# SDR XYZA20161101001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 4, 2016
- Submitted: November 1, 2016
- Operation: General aviation
- Aircraft: [N54HC](https://openairdocs.org/aircraft/N54HC), registered now
- Make and model: Cessna 525
- Registry model: [Cessna 525](https://openairdocs.org/model/cessna-525) (OpenAirDocs)
- Aircraft serial: 5250157
- Aircraft time: 3,470 hours, 2,588 cycles
- Engine: Wilint FJ441A
- System (JASC): [2140 · Heating System](https://openairdocs.org/jasc/2140)
- Part: Flow Valve
- Part number: 1H1248
- Part serial: 8AJ45
- Condition: Faulty
- Location: Cabin Heat
- Stage of operation: CR
- How discovered: O
- Nature of condition: M, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/XYZA20161101001

## Discrepancy

AIRCRAFT GOES TO MAX HEAT IN FLIGHT. AIR CONDITIONING SYSTEM OPERATES NORMALLY HOWEVER, HOT BLEED AIR APPEARS TO BE COMING FROM THE EMERGENCY PRESSURIZATION SYSTEM.

---
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.