# SDR AALA20170414009

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 14, 2017
- Submitted: April 18, 2017
- Operation: Air carrier
- Aircraft: N984TW
- Make and model: Doug MD 83
- Registry model: [Doug MD 83](https://openairdocs.org/model/mcdonnell-douglas-md-83) (OpenAirDocs)
- Aircraft serial: 53634
- Aircraft time: 47,933 hours, 24,142 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Regulator Valve
- Part number: 39271411
- Condition: Faulty
- Location: Ac Bay
- Stage of operation: CL
- How discovered: O
- Nature of condition: B
- Precautionary procedure: H, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA20170414009

## Discrepancy

AFTER TAKE OFF F/A CALLED COCKPIT REPORTING STRONG ELECTRIC BURNING FUMES IN CABIN. SOME ODOR IN COCKPIT. THE FLIGHT DECLARED AN EMERGENCY AND RETURNED TO FIELD ORD WITHOUT FURTHER INCIDENT. MAINTENANCE, WHILE TROUBLESHOOTING, FOUND A WIRE SPLICE CONTACTING DUCT BELOW LT ACM. REPLACED CONNECTOR IAW SWP MM 20-31-01. MAINTENANCE CONTINUED TROUBLESHOOTING AND REPLACED THE RT PRSOV IAW MM 21-31-01, OPS AND LEAK CHECKS OK. AS A PRECAUTION, ALSO REPLACED BOTH LEFT AND RIGHT PACK COALESCER BAGS IAW AMM 21-20-02, AND CABIN AIR RECIRCULATION FAN FILTER IAW AMM 21-20-18, ALL OPS AND LEAK CHECKS OK. THE AIRCRAFT WAS GROUNDED. (SEE ALSO SDR AALA201704189031)

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