# SDR WX0A070316

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 4, 2009
- Submitted: June 10, 2009
- Operation: Air carrier
- Aircraft: N948MA
- Make and model: Doug DC-9-87
- Registry model: [Doug DC-9-87](https://openairdocs.org/model/mcdonnell-douglas-dc-9-87) (OpenAirDocs)
- Aircraft serial: 49778
- System (JASC): [2170 · Humidity Control System](https://openairdocs.org/jasc/2170)
- Part: Coalescer Bag
- Part number: 21D101
- Condition: Dirty
- Stage of operation: TO
- How discovered: O
- Nature of condition: B
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/WX0A070316

## Discrepancy

AT MAX POWER ON TAKEOFF, BAD BURNING ODOR IN THE AIR CONDITIONING SYSTEM, IN THE FRONT AND BACK CABIN AND COCPIT.  PERFORMED ENGINES RUN-UP WITH AIRCRAFT CREW, RUN EACH PACKS ON AND BOTH OK WITH NOT ANY BURNING ORDER INDICATION AT THIS TIME.  PRECAUTIONARY CHANGE COALESCER BAGS ON BOTH PACKS, IAW AMM 21-20-02 AND OPS CHECK GOOD.  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.