Service difficulty report · Fuel Tank · Cessna 172M

Difficulty date
December 10, 2010
Submitted
March 15, 2011
Operation
Air carrier
Make and model
Cessna 172M
Aircraft time
4,654 hours, 50,594 cycles
Part
Fuel Tank
Part number
052600744
Condition
Cracked
Location
Filler Neck
Part time
4,581 hours
Stage of operation
IN
How discovered
9
Nature of condition
K
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

(CAN) ANTI CHAFE RUBBER STRIPS UNBONDED FROM STRAPS LOOSENING TENSION ON TANK. TANK MOVEMENT IN WING CAVITY CAUSED A FATIGUE CRACK WHERE FILLER NECK WAS WELDED TO TANK SINCE FILLER IS SCREWED TO STRUCTURAL PANEL (UPPER WING SKIN). FUEL LEAK WHEN TANK WAS FILLED (INTERMITTENT LEAK FIRST SUSPECTED AS FUEL GAUGE TRANSMITTER)

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