# SDR AALA981278

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 27, 1998
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N221AA](https://openairdocs.org/aircraft/N221AA), 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: 49172
- System (JASC): [4990 · APU Oil System](https://openairdocs.org/jasc/4990)
- Part: O-Ring
- Condition: Failed
- Location: Apu
- Stage of operation: CL
- Nature of condition: B
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA981278

## Discrepancy

ORD - FLT 1631 - ODOR IN CABIN BOTH ON GROUND AND IN AIR.  AFTER TAKEOFF, ODOR WAS STRONGER AND A SMOKY APPEARANCE WAS NOTED THROUGHOUT CABIN.  LANDED ORD WITHOUT INCIDENT.  REPLACED APU OIL COOLER SUPPLY LINE O-RING.  ACCOMPLISHED BURN OUT OF HIGH PRESSURE PNEUMATIC DUCTING PER MM.  REPLACED COALESCER BAGS.  NO SMOKE NOTED.  SYSTEM GROUND CHECKED, NORMAL OPERATION.  (X)

---
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.