When may ATC request a detailed report of an emergency even though a rule has not been violated?

During the en route phase of an IFR flight, the pilot is advised “Radar service terminated.” What action is appropriate?

Pilots on IFR flights seeking ATC in flight weather avoidance assistance should keep in mind that

What action should you take if your No. 1 VOR receiver malfunctions while operating in controlled airspace under IFR?

Your aircraft is equipped with two VOR receivers. The No. 1 receiver has Omni/Localizer/Glide Slope capability, and the No. 2 has only Omni.