Service difficulty report · Actuator · Boeing 777222

Difficulty date
November 8, 2001
Submitted
January 30, 2002
Operation
Air carrier
Aircraft
N767UA
Make and model
Boeing 777222
Aircraft serial
26918
Aircraft time
26,856 hours, 5,317 cycles
Engine
Pwa PW4077
Engine time
22,464 hours, 4,535 cycles
Part
Actuator
Part number
8198021
Part serial
F40367
Condition
Seized
Location
Nr 2 Engine
Stage of operation
CR
How discovered
O
Nature of condition
M, 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

AIRCRAFT DIVERTED INTO SLC DUE TO NR 2 ENGINE OSCILLATING. N1 AND N2 DROPPED TO IDLE WITH EGT INCREASING; EGT 570 DEG. ENGINE SHUT DOWN BY FLT CREW. SUPPLEMENTAL DATA UPDATE RIGHT ENGINE SURGED FOLLOWED BY "ENG FAIL" MESSAGE. MAINTENANCE TESTED THE COMPRESSOR VARIABLE VANE SYSTEM AND FOUND SYMPTOMS OF STATOR VANE ACTUATOR (SVA) FAILURE. THE SVA WAS REPLACED, ENGINE PASSED ALL INSPECTIONS AND RUN-UPS AND WAS RETURNED TO SERVICE.