# SDR AALA20061038

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 11, 2006
- Submitted: November 14, 2006
- Operation: Air carrier
- Aircraft: [N7541A](https://openairdocs.org/aircraft/N7541A), registered now
- Make and model: Doug DC-9-82
- Registry model: [Doug DC-9-82](https://openairdocs.org/model/mcdonnell-douglas-dc-9-82) (OpenAirDocs)
- Aircraft serial: 49995
- System (JASC): [4990 · APU Oil System](https://openairdocs.org/jasc/4990)
- Part: O-Ring
- Condition: Leaking
- Location: Apu
- Stage of operation: CL
- How discovered: O
- Nature of condition: K, B, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA20061038

## Discrepancy

ORD - AFTER TAKEOFF CREW REPORTED SMOKE IN FORWARD PART OF CABIN.  RETURNED TO ORD AND LANDED WITHOUT INCIDENT.  FOUND APU OIL LEAK.  REPLACED O-RING AND PERFORMED HIGH PRESSURE PNEUMATIC DUCTING BURN OUT.  SYSTEM GROUND CHECKED NORMAL OPERATION.

---
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.