A319/320/321 - Cockpit Door Surveillance System- Reliability Improvement

A319/320/321 - Cockpit Door Surveillance System- Reliability Improvement

Background/Reason:

CDSS Cameras P/N 8410B1-101-105 and 8410B2-4-90 installed on A319/320/A321 fleet have experienced premature removals due to internal short circuit in the power supply board.
The aim of this task is to perform a campaign check of the CDSS Cameras MOD status and carry out an upgrade of the installed ones, which do not have MOD “A” and or MOD “B” incorporated at the label P/N.

Material Requirement
1) P/N 8410B1-101-105 MOD A (Goodrich); Flight Crew Door Camera
2) P/N 8410B2-4-90 MOD A & B (Goodrich); No1 Passenger Crew/L/H and R/H Doors Camera

References
1) Airbus A319/320/321 AMM 23-72-00

Accomplishment Instructions
WARNING: Observe all warning and caution given in the referenced AMM TASK.

1) Get access to the avionics compartment. Open, safety and tag the related CBs refer to AMM TASK 23-72-51-000-001

2) Remove Camera P/N 8410B1-101-105 FIN # 12 RA installed on front cockpit door as per AMM Removal / Installation TASK 23-72-51-000-001.

3) Check identification Label on the Camera. FIN # 12 RA

a) IF MOD “A” is indicated on the P/N plate, no further action is required, reinstall Camera as per AMM Task 23-72-51-400-001.

b) If MOD A is not indicated on the label P/N, attach U/S label and write “Unit to be modified”

c) Record in the attached feedback form and with findings.

d) If Camera S/N is affected as per the attached SIL and P/N 8410B1-101-105MOD “A” is not indicated on the Label P/N. Attach U/S Label and writes “Unit to be modified as per CMA 23-37 R03”

4) Install the modified camera FIN # 12A P/N 8410B1-101-105 with MOD “A” incorporated on the Label P/N as per AMM Task 23-72-51-400-001

5) Remove Camera FIN# 13 RA P/N 8410B2-4-90 installed on No1 passenger/crew LH
as per AMM Removal / Installation TASK 23-72-51-000-001

6) Remove Camera FIN # 14RA P/N 8410B2-4-90 installed on No1 Passenger/Crew RH
door as per AMM Removal / Installation TASK 23-72-51-000-001

7) Check identification Label on the Cameras FIN # 13 RA and 14 RA.

a) If both MOD “A” & MOD ”B” are indicated on the P/N plate; no further action is required, reinstall Cameras as per AMM Task 23-72-51-400-001

b) Record in the attached feedback form with findings.

c) If P/N 8410B2-4-90 MOD “A” OR MOD “B” is not indicated on the Label P/N. Attach U/S Label and write “Unit to be modified”

8) Install the modified camera FIN # 13 RA P/N 8410B2-4-90 with MOD “A” & MOD “B” incorporated on the label P/N as per AMM Task 23-72-51-400-001

9) Install the modified camera FIN # 14A P/N 8410B2-4-90 with MOD “A” & MOD “B” incorporated on the label P/N as per AMM Task 23-72-51-400-001

Test
10) Do the operational test of all cameras FIN # 12 RA, 13 RA and 14 RA as per AMM Task 23-72-00-710-001

Close-up
11) Return the A/C to normal operations conditions, as per AMM Sub task.23-72-00-862-051