# SDR KY7A2023012400038

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 6, 2024
- Submitted: September 24, 2024
- Operation: Air carrier
- Aircraft: [N425MA](https://openairdocs.org/aircraft/N425MA), registered now
- Make and model: Swrngn SA227AC
- Aircraft serial: AC640
- Aircraft time: 37,247 hours, 49,714 cycles
- System (JASC): [2100 · Air Conditioning System](https://openairdocs.org/jasc/2100)
- Part: Mixing Valve
- Part number: BYLB50437X
- Part serial: 1558
- Condition: Malfunctioned
- Stage of operation: CR
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/KY7A2023012400038

## Discrepancy

SMOKE IN COCKPIT. REMOVED & REPLACED LH MODULATING VALVE & MIXING VALVE IAW SA227 MM 21-40-10 GROUND OPS GOOD.

---
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.