SDR CALA2025080507288

Service difficulty report · O-Ring · Boeing 767424ER

Difficulty date: August 1, 2025
Submitted: August 5, 2025
Operation: Air carrier
Aircraft: N67058
Make and model: Boeing 767424ER
Aircraft serial: 29453
Aircraft time: 88,616 hours, 12,371 cycles
System (JASC): 4930 · APU Engine Fuel and Control
Part: O-Ring
Condition: Deteriorated
Location: Zone 100
Stage of operation: IN
How discovered: O
Nature of condition: K, B
Precautionary procedure: K

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

What was found

SIGNIFICANT FUEL SMELL THROUGHOUT CABIN WHILE DOING EXTERIOR WALKAROUND FOUND APU LEAKING FUEL. UPON FURTHER INSPECTION FOUND FUEL LINES GOING TO APU FUEL CONTROL LEAKING FUEL. REMOVED FUEL TUBES TO FUEL CONTROL UNIT. FOUND O-RINGS DETERIORATED. REPLACED O-RINGS AND REINSTALLED FUEL TUBES IAW AMM 49-31-01. OPS AND LEAK CHECKS GOOD. NO FUEL SMELL NOTED IN CABIN. REMOVED AND REPLACED RECIRCULATION AIR FILTER IAW AMM REF TASK 21-25-02-004-020-001. NO ODOR IN CABIN WITH APU AND PACKS RUNNING.