# SDR SIMA1811

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 29, 2000
- Submitted: September 29, 2000
- Operation: Air carrier
- Aircraft: N272AE
- Make and model: Saab 340B
- Registry model: [Saab 340B](https://openairdocs.org/model/saab-340b) (OpenAirDocs)
- Aircraft serial: 340B272
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Controller
- Part number: 21179662
- Part serial: 108393
- Condition: Inoperative
- Location: Cockpit
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: B
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SIMA1811

## Discrepancy

JFK - FLT 5043 - PRESSURIZATION DIFFERENTIAL PRESSURE INDICATOR INOPERATIVE.  CABIN ALTITUDE AND CABIN RATE OF CHANGE ERRATIC.  UNABLE TO DETERMINE DIFFERENTIAL PRESSURE IN CABIN.  ITEM DEFERRED IAW MEL 21-5-2.  MAINTENANCE REMOVED AND REPLACED CABIN PRESSURE CONTROLLER IAW SAAB MM.  OPERATIONAL CHECK WAS SATISFACTORY AND AIRCRAFT WAS RETURNED TO SERVICE.  (M)

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