Fuel Smell In Cabin
TASK 28-00-00-810-801-A
Fuel Smell In Cabin
A. Referenced Information
3. Fault Confirmation
Subtask 28-00-00-210-050-A
Subtask 28-00-00-810-050-A
Subtask 28-00-00-942-050-A
[Rev.8 from Aug 2018]
2026.04.04 04:28:25 UTC
Fuel Smell In Cabin
WARNING:
OBEY THE FUEL SAFETY PROCEDURES.
1. Possible Causesa fuel leak found below the cabin floor at the left (right) side of the fuselage frame 36/wing rib 1 intersection
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| AMM 21-20-00-010-001 | Removal of the Air-Conditioning Distribution Ducts |
| AMM 21-20-00-410-001 | Installation of the Air-Conditioning Distribution Ducts |
| AMM 21-21-41-000-001 | Removal of the Recirculation Filter |
| AMM 21-21-41-400-001 | Installation of the Recirculation Filter |
| AMM 28-11-00-280-002 | Structural Fuel Tank Leaks - General Information |
| AMM 28-11-00-790-009 | Leak Test of the Fuel Tanks - Without Fuel - Helium Procedure |
| SRM 517612 | |
| AMM 53-32-12-000-002 | Removal of the Cabin Floor Panels |
| AMM 53-32-12-400-002 | Installation of the Cabin Floor Panels |
| SRM 571600 |
Subtask 28-00-00-210-050-A
A. Inspection/Test
(1) Do a visual inspection/leak test to locate a possible fuel leak as follows:
(a) Remove the necessary equipment and furnishing to get access to the cabin floor panels 241HF and 242HF (center passenger compartment).
(b) Remove the cabin floor panels 241HF and 242HF (located between frames 36 and 42) AMM 53-32-12-000-002.
(c) Remove the applicable air conditioning ducts, from above the wing box center section, in the area adjacent to:
(e) Examine for indications of a fuel leak at:
Use one of the applicable procedures as follows:
4. Fault Isolation(1) Do a visual inspection/leak test to locate a possible fuel leak as follows:
(a) Remove the necessary equipment and furnishing to get access to the cabin floor panels 241HF and 242HF (center passenger compartment).
(b) Remove the cabin floor panels 241HF and 242HF (located between frames 36 and 42) AMM 53-32-12-000-002.
(c) Remove the applicable air conditioning ducts, from above the wing box center section, in the area adjacent to:
- the intersection between the left side of the fuselage frame 36 and the left wing rib 1
- the intersection between the right side of the fuselage frame 36 and the right wing rib 1
AMM 21-20-00-010-001.
(e) Examine for indications of a fuel leak at:
- the intersection between the left side of the fuselage frame 36 (rear face) and the left wing rib 1
- the intersection between the right side of the fuselage frame 36 (rear face) and the right wing rib 1.
Use one of the applicable procedures as follows:
- Fuel Tank Leak Checks AMM 28-11-00-280-002
- Leak Test of the Fuel Tanks without Fuel, Helium Procedure AMM 28-11-00-790-009.
- in and adjacent to the leak area specified in Step (c)
- on the pressurized panel between the frames 35 and 36.
Subtask 28-00-00-810-050-A
A. Procedure
(1) Fora fuel leak found below the cabin floor at the left (right) side of the fuselage frame 36/wing rib 1 intersection , the options available are as follows:
(a) Ferry Flight
A ferry flight for the aircraft to return to its main base (without repair) is allowed.
1 Remove the fuel that has leaked.
2 Clean the work area.
3 The cabin fans must be set to on during the ferry flight.
(b) Temporary Repair
1 Use fast curing sealant as detailed in SRM 517612 to do a temporary repair.
2 Make an entry in the aircraft technical log to record the temporary repair to this fuel leak.
1 Do a final repair as follows:
a You must read repair instructions in SRM 517612 before you do the repair.
b Do the FUEL LEAK REPAIR TECHNICAL SHEET - R571.12107.
2 On completion of the repair:
5. Close-up(1) For
(a) Ferry Flight
A ferry flight for the aircraft to return to its main base (without repair) is allowed.
1 Remove the fuel that has leaked.
2 Clean the work area.
3 The cabin fans must be set to on during the ferry flight.
(b) Temporary Repair
1 Use fast curing sealant as detailed in SRM 517612 to do a temporary repair.
2 Make an entry in the aircraft technical log to record the temporary repair to this fuel leak.
NOTE: A temporary repair is limited/valid for 50 flying hours before a final repair has to be carried out.
(c) Final Repair 1 Do a final repair as follows:
a You must read repair instructions in SRM 517612 before you do the repair.
b Do the FUEL LEAK REPAIR TECHNICAL SHEET - R571.12107.
2 On completion of the repair:
- replace the two (2) air recirculation filters (4012HM) and (4013HM), AMM 21-21-41-000-001 and AMM 21-21-41-400-001.
- replace, as necessary, any fuel contaminated insulation mats/blankets found in Para. 3.
Subtask 28-00-00-942-050-A
A. Close Access
(1) Make sure the work area is clean, clear of tool(s) and other items.
(2) Install the new, or, release, fold down and attach in their initial positions the original insulation mats/blankets.
(3) Install the cabin air supply ducts AMM 21-20-00-410-001.
(4) Install the cabin floor panels 241HF and 242HF AMM 53-32-12-400-002.
(5) Install the equipment and furnishing, removed to get access to the cabin floor panels 241HF and 242HF.
(6) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(1) Make sure the work area is clean, clear of tool(s) and other items.
(2) Install the new, or, release, fold down and attach in their initial positions the original insulation mats/blankets.
(3) Install the cabin air supply ducts AMM 21-20-00-410-001.
(4) Install the cabin floor panels 241HF and 242HF AMM 53-32-12-400-002.
(5) Install the equipment and furnishing, removed to get access to the cabin floor panels 241HF and 242HF.
(6) Remove the ground support and maintenance equipment, the special and standard tools and all other items.