Service difficulty report · Compressor · Boeing 767432ER

Difficulty date
March 5, 2007
Submitted
March 7, 2007
Operation
Air carrier
Aircraft
N829MH
Make and model
Boeing 767432ER
Aircraft serial
29700
Aircraft time
22,119 hours, 7,336 cycles
Engine
Ge CF680C2*
Engine time
22,126 hours, 7,338 cycles
Part
Compressor
Part serial
702247
Condition
Damaged
Location
Nr 1 Engine
Part time
22,126 hours, 7,338 cycles
Stage of operation
IN
How discovered
B
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

ON DESCENT, RECEIVED A BLEED HPSOV AND N2 VIBS INCREASED TO 5 UNITS. INLET AND EXHAUST OK CHECK CHIP DETECTORS OK RUN ENG AGAIN VIBS RETURNED. BOROSCOPE COMPRESSOR FOUND 6TH STAGE DAMAGE. BORO AND FOUND HPC 6TH AND 7TH STAGE DAMAGE BEYOND MM LIMITS. REMOVED BOROSCOPE PLUGS B 1-5 B 1-6 NR 1 ENG. ENG REMOVAL R REPLACED NR 1 ENG PER TRANS 1RT103.