# SDR DALA1111840983

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 17, 2011
- Submitted: February 18, 2011
- Operation: Air carrier
- Aircraft: N983DL
- Make and model: Doug MD-88
- Registry model: [Doug MD-88](https://openairdocs.org/model/mcdonnell-douglas-md-88) (OpenAirDocs)
- Aircraft serial: 53247
- Aircraft time: 52,675 hours, 38,597 cycles
- System (JASC): [4920 · APU Core Engine](https://openairdocs.org/jasc/4920)
- Part: Apu
- Part serial: P80391
- Condition: Malfunctioned
- Location: Apu Bay
- Part time: 19,988 hours, 36,922 cycles
- 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/DALA1111840983

## Discrepancy

AFTER TAKEOFF AFT LAVATORY SMOKE ALARM SOUNDED.  NO VISIBLE SMOKE OR HAZE WAS REPORTED BUT THERE WAS AN ODOR.  FLIGHT CREW RETURNED AIRCRAFT TO DEPARTURE AIRPORT.  MAINTENANCE IN PROGRESS, APU CHANGE AND PNEUMATIC DUCT BURNOUT.

---
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.