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Enter Spectra Jet
Spectra Jet, Inc.
Certified Repair Station X1JR161Y

Full service for all Learjet Models and Challenger 300 / 600 series airframes 
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January 10, 2019 - Universal Avionics released SB 3719 - possible loss of approach capability for Legacy GPS units.  This will happen on 7-April-2019 
If you have a WAAS capable UNS or LPV monitor there should be no effect on your flying.  

If you Don't have WAAS - you can either 
    A) ignore the issue, 
        B) upgrade your systems or 
            C) comply with the SB (but there will be limited parts/availability for this option) 

If you want B or C - Contact us here or call Jon (Sparky) at 937-325-3893 to discuss options.


HERE IS A COPY OF THE SB (IF NEEDED)
GPS_Week_Number_Rollover_SB3719.pdf
GPS_Week_Number_Rollover_SB3719.pdf