# SDR QXEA0002728

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 30, 2000
- Submitted: October 3, 2000
- Operation: Air carrier
- Aircraft: [N478US](https://openairdocs.org/aircraft/N478US), registered now
- Make and model: Fokker F.28 MK4000
- Registry model: [Fokker F.28 MK4000](https://openairdocs.org/model/fokker-f-28-mk4000) (OpenAirDocs)
- Aircraft serial: 11227
- Aircraft time: 32,088 hours, 39,118 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: A/C Pack
- Condition: Vibration
- Location: Pack Bay
- Component: Cooling Turbine, Garrtt
- Component part number: 2046002
- Stage of operation: DE
- How discovered: O
- Nature of condition: E
- Precautionary procedure: H
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/QXEA0002728

## Discrepancy

BZN - VIBRATION WAS FELT DURING DESCENT.  DIVERTED FROM BTM TO BZN.  PLACED CABIN PACK ON DEFERRED MTX LIST.  OPERATION CHECK FLIGHT GOOD.  AIRCRAFT RETURNED TO SERVICE.

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