BITE Test of the TCAS A320
1.Reason for the Job
Self explanatory
2. Job Set-up Information
A. 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. 31-60-00-860-001-A | EIS Start Procedure |
| Ref. 31-60-00-860-002-A | EIS Stop Procedure |
| Ref. 34-10-00-860-004-A | Inertial Reference (IR) Alignment-Procedure |
| Ref. 34-10-00-860-004-A02 | 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) |
| Ref. 34-10-00-860-005-A | ADIRS Stop Procedure |
3. Job Set-up
SUBTASK 34-43-00-860-050-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 (PFDs and NDs only) Ref. AMM TASK 31-60-00-860-001.
(3) Do the IR alignment procedure Ref. AMM TASK 34-10-00-860-004.
(4) On the EFIS control sections of the FCU:
— set the mode selector switches to ROSE
— set the scale selector switches to 10.
(5) On the center pedestal, if the ATC/TCAS control unit has the ALTITUDE REPORTING function , set the ALT RPTG (or ALT RPT) switch to ON.
(6) Do the procedure to get access to the SYSTEM REPORT/TEST NAV page on one MCDU Ref. AMM TASK 31-32-00-860-010:
— push the NEXT PAGE function key (two times) until the TCAS menu page comes into view.
SUBTASK 34-43-00-865-143-A
B. Make sure that this(these) circuit breaker(s) is(are) closed:
| PANEL | DESIGNATION | FIN | LOCATION |
| 49VU | COM NAV/ATC/1 | 5SH1 | G11 |
| 121VU | COM NAV/TCAS | 4SG | K10 |
| 121VU | COM NAV/ATC/2 | 5SH2 | K07 |
| 121VU | AUDIO MIXING | 14WW | K03 |
4. Procedure
SUBTASK 34-43-00-740-050-H
A. BITE Test of the TCAS
NOTE: During the test, obey the instructions shown on the MCDU used.
ACTION RESULT On the MCDU: -Push the line key adjacent to the TEST indication. -On the MCDU, the subsequent TEST page with instructions comes into view.-On the CAPT and F/O NDs, these symbols come into view:* A white unfilled diamond with a + 10 indication.* A white solid diamond with a down arrow and a + 02 indication.* An amber solid circle with an up arrow and a — 02 indication.* A red solid square with a — 10 indication.-On the CAPT and F/O PFDs:* The V/S scale is divided in three sectors: one green and two red.* On the CAPT and F/O NDs, the symbols go out of view.* Then the V/S scale goes back to the normal configuration.-in the loudspeakers:* You can hear the TCAS SYSTEM TEST OK voice.-On the MCDU, the TEST OK indication comes into view.
5. Close-up
SUBTASK 34-43-00-860-136-B
A. Do a reset of the EIS
(1) Do the EIS stop procedure Ref. AMM TASK 31-60-00-860-002.
(2) Do the EIS start procedure Ref. AMM TASK 31-60-00-860-001.
SUBTASK 34-43-00-860-051-A
B. Put the aircraft back to its initial configuration.
(1) Do the ADIRS stop procedure Ref. AMM TASK 34-10-00-860-005.
(2) On the center pedestal, on the MCDU, push the line key adjacent to the RETURN indication until the MCDU MENU page comes into view.
(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.
(5) Make sure that the work area is clean and clear of tools and other items.
