# SDR HEEA107420

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 13, 2005
- Submitted: December 28, 2005
- Operation: Air carrier
- Aircraft: N792P
- Make and model: Skrsky S76A
- Aircraft serial: 760193
- Aircraft time: 12,454 hours
- Engine: Allsn 250C30S
- System (JASC): [3110 · Instrument Panel](https://openairdocs.org/jasc/3110)
- Part: Isolation Mount
- Part number: 7610708004119
- Condition: Unknown
- Location: Cockpit
- Stage of operation: CR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HEEA107420

## Discrepancy

IN CRUISE FLIGHT THE AIRFRAME DEVELOPED A LATERAL VIBRATION WHICH INCREASED IN DIRECT PROPORTION TO THE INCREASE OF AIRSPEED.  MAINTENANCE REPLACED TWO BIFILAR BUMPERS AND THE MOUNTING CLAMPS (PN 700006-2) AND (PN 6438B-103) ON ONE ALTITUDE INDICATOR AND ONE HSI.

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