SDR 2008UALA00178

Service difficulty report · Line · Boeing 777222

Difficulty date: January 9, 2008
Submitted: January 10, 2008
Operation: Air carrier
Aircraft: N777UA
Make and model: Boeing 777222
Aircraft serial: 26916
Aircraft time: 50,675 hours, 9,698 cycles
Engine: Pwa PW4077
Engine time: 43,707 hours, 8,894 cycles
System (JASC): 2820 · Aircraft Fuel Distribution System
Part: Line
Condition: Bulged
Location: Nr 2 Engine
Stage of operation: IN
How discovered: V
Nature of condition: O
Precautionary procedure: K

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

What was found

NR 2 ENG EVIDENCE OF FIRE AT FUEL HYDRAULIC DISCONNECT AREA. HEAT SHIELD IS BURNED AND LINERS ARE DAMAGED. DURING TROUBLESHOOTING FOUND BURNED HEAT SHIELD BUT NO HYD FLUID RESIDUE. DISCOVERED BALLOON IN FUEL SUPPLY LINE. AFTER REPLACING FUEL & HYD LINES, HEAT SHIELD & INSULATION, PERFORMED MOTORING TO VERIFY FIX. REPLACEMENT FUEL LINE ALSO BALLOONED. SECOND REPLACEMENT LINE OK.