# SDR CA951221025

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 20, 1995
- Submitted: March 26, 2000
- Operation: General aviation
- Make and model: Boeing 727171C
- System (JASC): [3414 · Airspeed/Mach Indicator](https://openairdocs.org/jasc/3414)
- Part: Indicator
- Part number: A4144910005
- Condition: Intermittent
- Location: Mach Inst
- Stage of operation: NR
- Nature of condition: I
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA951221025

## Discrepancy

(CAN)DURING SELECTION FROM MODE A TO MODE B IN THE MACH INDICATOR THE BARBER POLE WAS SEEN TO INTERMITTENTLY STICK AT AN UNUSUAL SETTING. THE INDICATOR OPERATED NORMALLY OTHERWISE AND FOLLOWING THE FLIGHT  THE INSTRUMENT WAS CHANGED.

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