# SDR FQAR20160421018

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 21, 2016
- Submitted: April 21, 2016
- Operation: General aviation
- Aircraft: [N434PA](https://openairdocs.org/aircraft/N434PA), registered now
- Make and model: Piper PA-44-180
- Registry model: [Piper PA-44-180](https://openairdocs.org/model/piper-pa-44-180) (OpenAirDocs)
- Aircraft serial: 4496064
- Aircraft time: 9,811 hours
- Engine: Lyc O360A1H6
- Propeller: Hartzl HCC2YR2
- System (JASC): [7810 · Engine Collector/Tailpipe/Nozzle](https://openairdocs.org/jasc/7810)
- Part: Exhaust Riser
- Part number: 89366005
- Condition: Separated
- Location: Rt Engine
- Stage of operation: NR
- How discovered: O
- Nature of condition: E
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/FQAR20160421018

## Discrepancy

PILOTS REPORTED THE RT ENGINE WAS RUNNING VERY ROUGHLY AND PRODUCING LOUD BACKFIRING, THUMPING SOUNDS.  INSPECTION BY MAINTENANCE TECHS REVEALED THE RT ENGINE NR 3 EXHAUST RISER TUBE AND FLANGE HAD SEPARATED COMPLETELY.

---
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.