# SDR UHLA99203

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 1, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N804SA
- Make and model: Dhav DHC8311
- Aircraft serial: 375
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Valve
- Part number: 4672ACPW397
- Condition: Broken
- Location: Lt Engine
- Stage of operation: CL
- Nature of condition: B
- Precautionary procedure: A, H
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UHLA99203

## Discrepancy

UHLA - FLT 220 - BUF-BDL - THE FLIGHT ATTENDANT NOTIFIED THE CREW OF SMOKE (IN THE CABIN SHORTLY AFTER TAKEOFF. THE CREW CLOSED THE BLEEDS AND RETURNED TO THE FIELD WITHOUT FURTHER INCIDENT. MAINTENANCE FOUND NR 1 AIR SWITCHING VALVE BROKEN AND REPLACED AS REQUIRED.  GROUND RAN AND OPS CHECKED GOOD.  AIRCRAFT RETURNED TO SERVICE.  (M)

---
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.