# SDR 0201055644

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 30, 2002
- Submitted: April 5, 2002
- Operation: Air carrier
- Aircraft: [N544US](https://openairdocs.org/aircraft/N544US), registered now
- Make and model: Boeing 757251
- Aircraft serial: 26491
- Aircraft time: 20,968 hours, 8,491 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Odor
- Condition: Detected
- Location: Cabin
- Stage of operation: CL
- How discovered: O
- Nature of condition: B
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/0201055644

## Discrepancy

UPON ROTATION, A STRONG ACID ODOR BECAME EVIDENT IN COCKPIT. CABIN CREW ALSO NOTED THE SAME ODOR IN THE PASSENGER CABIN AREA. COCKPIT CREW DECLARED AN EMERGENCY AND MADE AN UNEVENTFUL OVERWEIGHT LANDING.  MAINTENANCE PERFORMED MULTIPLE MAINTENANCE CHECKS INCLUDING ENGINE RUN, PACK CHECKS, OIL CONTAMINANTS, AND OVEN CHECKS/REPLACEMENT WITH NO CONCLUSIVE DISCREPANCIES. AIRCRAFT RETURNED TO SERVICE.

---
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.