# SDR CA980317018

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 9, 1998
- Submitted: January 19, 2001
- Operation: General aviation
- Make and model: Piper PA-31
- Registry model: [Piper PA-31](https://openairdocs.org/model/piper-pa-31) (OpenAirDocs)
- Aircraft time: 15,878 hours
- Engine: Lyc TIO540A2B
- System (JASC): [8120 · Exhaust Turbocharger](https://openairdocs.org/jasc/8120)
- Part: Seal
- Part number: 4066109020
- Condition: Leaking
- Location: Turbocharger
- Component: Turbocharger, Lyc, TIO540A2B
- Stage of operation: CR
- How discovered: O
- Nature of condition: K, J
- Precautionary procedure: E
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA980317018

## Discrepancy

(CAN) THE NR 1 ENGINE BEGAN TO RUN ROUGH DURING CLIMB AND SMOKE WAS NOTICED IN THE EXHAUST DURING CRUISE. THE ENGINE WENT NORMALLY ASPERATED AND SHORTLY AFTER THE CREW NOTICED LOWER THAN NORMAL OIL PRESSURE, AT WHICH POINT THE ENGINE WAS SHUTDOWN AS A PRECAUTION. POST FLIGHT INSPECTION REVEALED A FAILED OIL SEAL IN THE TURBOCHARGER TURBINE CAUSING OIL TO LEAK INTO THE EXHAUST. THE TURBOCHARGER WAS REPLACED.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.