Service difficulty report · Oil System · Boeing 777222

Difficulty date
July 21, 2017
Submitted
July 21, 2017
Operation
Air carrier
Aircraft
N797UA
Make and model
Boeing 777222
Aircraft serial
26924
Aircraft time
86,172 hours, 11,440 cycles
Engine
Pwa PW4090
Engine time
38,497 hours, 6,589 cycles
Part
Oil System
Condition
Low Pressure
Location
Nr 1 Engine
Stage of operation
CL
How discovered
O
Nature of condition
J
Precautionary procedure
E, A

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

What was found

NR 1 ENGINE INDICATED APPARENT LOSS OF OIL PRESSURE AFTER TAKEOFF, AT 2500 FT. AIRCRAFT RETURNED TO FIELD AFTER INFLIGHT SHUTDOWN. REPLACED THE NR 1 ENGINE IAW AMM 71-00-02-401.