Service difficulty report · Compressor · Bolkms BO105S

Difficulty date
April 27, 2016
Submitted
April 27, 2016
Operation
Air carrier
Aircraft
N911LF
Make and model
Bolkms BO105S
Aircraft serial
S663
Aircraft time
10,346 hours, 40,904 cycles
Engine
Allsn 250C20B
Engine time
16,281 hours, 28,589 cycles
Part
Compressor
Part number
6890550
Part serial
CAC33356
Condition
Making Metal
Location
Nr 1 Engine
Part time
14,300 hours, 28,589 cycles
Stage of operation
LD
How discovered
O
Nature of condition
J
Precautionary procedure
O

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

What was found

WHILE ON BASE FINAL FOR TAXIWAY, THE NR 1 ENG OIL PRESS STARTED FLUCTUATING WITH OIL TEMPERATURE NORMAL & TORQUES MATCHED. AT SHORT FINAL THE ENG CHIP CAUTION LIGHT ILLUMINATED, SIDE STEPPED THE RAMP & LANDED 100 YARDS SHORT OF NORMAL LANDING AREA. SHUTDOWN NR 1 ENG FOLLOWED BY NR 2. INSPECTED & FOUND OIL ALL OVER THE COMPRESSOR. SPUN COMPRESSOR BY HAND, RUBBING & BEARING NOISE COULD BE HEARD. PULLED CHIP DETECTORS & FOUND METAL SHAVINGS ON THE UPPER PLUG.