# SDR DL757071182

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 8, 2007
- Submitted: September 11, 2007
- Operation: Air carrier
- Aircraft: N644DL
- Make and model: Boeing 757232
- Aircraft serial: 23998
- Aircraft time: 64,390 hours, 29,692 cycles
- Engine: Pwa PW2037
- System (JASC): [3452 · ATC Transponder System](https://openairdocs.org/jasc/3452)
- Part: Transceiver
- Part number: 6224540001
- Part serial: 8472
- Condition: Odor
- Location: Dme System
- Stage of operation: DE
- 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/DL757071182

## Discrepancy

DURING DESCENT ACRID ODOR DETECTED IN COCKPIT AND REPORTED BY FLT ATTENDANTS AS WELL IN CABIN.  PRIOR TO ODOR THE CABIN AIRFLOW CHANGED TO A SIGNIFICANTLY LESS INTENSITY.  RT RECIRC FAN WAS TURNED OFF.  LT DME C/B ALSO WAS NOTED POPPED.  THE ODOR DISSIPATED RAPIDLY.  FOUND LT DME WITH STRONG BURNT ODOR.  REPLACED LT DME TRANSCEIVER BORROWED FROM AMERICAN AIRLINES S/N 113 MFG P/N 622-4540-001.  OPS CK NORMAL RESET RT RECIRC FAN AND OPERATED BOTH PACKS ALL CK NORMAL.

---
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.