# SDR DALA2017122809018

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 23, 2017
- Submitted: January 3, 2018
- Operation: Air carrier
- Aircraft: N914DN
- Make and model: Doug MD-90-30
- Registry model: [Doug MD-90-30](https://openairdocs.org/model/mcdonnell-douglas-md-90-30) (OpenAirDocs)
- Aircraft serial: 53394
- Aircraft time: 56,854 hours, 31,037 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Cabin Pressure
- Condition: Malfunctioned
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2017122809018

## Discrepancy

CABIN FAILED TO PRESSURIZE ON DEPARTURE. QRH COMPLIED WITH.  LOUD HISSING NOISE REPORTED FROM L2 DOOR 20 MINUTES INTO FLIGHT.  PACKS RETURNED TO NORMAL OPERATION.  MAINTENANCE PRESSURIZED AIRCRAFT TO 5 PSI AND CHECKED L2 DOOR.  SLIGHT NOISE.  NO DEBRIS AND LUBRICATED SEAL.  PERFORMED PACK ODI PREVENTION ON BOTH PACKS.  AIRCRAFT OKAY FOR SERVICE.

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