SDR CALA2018082001824

Service difficulty report · O-Ring · Boeing 7879

Difficulty date: August 17, 2018
Submitted: August 20, 2018
Operation: Air carrier
Aircraft: N27959
Make and model: Boeing 7879
Aircraft serial: 36407
Aircraft time: 14,423 hours, 1,338 cycles
System (JASC): 2820 · Aircraft Fuel Distribution System
Part: O-Ring
Condition: Leaking
Location: Fuel Coupling
Stage of operation: IN
How discovered: V
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

FLUID LEAKING FROM THE LT L/E DRAIN, JUST INBD OF ENGINE. LEAKAGE CONFIRMED FROM LT ENG MAIN FUEL SUPPLY LINE COUPLING AT FRONT SPAR ADJ IFSS 517 O/B OF ENG PYLON. REPLACED COUPLING O-RINGS IAW AMM 20-10-19-00A-720A, PRESSURE CHECKED AND NO LEAKS EVIDENT ON INSTALLATION.

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