# SDR 2011FA0000781

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 8, 2011
- Submitted: December 9, 2011
- Operation: General aviation
- Aircraft: [N117MF](https://openairdocs.org/aircraft/N117MF), registered now
- Make and model: Beech C90
- Registry model: [Beech C90](https://openairdocs.org/model/beech-c90) (OpenAirDocs)
- Aircraft serial: LJ779
- System (JASC): [3457 · Global Positioning System](https://openairdocs.org/jasc/3457)
- Part: Antenna
- Part number: 0130023500
- Condition: Inoperative
- Location: Nr 2 Gps
- Component: Gps, Garmin Intl
- Component part number: GA35
- Stage of operation: IN
- 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/2011FA0000781

## Discrepancy

TROUBLESHOT BOTH NR 1 & 2 GPS SYSTEMS DUE TO BEING INOPERATIVE.  FOUND NR 2 ANTENNA RESISTANCE CHECKED OK,  ANY TIME NR 2 GPS SYSTEM TURNED ON IT CAUSED A BLOCKAGE OF ALL GPS SIGNALS TO ACFT.  WITH NR 2 GPS SYS TURNED OFF NR 1 GPS SYS OPERATED GOOD WITH NO PROBLEMS NOTED.  INSTALLED NEW NR 2 ANTENNA AND BOTH SYS OPS TESTED OK WITH NO PROBLEMS NOTED.

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