# SDR AALA20180403006

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 2, 2018
- Submitted: April 9, 2018
- Operation: Air carrier
- Aircraft: [N972TW](https://openairdocs.org/aircraft/N972TW), registered now
- Make and model: Doug MD 83
- Registry model: [Doug MD 83](https://openairdocs.org/model/mcdonnell-douglas-md-83) (OpenAirDocs)
- Aircraft serial: 53622
- Aircraft time: 52,374 hours, 26,220 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Valve
- Part number: VAL5426
- Part serial: P494
- Condition: Faulty
- Location: Zone 100
- 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/AALA20180403006

## Discrepancy

AIRCRAFT WAS GROUNDED: IMMEDIATELY AFTER TAKE OFF COCKPIT AND CABIN HAD STRONG, OVEN, BURNING SMELL. FLIGHT ATTENDANTS CONFIRMED SMELL WITH NO SMOKE OR HAZE IN CABIN. SMELL DISSIPATED COMPLETELY IN 1 TO 2 MINUTES, OVENS WERE OFF AND APU WAS OFF AND INOPERABLE. MAINTENANCE ACCOMPLISHED MCM CARD 05-96-70 TYPE 4, FOUND RIGHT HAND AIRCRAFT PRESSURE REGULATOR, SHUTOFF, VALVE BAD, AND REPLACED VALVE PER MM 21-31-01. PERFORMED SATISFACTORY OPERATIONAL CHECKS, NO ODOR NOTED.

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