# SDR DJFA2007138

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 2, 2007
- Submitted: December 4, 2007
- Operation: Air carrier
- Aircraft: [N733TA](https://openairdocs.org/aircraft/N733TA), registered now
- Make and model: Raythn HAWKER800XP
- Aircraft serial: 258337
- Aircraft time: 9,278 hours, 5,754 cycles
- Engine: Garrtt TFE7315BR
- System (JASC): [2140 · Heating System](https://openairdocs.org/jasc/2140)
- Part: Heater
- Condition: Smoke
- Location: Cabin
- Stage of operation: CR
- How discovered: V
- Nature of condition: B
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DJFA2007138

## Discrepancy

AT FL 400 CREW REPORTED SMOKE AND FUMES IN THE COCKPIT APPROX 3 MINS AFTER ACTIVATING/OPENING FLIGHT DECK HEAT VALVE. SMOKE WENT AWAY AFTER HEAT VALVE WAS CLOSED.   MAINTENANCE COULD NOT DUPLICATE THE DISCREPANCY.  DUCTS WERE CHECKED FOR EVIDENCE OF CONTAMINATION BUT NONE WAS FOUND.  MAINTENANCE PERFORMED HIGH POWER ENGINE RUNS AND A CHECK FLIGHT WITH NO FURTHER DISCREPANCIES.

---
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.