Service difficulty report · Housing · Boeing 747422

Difficulty date
July 16, 2011
Submitted
August 12, 2011
Operation
Air carrier
Aircraft
N171UA
Make and model
Boeing 747422
Aircraft serial
24322
Aircraft time
82,340 hours, 9,824 cycles
Engine
Pwa PW4056
Part
Housing
Condition
Leaking
Location
Pcu
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

FUEL LEAKING FROM RT HST INBD PCU HOUSING DRAIN HOLE. BOROSCOPED RT INBD HST PCU ACT HOUSING. FOUND SEVERAL LEAKS AT INBD SIDE FASTENERS MID SECTION.BLOWN BACK TO CLEAN AND VERIFIED SOURCE OF LEAK. DEFUELED HST AND SUMPED. BLOW BACK SUSPECTED AREA, NO LEAK DETECTED, SCRAPED SEALANT APPROX 2 IN LONG AT LOWER AFT CORNER OF PCU HOUSING. APPLIED SEALANT.