Service difficulty report · Compressor · Boeing 767322

Difficulty date
April 24, 2002
Submitted
May 22, 2002
Operation
Air carrier
Aircraft
N666UA
Make and model
Boeing 767322
Aircraft serial
29238
Aircraft time
12,254 hours, 4,166 cycles
Engine
Pwa PW4052
Engine time
12,254 hours, 4,166 cycles
Part
Compressor
Part serial
27815
Condition
Deteriorated
Location
Nr 2 Engine
Part time
12,254 hours, 4,166 cycles
Stage of operation
CL
How discovered
O
Nature of condition
R
Precautionary procedure
A

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

What was found

AT APPROX 300 AGL NR 2 ENGINE HAD A COMPRESSOR SURGE, MAX EGT 638F. ENGINE EXPERIENCED A GROUP 3 SURGE. SURGE IS CAUSED BY EXCESSIVE BLADE TIP CLEARANCES IN THE HPC REAR STAGES. PERFORMED TEST-21 AND ENGINE FAILED. ENGINE WAS REMOVED FOR SHOP REWORK. AD 2001-25-11 ALREADY IN EFFECT FOR FLEET DETERIORATION MANAGEMENT. FINAL FIX PENDING.