Service difficulty report · Line · Boeing 777222

Difficulty date
June 9, 2010
Submitted
June 11, 2010
Operation
Air carrier
Aircraft
N791UA
Make and model
Boeing 777222
Aircraft serial
26933
Aircraft time
55,900 hours, 8,254 cycles
Engine
Pwa PW4090
Part
Line
Condition
Leaking
Location
Hyd System
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

NR 1 ENG HYD LEAK. NR1 ENG HYD PUMP SUPPLY LINE DAMAGED AND LEAKING AT TOP OF LINE. REPLACED NR1 HYD SUPPLY LINE, LEAK CKD OK. SUSPECT HYD LEAK BEHIND NR 1 ENG SUPPLY HOSE BLANKET. REPLACED NR 1 ENG HYD PRESS HOSE FROM PYLON DISCONNECT TO EDP, LEAK CHECKED OK. NR1 ENG HYD LINE INSULATION BLANKET HAS BIG BURN HOLE ON BACK AFT SIDE. REPLACED INSULATION BLANKET NR 1 ENG.