Service difficulty report · Seal · Boeing 777222

Difficulty date
September 20, 2010
Submitted
September 20, 2010
Operation
Air carrier
Aircraft
N780UA
Make and model
Boeing 777222
Aircraft serial
26944
Aircraft time
57,402 hours, 10,424 cycles
Engine
Pwa PW4077
Part
Seal
Part number
70R606600U
Condition
Leaking
Location
Hyd System
Stage of operation
NR
How discovered
9
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

NR 2 ENG HOC. ACCOMPLISHED HIGH POWER RUN, WAS GOOD, NO NEW OIL ON GROUND, ENG NOT WET. FOUND DAMAGE TO HYDRAULIC LINES & BLANKET. AGGED DRAIN LINES AND ACP'D HIGH PWR RUN. NO LEAKAGE FROM LINES. ACPD MM GEARBOX PRESS CK, NO LEAKS NOTED. REPLACED DEOILER CARBON SEAL.