# SDR SFOA20151230001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 18, 2015
- Submitted: December 30, 2015
- Operation: Air carrier
- Aircraft: [N77SF](https://openairdocs.org/aircraft/N77SF), registered now
- Make and model: Cessna 650
- Registry model: [Cessna 650](https://openairdocs.org/model/cessna-650) (OpenAirDocs)
- Aircraft serial: 6507072
- Aircraft time: 5,584 hours, 4,451 cycles
- System (JASC): [7700 · Engine Indicating System](https://openairdocs.org/jasc/7700)
- Part: Indicator
- Part number: 10326N02R00
- Part serial: B154
- Condition: Faulty
- Location: Cockpit
- Part time: 1 hours
- Stage of operation: TX
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SFOA20151230001

## Discrepancy

UPON ENG START UP FOR DEPARTURE, PILOT NOTED LT DIGITAL TURBINE INDICATOR SHOWED NO DIGITS.  ENG STARTED NORMALLY & ALL OTHER INSTRUMENTS READ NORMAL & THERE WERE NO ENG COMPUTER FAULTS.  A SPECIAL FLIGHT PERMIT WAS ISSUED & ACFT WAS FLOWN TO HOME BASE WHERE IT WAS DETERMINED THAT THE INDICATOR WAS FAULTY.  AN OVERHAULED INDICATOR WAS INSTALLED & THE ACFT RETURNED TO SERVICE.  THE FAILED INDICATOR HAD 1.1 HRS SINCE OVERHAUL & A RECORDS CHECK SHOWED IT HAD BEEN REPAIRED FOR THE SAME DISCREPANCY.

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