# SDR KBMA88637

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 1, 2001
- Submitted: March 5, 2001
- Operation: General aviation
- Aircraft: [N350SH](https://openairdocs.org/aircraft/N350SH), registered now
- Make and model: Snias AS350BA
- Aircraft serial: 2957
- Engine: Tmeca ARRIEL1
- System (JASC): [7714 · Engine RPM Indicating System](https://openairdocs.org/jasc/7714)
- Part: Control Box
- Part number: 0177555170
- Part serial: 2178B
- Condition: Malfunctioned
- Location: Tach Gen
- Part time: 4,435 hours
- Stage of operation: IN
- How discovered: C
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/KBMA88637

## Discrepancy

TACH BOX CLOSES BLEED VALVE AT 96% AND OPENS AT 95%

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