Service difficulty report · Accelerometer · Boeing 767322

Difficulty date
March 24, 2010
Submitted
April 1, 2010
Operation
Air carrier
Aircraft
N676UA
Make and model
Boeing 767322
Aircraft serial
30028
Aircraft time
33,087 hours, 8,386 cycles
Engine
Pwa PW4052
Engine time
21,811 hours, 30,436 cycles
Part
Accelerometer
Part number
144151000201
Part serial
2425
Condition
Faulty
Location
Nr 2 Engine
Stage of operation
NR
How discovered
9
Nature of condition
E
Precautionary procedure
O

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

What was found

NR 2 ENG VIBRATION. ACP'D HIGH POWER RUN, ENG PARAMETERS: AT 1.40 EPR, VIB = L ENG 1.4, R ENG 2.0, AT 1.26 EPR L ENG 1.5, R ENG 3.1, AT 1.15 EPR L ENG 0.6, R ENG 1.4. ACP'D T ROUBLESHOOTING IAW FIM71-05-00, FIG 104, BLOCKS 1-8. NO DEFECTS FOUND. ACCOMPLISHED BORESCOPE HPC 5,6,14,15, AND HPT 1T, AND 2T. UNABLE TO ACCOMPLISH HPC 10 AND HPC 11 DUE TO STUCK AP-5 INNER PLUG. NO DAMAGE FOUND HPC AND HPT BLADES. MINOR OXIDATION CORROSION ON T1 BLADES. TEST ON AVM SIGNAL CONDITIONAL, CHECKS OKAY. REPLACED RT ENG ACCELEROMETER. CHECKS OKAY.