# SDR 95ZZZX4015

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 24, 1995
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N3547B](https://openairdocs.org/aircraft/N3547B), registered now
- Make and model: Piper PA-31-350
- Registry model: [Piper PA-31-350](https://openairdocs.org/model/piper-pa-31-350) (OpenAirDocs)
- Aircraft serial: 318052017
- Engine: Lyc LTIO540J2BD
- System (JASC): [8120 · Exhaust Turbocharger](https://openairdocs.org/jasc/8120)
- Part: Hose Assy
- Part number: 93F0100004Y0300
- Condition: Brittle
- Location: Diff Controller
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/95ZZZX4015

## Discrepancy

THERE IS A NR 4 'AN' LOW PRESSURE HOSE ASSEMBLY WITH FIRE SLEEVE INSTALLED THAT RUNS FROM THE NR 4 90-DEGREE FITTING ON  THE DIFFERENTIAL PRESSURE CONROLLER TO THE OIL SUMP/INDUCTION HOUSING ASSEMBLY.  THE END THAT ATTACHES TO THE CONTROLLER IS IN CLOSE PROXIMITY TO THE TURBOCHARGER WASTEGATE VALVE CAUSING HOSE TO BECOME VERY HARD AND BRITTLE.  SUBMITTER SUGGESTS HOSE BE CHECKED CLOSELY EVERY ANNUAL AND ROUTINELY REPLACED EVERY 3 YEARS.

---
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.