# SDR CA110913006

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 8, 2011
- Submitted: January 23, 2013
- Operation: Air carrier
- Make and model: Gulstm G100
- Aircraft time: 699 hours
- Engine: Garrtt TFE73140
- System (JASC): [3457 · Global Positioning System](https://openairdocs.org/jasc/3457)
- Part: Gps
- Part number: 8220868087
- Condition: Failed
- Location: Cabin
- Part time: 864 hours
- Stage of operation: NR
- How discovered: O
- Nature of condition: H
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA110913006

## Discrepancy

(CAN) CREW NOTICED THAT THE GPS TIME/DATE STAMP HAD RESET ITSELF TO THE ORIGINAL 1992 ALGORITHM. ONCE AIRCRAFT W.O.W: WENT "BLACK" AIRCRAFT, PULLED BOTH GPS C/B`S, POWERED A/C, INITIALIZED TIME/DATE STAMP IN FMS`S, RESET GPS C/B`S. WHEN GPS`S INITIALIZED THEY WNET THROUGH SELFTEST AND CORRELATED TIME/STAMP WITH FMS ENTRY AND SYNCHED PROPERLY. PILOTS HAD TO REINSTATE "OPTIONS" SETTINGS IN FMS. CARD WAS SENT TO ROCKWELL COLLINS FOR APPLICATION OF "DUAL BATTERY" MOD TO CARD.

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