedure to Get Access to the SYSTEM REPORT/TEST Menu Page |
| Ref. 31-60-00-860-001-A | EIS Start Procedure |
| Ref. 31-60-00-860-002-A | EIS Stop Procedure |
3. Job Set-up
SUBTASK 22-60-00-860-056-A
A. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits Ref. AMM TASK 24-41-00-861-002.
(2) Make sure that the ventilation of the electronics racks operates correctly.
(3) On the overhead panel, on the ADIRS CDU:
— set the OFF/NAV/ATT selector switches to NAV.
(4) On the center pedestal, on the SWITCHING panel 8VU:
— set the AIR DATA switch to CAPT/3, F/0/3 then NORM position (this action is mandatory to do the test correctly).
(5) On the overhead panel, on the FLT CTL panels 23VU and 24VU:
— make sure that the FAC 1 and FAC 2 pushbutton switches are pushed (the FAULT and OFF legends are off).
(6) Do the EIS start procedure Ref. AMM TASK 31-60-00-860-001.
4.Procedure
SUBTASK 22-60-00-710-053-A
A. Operational Test of the Windshear Function
Ref. Fig. Procedure Test
NOTE: You can stop the windshear test when it is necessary. To stop the test, push the line key adjacent to the END OF TEST indication, (the AFS MAIN MENU page comes into view).
NOTE: To engage or disengage the FAC 1(2), push the FAC1(2) pushbutton switch on the panel 23VU(24VU).
ACTION RESULT 1.On the center pedestal, on the MCDU: -get the SYSTEM REPORT/TEST page Ref. AMM TASK 31-32-00-860-001. The SYSTEM REPORT/TEST page comes into view. 2.On the SYSTEM REPORT/TEST page: -push the line key adjacent to the AFS indication. The AFS MAIN MENU page comes into view. 3.On the AFS MAIN MENU page: -push the line key adjacent to the WINDSHEAR TEST indication. The AFS/WINDSHEAR TEST-1 page comes into view. 4.On the AFS/WINDSHEAR TEST-1 page:-obey the instructions given on the MCDU.NOTE:Make sure that you do this step in less than 2.5 minutes. If not, start the windshear test again. -then, push the NEXT PAGE function key. The AFS/WINDSHEAR TEST-2 page comes into view. 5.On the AFS/WINDSHEAR TEST-2 page:-obey the instructions given on the MCDU. -then, push the line key adjacent to the YES indication if the result of the visual and aural checks are correct. The AFS/WINDSHEAR TEST-3 page comes into view. 6.On the AFS/WINDSHEAR TEST-3 page:-obey the instructions given on the MCDU.NOTE:When the predictive windshear function is active:-on the EWD, make sure that the REAC W/S DET FAULT message (and not the WINDSHEAR DET FAULT message) is shown.-On the STATUS page, make sure that the REAC W/S DET message (and not the WINDSHEAR DET FAULT message) is shown. -then, push the line key adjacent to the YES indication if the result of the visual checks are correct. The AFS/WINDSHEAR TEST-4 page comes into view. 7.On the AFS/WINDSHEAR TEST-4 page:-obey the instructions given on the MCDU. -then, push the NEXT PAGE function key. The AFS/WINDSHEAR TEST-5 page comes into view. 8.On the AFS/WINDSHEAR TEST-5 page:-obey the instructions given on the MCDU. -then, push the line key adjacent to the YES indication if the result of the visual and aural checks are correct. The AFS/WINDSHEAR TEST-6 page comes into view. 9.On the AFS/WINDSHEAR TEST-6 page:-obey the instructions given on the MCDU.NOTE:When the predictive windshear function is active:-on the EWD, make sure that the REAC W/S DET FAULT message (and not the WINDSHEAR DET FAULT message) is shown.-On the STATUS page, make sure that the REAC W/S DET message (and not the WINDSHEAR DET FAULT message) is shown. -then, push the line key adjacent to the YES indication if the result of the visual checks are correct. The AFS/WINDSHEAR TEST-7 page comes into view. 10.On the AFS/WINDSHEAR TEST-7 page: -obey the instructions given on the MCDU. The WINDSHEAR TEST OK indication comes into view. 11.On the MCDU:-push the line key adjacent to the RETURN indication.
5. Close-up
SUBTASK 22-60-00-860-057-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) On the overhead panel, on the ADIRS CDU, set the OFF/NAV/ATT selector switches to OFF.
(3) Do the EIS stop procedure Ref. AMM TASK 31-60-00-860-002.
(4) De-energize the aircraft electrical circuits Ref. AMM TASK 24-41-00-862-002.
