# SDR CA121112004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 24, 2012
- Submitted: September 14, 2015
- Operation: General aviation
- Make and model: Cessna 414
- Registry model: [Cessna 414](https://openairdocs.org/model/cessna-414) (OpenAirDocs)
- Engine: Cont TSIO520NB
- Propeller: Hartzl PHCC3YF2
- System (JASC): [3457 · Global Positioning System](https://openairdocs.org/jasc/3457)
- Part: Antenna
- Part number: 0130023500
- Condition: Intermittent
- Location: Gps
- Stage of operation: AP
- How discovered: O
- Nature of condition: G
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA121112004

## Discrepancy

(CAN) DURING FLIGHT PILOT HAD LOSS OF ALL GPS NAVIGATION TO THE GARMIN 430W , GARMIN 530W AND THE GARMIN G600 SYS.  SYSTEM REVERTED TO DEAD, RECONNING MODE. TROUBLESHOOTING DETERMINED THE GARMIN GA-35 WAAS GPS ANTENNA FOR THE GARMIN 430W FAILED CAUSING AN OSCILLATION WHICH EFFECTED THE OTHER INDEPENDANT GA-35 WAAS GPS ANTENNA FEEDING THE GARMIN 530W/G600 SYS.  BOTH WAAS GPS ANTENNA`S TO BE REPLACED WITH NEW.

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