# SDR 95ZZZX1891

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 30, 1995
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N18MC
- Make and model: Piper PA-31P
- Registry model: [Piper PA-31P](https://openairdocs.org/model/piper-pa-31p) (OpenAirDocs)
- Aircraft serial: 31P7300143
- Engine: Lyc TIGO541E1A
- System (JASC): [8520 · Reciprocating Engine Power Section](https://openairdocs.org/jasc/8520)
- Part: Crankshaft
- Part number: 75458
- Condition: Ctweight Failed
- Location: Nr 4
- Part time: 2,200 hours
- Stage of operation: CR
- Nature of condition: R
- Precautionary procedure: E, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/95ZZZX1891

## Discrepancy

DURING CRUISE, LT ENGINE LOST POWER, OIL PRESSURE OKAY.  ENGINE SHUT DOWN AND SAFE LANDING MADE.  FOUND BOLTS BROKE ON NR 3 CYCLINDER CONNECTING ROD.  ALSO, NR 4 COUNTERWEIGHT BROKE LOOSE FROM CRANKSHAFT DUE TO FAILURE OF ATTACH POINT ON CRANKSHAFT.  NO PRIOR INDICATION OF FAILURE.  SUSPECT COUNTERWEIGHT BROKE LOOSE CAUSING ROD TO FAIL.

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