Service difficulty report · Engine · Boeing 767300

Difficulty date
August 20, 2026
Submitted
August 31, 2026
Operation
Air carrier
Aircraft
N686UA
Make and model
Boeing 767300
Aircraft serial
33468
Aircraft time
79,724 hours, 13,755 cycles
Engine
Pwa PW4060
Engine time
19,763 hours, 2,687 cycles
Part
Engine
Condition
Failed
Location
Left
Stage of operation
CL
How discovered
O
Nature of condition
Y, B, 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

LEFT ENGINE FAILED DURING CLIMB, ENG1 SN. (TSI= , CSI= CYC). CREW REPORTED THAT ENG1 WAS SHUTDOWN DUE TO THICK SMOKE IN THE CABIN (L/P 3038084). OIL PRESS IN RED WHILE IN IDLE. EGT 715, FLIGHT ATTENDANTS REPORTED THAT LEFT ENG WAS SHAKING VIOLENTLY ON THE WING (REF L/P 3038184). LCL. MAINT. REPORTED THAT METAL IN THE TAIL PIPE AND MCDS WITH METAL DEBRIS. ABOVE TEXT FOR THICK SMOKE IN THE CABIN (L/P 3038048 NOT 3038084).

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