Service difficulty report · Stator Vane · Boeing 777222

Difficulty date
October 11, 1996
Submitted
March 26, 2000
Operation
Air carrier
Aircraft
N768UA
Make and model
Boeing 777222
Aircraft serial
26919
Engine
Pwa PW4077
Part
Stator Vane
Part number
56H156
Condition
Cracked
Location
Nr 1 Engine
Part time
5,600 hours
Stage of operation
IN
Nature of condition
O
Precautionary procedure
K

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

What was found

FOUND NR 1 ENGINE 6TH STAGE HIGH PRESSURE COMPRESSOR VARIABLE STATOR VANE BEYOND CRACK LIMITS. ALSO, SUSPECT A CRACK AT THE TENTH VANE BELOW AP3 PORT. *S/D* REMOVED ENGINE AND REPLACED ALL HPC 6TH STAGE STATOR VANES. PROBLEM PREVIOUSLY DOCUMENTED. NEW VANE DESIGN IN PROCESS.