Removal of Access Cover 147AZ(148AZ)
TASK 57-17-11-000-001-A
Removal of Access Cover 147AZ(148AZ)
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
C. Referenced Information
3. Job Set-up
Subtask 57-17-11-010-050-A ** ON A/C NOT FOR ALL
Subtask 57-17-11-020-050-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 02:08:44 UTC
Removal of Access Cover 147AZ(148AZ)
WARNING:
MAKE SURE THAT YOU HAVE THE CORRECT FIRE FIGHTING EQUIPMENT AVAILABLE.
WARNING:
BEFORE YOU DO WORK IN OR NEAR A FUEL TANK, MAKE SURE THAT YOU OBEY ALL THE SAFETY PROCEDURES. THIS WILL PREVENT INJURY TO PERSONS AND/OR DAMAGE TO THE AIRCRAFT.
WARNING:
BE CAREFUL NOT TO GET AIRCRAFT FUEL IN YOUR MOUTH OR IN YOUR EYES.
IF YOU GET FUEL ON YOUR SKIN OR ON YOUR CLOTHES, FLUSH IT IMMEDIATELY WITH WATER.
IF NECESSARY, GET MEDICAL HELP.
AIRCRAFT FUEL IS POISONOUS.
WARNING:
MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING GEAR. THIS WILL PREVENT UNWANTED MOVEMENT OF THE LANDING GEAR, AND THUS POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT.
1. Reason for the JobNOTE: This task is applicable to aircraft without additional center tank.
2. Job Set-up InformationA. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE |
| No specific | AR | SAFETY BARRIER(S) |
| No specific | AR | SAFETY CLIP - CIRCUIT BREAKER |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 147 | MAIN GEAR WELL AND HYDRAULIC COMPARTMENT |
| 148 | MAIN GEAR WELL AND HYDRAULIC COMPARTMENT |
| 734, 744 |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 28-00-00-910-001-A | Fuel Safety Procedures |
| TASK 28-10-00-910-001-A | Safety Procedures When You Do Work in a Fuel Tank |
| TASK 28-25-00-650-001-A | Pressure Defuel |
| TASK 28-25-00-650-003-A | To Drain Remaining Fuel from the Wing Tanks and the Center Tank |
| TASK 28-25-00-650-003-A-01 | To Drain Remaining Fuel from the Wing Tanks and the Center Tank |
| TASK 28-25-00-869-001-A | Fuel Transfer |
| TASK 32-12-00-010-001-A | Open the Main Gear Doors for Access |
Subtask 57-17-11-010-050-A ** ON A/C NOT FOR ALL
A. Get Access
(1) Open MLG door 734( 744) (Ref. AMM TASK 32-12-00-010-001).
(2) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position at zone 147(148).
(3) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
Subtask 57-17-11-650-050-A ** ON A/C NOT FOR ALL (1) Open MLG door 734( 744) (Ref. AMM TASK 32-12-00-010-001).
(2) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position at zone 147(148).
(3) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
B. Aircraft Maintenance Configuration
(1) Obey the fuel safety procedures (Ref. AMM TASK 28-00-00-910-001) and (Ref. AMM TASK 28-10-00-910-001).
(2) Defuel the center tank and move the fuel to a different tank (Ref. AMM TASK 28-25-00-650-001) and (Ref. AMM TASK 28-25-00-869-001).
(3) Drain the remaining fuel from the center tank (Ref. AMM TASK 28-25-00-650-003).
Subtask 57-17-11-865-050-A ** ON A/C NOT FOR ALL (1) Obey the fuel safety procedures (Ref. AMM TASK 28-00-00-910-001) and (Ref. AMM TASK 28-10-00-910-001).
(2) Defuel the center tank and move the fuel to a different tank (Ref. AMM TASK 28-25-00-650-001) and (Ref. AMM TASK 28-25-00-869-001).
(3) Drain the remaining fuel from the center tank (Ref. AMM TASK 28-25-00-650-003).
C. Open, safety and tag this(these) circuit breaker(s):
4. Procedure| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | FUEL/X FEED/VALVE/MOT1 | 2QE | A12 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | FUEL/CTR TK/PUMP2 SPLY | 30QA | P26 |
| 121VU | FUEL/CTR TK/PUMP1 SPLY | 29QA | P23 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | FUEL/RFL/DFL/SPLY | 2QU | L24 |
| 121VU | FUEL/RFL/DFL/XFR/DEFUEL/VALVE | 1QU | L23 |
| 121VU | FUEL/L WING TK/PUMP2 SPLY | 7QA | N26 |
| 121VU | FUEL/L WING TK/PUMP1 SPLY | 1QA | N23 |
| 121VU | FUEL/R WING TK/PUMP2 SPLY | 8QA | Q26 |
| 121VU | FUEL/R WING TK/PUMP1 SPLY | 2QA | Q23 |
Subtask 57-17-11-020-050-A ** ON A/C NOT FOR ALL
A. Removal of Access Cover 147AZ(148AZ)
(1) Remove the bolt (3), the washer (4) and the bonding strip (5).
(2) Hold the access cover (1) and remove the screws (6) and the washers (7) and (8).
(3) Remove the access cover (1).
(4) Remove and discard the seal (2).
Subtask 57-17-11-020-050-B ** ON A/C NOT FOR ALL (1) Remove the bolt (3), the washer (4) and the bonding strip (5).
(2) Hold the access cover (1) and remove the screws (6) and the washers (7) and (8).
(3) Remove the access cover (1).
(4) Remove and discard the seal (2).
A. Removal of Access Cover 147AZ(148AZ)
(3) If placards are damaged, missing, have paint on them or you cannot easily read them, replace them at the next maintenance check.
(4) Remove the bolt (3), the washer (4) and the bonding strip (5).
(5) Hold the access cover (1) and remove the screws (6) and the washers (7) and (8).
(6) Remove the access cover (1).
(7) Remove and discard the seal (2).
WARNING:
MAKE SURE THAT THE WARNING/CAUTION PLACARDS ARE INSTALLED AND YOU CAN EASILY READ THEM. THESE PLACARDS TELL PERSONS THAT THERE IS A POSSIBLE LOW OXYGEN CONTENT IN:
(1) Do a visual inspection to see if placards:- THE AREA BEHIND THE ACCESS PANEL(S)
- THE ADJACENT AREAS WHEN THE ACCESS PANEL(S) IS(ARE) OPEN.
- Are damaged
- Are missing
- Have paint on them.
(3) If placards are damaged, missing, have paint on them or you cannot easily read them, replace them at the next maintenance check.
(4) Remove the bolt (3), the washer (4) and the bonding strip (5).
(5) Hold the access cover (1) and remove the screws (6) and the washers (7) and (8).
(6) Remove the access cover (1).
(7) Remove and discard the seal (2).
Access Cover 147AZ (148AZ)