Service difficulty report · O-Ring · Boeing 767322

Difficulty date
July 18, 2011
Submitted
August 8, 2011
Operation
Air carrier
Aircraft
N641UA
Make and model
Boeing 767322
Aircraft serial
25091
Aircraft time
86,901 hours, 13,912 cycles
Engine
Pwa PW4060
Part
O-Ring
Condition
Leaking
Location
Nr 1 Engine
Stage of operation
IN
How discovered
O
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 4 BEARING MCD OIL LEAKAGE BEYOND ALLOWABLE LIMITS WITH MAG PROBE. REMOVED ON NR 1 ENGINE (APPROX 90 DROPS PER MINUTE, MAX ALLOW 10 DROPS). REPLACED O-RING CHECKS GOOD.