SDR UALA2011091905037

Service difficulty report · Unknown · Boeing 747422

Difficulty date: September 18, 2011
Submitted: September 22, 2011
Operation: Air carrier
Aircraft: N175UA
Make and model: Boeing 747422
Aircraft serial: 24382
Aircraft time: 83,209 hours, 9,441 cycles
Engine: Pwa PW4056
System (JASC): 7300 · Engine Fuel and Control
Part: Unknown
Condition: Leaking
Location: Nr 4 Engine
Stage of operation: IN
How discovered: O
Nature of condition: K
Precautionary procedure: O

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

What was found

FOUND FUEL LEAKING FROM WHERE COMBUSTION & EXHAUST CASE JOIN TOGETHER. APPEARS TO BE INTERNAL. NR 4 ENGINE REMOVED & STARTED INSTALLATION. FINISH BY STARTING AT PARAGRAPH STEP 4 (PG 409) TO END. NEEDED TO REMOVE & THEN RE-INSTALLED FUEL DISTRIBUTION VALVE UP TO ITEM 3 PARAG I STEP 7 PER AMM. ENGINE RUN AND LEAK CHECK NEEDED. MRDATA INPUT NEEDED. MR73139 -39 (PARTIAL) CONT OF AMIS ITEM 2092070 ACP ENG RUN AND LEAK CHECK. NO LEAKS NOTED. CLOSED REVERSERS AND COWLS PER AMM.