SDR CA110104008

Service difficulty report · Antenna · Bag JETSTM3112

Difficulty date: December 28, 2010
Submitted: March 15, 2011
Operation: Air carrier
Make and model: Bag JETSTM3112
Aircraft time: 18,598 hours
Engine: Garrtt TPE33110UGR
System (JASC): 3457 · Global Positioning System
Part: Antenna
Condition: Failed
Location: Gps
Stage of operation: NR
How discovered: O
Nature of condition: J
Precautionary procedure: O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

DUAL GPS HAVE BEEN INSTALLED ON A/C UNDER LSTC C-LSA09-302/D ON THIS A/C. GPS ANTENNAS, ADAPTERS AND DISPLAYS ARE THIS ITEMS THAT WERE INSTALLED UNDER LSTC. DURING FLIGHT "NO GPS POSITION" FAULT WAS DISPLAYED ON NR 2 HEAD UNIT/"NO DR" WAS DISPLAYED ON NR 1 HEAD UNIT. TROUBLE SHOT AND FOUND BOTH ANTENNAS TO BE AT FAULT. REPLACED ANTENNAS AND TESTED SYSTEM WITH NO FAULTS.