Detailed Inspection of Outer Wing, Bottom Skin Lower Surface at Fuel Tank Water Drain Holes between RIB 22-23, and Magnetic Level Indicator Position...
TASK 57-41-00-220-801-A
Detailed Inspection of Outer Wing, Bottom Skin Lower Surface at Fuel Tank Water Drain Holes between RIB 22-23, and Magnetic Level Indicator Position...
Refer to the MPD TASK: 572164-03
DETAILED INSPECTION OF OUTER WING, BOTTOM SKIN LOWER SURFACE AT FUEL TANK WATER DRAIN HOLES BETWEEN RIB 22-23, AND MAGNETIC LEVEL INDICATOR POSITION BETWEEN RIB 15-16
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Referenced Information
3. Job Set-up
Subtask 57-41-00-941-070-A ** ON A/C NOT FOR ALL
Subtask 57-41-00-110-066-A ** ON A/C NOT FOR ALL
Subtask 57-41-00-865-091-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.02 06:30:58 UTC
Detailed Inspection of Outer Wing, Bottom Skin Lower Surface at Fuel Tank Water Drain Holes between RIB 22-23, and Magnetic Level Indicator Position...
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
WARNING:
PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:
1. Reason for the Job- THE FLIGHT CONTROLS
- THE FLIGHT CONTROL SURFACES
- THE LANDING GEAR AND THE RELATED DOORS
- COMPONENTS THAT MOVE.
Refer to the MPD TASK: 572164-03
DETAILED INSPECTION OF OUTER WING, BOTTOM SKIN LOWER SURFACE AT FUEL TANK WATER DRAIN HOLES BETWEEN RIB 22-23, AND MAGNETIC LEVEL INDICATOR POSITION BETWEEN RIB 15-16
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE |
| No specific | AR | SAFETY BARRIER(S) |
| No specific | AR | SAFETY CLIP - CIRCUIT BREAKER |
| No specific | AR | WARNING NOTICE(S) |
| 98D27803500001 | 1 | LOCKING TOOL ZERO POS |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.08BAA9) | Non Aqueous Cleaner-General - - |
| (Material No.14SBA1) | Textile-Lint free Cotton - |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 500 | LEFT WING |
| 600 | RIGHT WING |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 28-00-00-910-001-A | Fuel Safety Procedures |
| SRM 572100 | (for corrective action) |
Subtask 57-41-00-941-070-A ** ON A/C NOT FOR ALL
A. Safety Precautions
(2) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
(3) Install the 98D27803500001 LOCKING TOOL ZERO POS on the flap/slat control lever.
(4) Put a WARNING NOTICE(S) in the cockpit to tell persons not to operate the flaps or slats.
Subtask 57-41-00-865-090-A ** ON A/C NOT FOR ALL WARNING:
OBEY THE FUEL SAFETY PROCEDURES.
(1) Obey the fuel safety procedures (Ref. AMM TASK 28-00-00-910-001). (2) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
(3) Install the 98D27803500001 LOCKING TOOL ZERO POS on the flap/slat control lever.
(4) Put a WARNING NOTICE(S) in the cockpit to tell persons not to operate the flaps or slats.
B. Open, safety and tag this(these) circuit breaker(s):
Subtask 57-41-00-010-057-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1 | 5CV | B06 |
| 121VU | FLIGHT CONTROLS/SLT/CTL/SYS2 | 7CV | R21 |
C. Get Access
(1) Put the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position below the applicable fuel-tank water drain-holes and magnetic level indicator in the wing bottom skin.
4. Procedure(1) Put the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position below the applicable fuel-tank water drain-holes and magnetic level indicator in the wing bottom skin.
Subtask 57-41-00-110-066-A ** ON A/C NOT FOR ALL
A. Preparation for Inspection
(1) Use a Textile-Lint free Cotton - (Material No.14SBA1) , made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) to clean:
Subtask 57-41-00-220-050-A ** ON A/C NOT FOR ALL (1) Use a Textile-Lint free Cotton - (Material No.14SBA1) , made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) to clean:
- The wing bottom skin around the fuel-tank water drain-holes
- The magnetic level indicator and the hole edges.
B. Detailed Inspection of Outer Wing, Bottom-Skin Lower Surface at Fuel-Tank Water Drain-Holes between RIB 22-23, and Magnetic-Level Indicator Position between RIB 15 and 16
(1) Examine the fuel-tank water drain-holes in the wing bottom skin between RIB 22 and 23. Make sure that:
5. Close-up(1) Examine the fuel-tank water drain-holes in the wing bottom skin between RIB 22 and 23. Make sure that:
- There is no damage
- The edges are not corroded
- The surface finish of the edges is in good condition
- There is no fuel leakage.
NOTE: If necessary, refer to the SRM 572100 for the correct repair procedure.
(2) Examine the magnetic level indicator between RIB 15 and 16. Make sure that: - The hole edges are not damaged
- The sight collar is in good condition
- The surface finish of the hole edges is in the correct condition
- There is no fuel leakage
- There is no corrosion.
NOTE: If necessary, refer to the SRM 572100 for the correct repair procedure.
Subtask 57-41-00-865-091-A ** ON A/C NOT FOR ALL
A. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 57-41-00-942-075-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1 | 5CV | B06 |
| 121VU | FLIGHT CONTROLS/SLT/CTL/SYS2 | 7CV | R21 |
B. Removal of Equipment
(1) Remove the WARNING NOTICE(S).
(2) Remove the 98D27803500001 LOCKING TOOL ZERO POS from the flap/slat control lever.
(3) Remove the SAFETY BARRIER(S).
(4) Remove the access platform(s).
(1) Remove the WARNING NOTICE(S).
(2) Remove the 98D27803500001 LOCKING TOOL ZERO POS from the flap/slat control lever.
(3) Remove the SAFETY BARRIER(S).
(4) Remove the access platform(s).
Fuel Tank Water Drain Hole in the Outer Wing Bottom Skin