DOC AIRBUS | AMM A320FOperational Test of the LAND CAT III Capability
TASK 22-97-00-710-001-A
Operational Test of the LAND CAT III Capability
To make sure that the APPR mode operates correctly and to put the aircraft back to CAT III capability.
A. Work Zones and Access Panels
B. Referenced Information
3. Job Set-up
Subtask 22-97-00-860-051-A
Subtask 22-97-00-710-051-D
Subtask 22-97-00-860-050-A
[Rev.10 from 2021]
2026.04.01 04:13:07 UTC
Operational Test of the LAND CAT III Capability
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.
WARNING:
MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROLS SURFACES ARE CLEAR. MOVEMENT OF FLIGHT CONTROLS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.
ZONE: 210
1. Reason for the JobTo make sure that the APPR mode operates correctly and to put the aircraft back to CAT III capability.
NOTE: The purpose of the Land CAT III test is to check the aircraft capability to perform a CAT III DUAL automatic landing.
2. Job Set-up InformationA. Work Zones and Access Panels
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 210 | CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 24-41-00-861-002-A | Energize the Aircraft Electrical Circuits from the External Power |
| TASK 24-41-00-861-002-A-01 | Energize the Aircraft Electrical Circuits from the APU |
| TASK 24-41-00-861-002-A-02 | Energize the Aircraft Electrical Circuits from Engine 1(2) |
| TASK 24-41-00-862-002-A | De-energize the Aircraft Electrical Circuits Supplied from the External Power |
| TASK 24-41-00-862-002-A-01 | De-energize the Aircraft Electrical Circuits Supplied from the APU |
| TASK 24-41-00-862-002-A-02 | De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2) |
| TASK 29-10-00-863-003-A | Pressurize the Blue Hydraulic System with a Hydraulic Ground Power-Cart |
| TASK 29-10-00-863-003-A-01 | Pressurize the Blue Hydraulic System with the Blue Electric Pump |
| TASK 29-10-00-864-003-A | Depressurize the Blue Hydraulic System |
| TASK 29-23-00-863-001-A | Pressurize the Green Hydraulic System from the Yellow Hydraulic System through the PTU with the Electric Pump |
| TASK 29-23-00-864-001-A | Depressurize the Green and Yellow Hydraulic Systems after Operation of the PTU |
| TASK 31-32-00-860-001-A | Procedure to Get Access to the SYSTEM REPORT/TEST Menu Page |
| TASK 31-60-00-860-001-A | EIS Start Procedure |
| TASK 31-60-00-860-002-A | EIS Stop Procedure |
| TASK 34-10-00-860-004-A | Inertial Reference (IR) Alignment-Procedure |
| TASK 34-10-00-860-004-A-01 | Automatic Inertial Reference (IR) Alignment-Procedure |
| TASK 34-10-00-860-004-A-02 | Inertial Reference (IR) Alignment-Procedure to do a Check of the Links between each Flight Management and Guidance Computer (FMGC) and the three Air Data/Inertial Reference Units (ADIRUs) |
| TASK 34-10-00-860-005-A | ADIRS Stop Procedure |
Subtask 22-97-00-860-051-A
A. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(2) Do the EIS start procedure
(Ref. AMM TASK 31-60-00-860-001).
(3) Align the three ADIRS
(Ref. AMM TASK 34-10-00-860-004).
(4) Pressurize the aircraft hydraulic systems
(Ref. AMM TASK 29-23-00-863-001)
(Ref. AMM TASK 29-10-00-863-003).
(6) On the panel 402VU, make sure that the A/SKID & NOSE WHEEL switch is at ON.
(7) On one MCDU:
(a) Get the SYSTEM REPORT/TEST page
(Ref. AMM TASK 31-32-00-860-001).
(b) Push the line key adjacent to the AFS indication.
Subtask 22-97-00-865-050-A (1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(2) Do the EIS start procedure
(Ref. AMM TASK 31-60-00-860-001).
(3) Align the three ADIRS
(Ref. AMM TASK 34-10-00-860-004).
(4) Pressurize the aircraft hydraulic systems
(Ref. AMM TASK 29-23-00-863-001)
(Ref. AMM TASK 29-10-00-863-003).
NOTE: You must pressurize the three hydraulic systems:
(5) On the maintenance panel 50VU, make sure that the ENG/FADEC GND PWR 1 and 2 pushbutton switches are off. - to make sure that, when the test is completed, the system has 98% operational capability.
(6) On the panel 402VU, make sure that the A/SKID & NOSE WHEEL switch is at ON.
(7) On one MCDU:
(a) Get the SYSTEM REPORT/TEST page
(Ref. AMM TASK 31-32-00-860-001).
(b) Push the line key adjacent to the AFS indication.
B. Make sure that this(these) circuit breaker(s) is(are) closed:
4. Procedure| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | AUTO FLT/FCU/1 | 9CA1 | B05 |
| 49VU | AUTO FLT/FMGC/1 | 10CA1 | B02 |
| 49VU | AUTO FLT/MCDU/1 | 11CA1 | B01 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | AUTO FLT/FCU/1 | 9CA1 | H11 |
| 49VU | AUTO FLT/FMGC/1 | 10CA1 | H08 |
| 49VU | AUTO FLT/MCDU/1 | 11CA1 | H07 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | AUTO FLT/RUDDER/ARTF/FEEL | 14CA | N17 |
| 121VU | AUTO FLT/STICK/LOCK | 13CA | N16 |
| ** ON A/C ALL | |||
| 121VU | AUTO FLT/FCU/2 | 9CA2 | M21 |
| 121VU | AUTO FLT/FMGC/2 | 10CA2 | M17 |
| 121VU | AUTO FLT/MCDU/2 | 11CA2 | N20 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | AUTO FLT/RUDDER/ARTF/FEEL | 14CA | N19 |
| 121VU | AUTO FLT/STICK/LOCK | 13CA | N18 |
Subtask 22-97-00-710-051-D
A. Do this test:
5. Close-upNOTE: The automatic landing capability can be deduced from these ECAM STATUS pages:
| INOP indication | Automatic Landing Capability |
|---|---|
| CAT III DUAL | CAT III SINGLE |
| CAT III | CAT II |
| CAT II | CAT I |
NOTE: You can stop the LAND 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).
| ACTION | RESULT |
|---|---|
1.On the MCDU, on the AFS MAIN MENU page:
| On the MCDU, the AFS/LAND TEST-1 page comes into view. |
| 2.Make sure that the aircraft configuration is the same as given on the AFS/LAND TEST-1 page. Then push the next page function key. | On the MCDU, the AFS/LAND TEST-2 page comes into view. If it does not come into view, and the LAND TEST REFUSED indication comes into view, push the line key adjacent to the END OF TEST indication and do the test again. |
| 3.Make sure that the aircraft configuration is the same as given on the AFS/LAND TEST-2 page. Then push the next page function key. | The AFS/LAND TEST-3 page comes into view. |
| 4.Do the ILS FREQ/CRS or MLS CHAN/CRS (if MLS fitted) selection as given on the AFS/LAND TEST-3 page. Then push the next page function key. NOTE: If local airport is equipped with an ILS having a frequency of 109.9, enter another frequency which should be also different from the other local ILS frequencies (if any others are existing). | The AFS/LAND TEST-4 page comes into view. |
5.As indicated on the AFS/LAND TEST-4 page:
| NOTE: If the list of indications is full, an arrow comes into view at the bottom on the line (between the left and the right parts of the display unit). On the ECAM control panel, push the CLR key to get the remaining indications. |
| 6.If there are no INOP AUTO FLT indications in view, push the line key adjacent to the YES indication. | The AFS/LAND TEST-5 page comes into view. |
7.For each of the AFS/LAND TEST-5,6,7 and 8 procedure pages:
| NOTE: On the AFS/LAND TEST-6 and 7 procedure pages, you only have to check the column Approach Capability (other columns are not shown on the MCDU). |
| The AFS/LAND TEST-6,7 and 8 pages come into view. |
| One AFS/LAND TEST REPORT page comes into view. This page shows a failure indication. To continue the test after the repair, push the line key adjacent to the RETURN indication (the procedure in progress comes into view). NOTE: If the result of the visual and aural checks is incorrect and the result of the test is correct:
|
| 8.If the test is correct: The ILS (or MLS) LAND TEST OK indication comes into view on the AFS/LAND TEST-9 page.
| The AFS/LAND TEST CLOSE-UP page comes into view. |
9.Do the operations as given on the AFS/LAND TEST CLOSE-UP page.
| |
| 10.On the MCDU, push the line select key adjacent to the RETURN indication until the CFDS menu page comes into view. | On the MCDU:
|
Subtask 22-97-00-860-050-A
A. Put the aircraft back to its initial configuration.
(1) Depressurize the aircraft hydraulic systems
(Ref. AMM TASK 29-23-00-864-001)
(Ref. AMM TASK 29-10-00-864-003).
(2) On the center pedestal 115VU, move back the throttle control levers to the IDLE STOP position.
(3) On the maintenance panel 50VU, push the ENG/FADEC GND PWR 1 and 2 pushbutton switches (the ON legends go off).
(4) On the MCDU used for radio navigation mode:
- push the RAD NAV mode key and clear the ILS frequency and course.
(5) On the FCU:
(Ref. AMM TASK 34-10-00-860-005)
(9) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
(10) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
(1) Depressurize the aircraft hydraulic systems
(Ref. AMM TASK 29-23-00-864-001)
(Ref. AMM TASK 29-10-00-864-003).
(2) On the center pedestal 115VU, move back the throttle control levers to the IDLE STOP position.
(3) On the maintenance panel 50VU, push the ENG/FADEC GND PWR 1 and 2 pushbutton switches (the ON legends go off).
(4) On the MCDU used for radio navigation mode:
- push the RAD NAV mode key and clear the ILS frequency and course.
(5) On the FCU:
- push the APPR pusbutton switch to off (ILS frequency and course are no more displayed on the PFDs/NDs if ROSE (I)LS mode selected)
- push the FD and (I)LS (1 & 2) pushbutton switches to off.
- push the FAC1 pushbutton switch (the OFF legend goes off).
- make sure that the FLT CTL/SEC1 pushbutton switch is in the ON position. If not, push the FLT CTL/SEC1 pushbutton switch (the OFF legend goes off).
- push the FLT CTL/ELAC2 pushbutton switch (the OFF legend goes off).
- make sure that the FLT CTL/SEC2 and FLT CTL/SEC3 pushbutton switches are in the ON position. If not, push the FLT CTL/SEC2 and FLT CTL/SEC3 pushbutton switches (the OFF legends go off).
(Ref. AMM TASK 34-10-00-860-005)
(9) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
(10) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).