# SDR AALA20150625010

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 23, 2015
- Submitted: June 25, 2015
- Operation: Air carrier
- Aircraft: N477AA
- 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: 49652
- Aircraft time: 75,908 hours, 40,275 cycles
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Controller
- Condition: Faulty
- Location: Cabin Pressure
- Stage of operation: CL
- How discovered: O
- Nature of condition: B
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA20150625010

## Discrepancy

DURING & AFTER LG RETRACTION A RUBBER BURNING SMELL WAS IN THE COCKPIT, SOUNDS WERE NORMAL.  R & R LT & RT PRESS REGULATOR CONTROLLERS IAW AMM 21-31-01.  PERFORMED A LEAK CHECK OF BOTH VLVS & PERFORMED A PACK BURN OUT IAW AMM 21-92-12.  SYS CHECKED NORMAL.

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