# SDR 2019F00172

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 18, 2019
- Submitted: April 18, 2019
- Operation: General aviation
- Aircraft: [N904QS](https://openairdocs.org/aircraft/N904QS), registered now
- Make and model: Cessna 750
- Registry model: [Cessna 750](https://openairdocs.org/model/cessna-750) (OpenAirDocs)
- Aircraft serial: 7500210
- Aircraft time: 14,624 hours, 8,870 cycles
- System (JASC): [4980 · APU Exhaust System](https://openairdocs.org/jasc/4980)
- Part: Muffler
- Part number: 675460014
- Condition: Damaged
- Location: Apu
- Part time: 14,624 hours, 8,870 cycles
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2019F00172

## Discrepancy

REPAIR OF APU MUFFLER EXHAUST CAP OVERSIZED HOLES. TEXTRON AVIATION REPAIR LETTER DQ1914M1 DATED APRIL 12, 2019.

---
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.