Readback: March 2010

I have a question that people have been asking me and I dont know the answer.The G1000 has two GPS receivers: GPS 1 is the default choice and automatically switches to GPS 2 if there is a problem. Or you can manually select GPS 2.My question is: Why can only one be used at a time? For example, one GPS could be the primary navigator with the flight plan and the other could indicate final destination or a waypoint on the side of the track or even an alternate.

Key Takeaways:

• The G1000's dual GPS receivers cannot simultaneously display two different waypoints (e.g., flight plan and alternate), a design choice likely due to programming and certification costs rather than technical or legal constraints.
• New IFR currency rules clarify that when combining aircraft and Aviation Training Device (ATD) time, pilots must complete one hour in the aircraft and three hours in an ATD, Flight Simulator (FS), or Flight Training Device (FTD) within six calendar months.
• The article highlights several safety and operational concerns, including the omission of VOR frequencies on GPS approach plates, the critical misunderstanding that "radar contact" relieves pilots of terrain clearance responsibilities, and the nuanced rules for filing an alternate airport with an unmonitored navaid.

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