# SDR HDNA201604270001

- Type: Service difficulty report (as reported; unverified)
- 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
- System (JASC): [7230 · Turbine Engine Compressor Section](https://openairdocs.org/jasc/7230)
- 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
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HDNA201604270001

## Discrepancy

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.

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