Ceiling Instrument Flight Rules True Airspeed 
Flight Training Central
FEBRUARY 17, 2024
AIM 5-3-3 ) Change in the average true airspeed (at cruising altitude) when it varies by 5 percent or 10 knots (whichever is greater) from that filed in the flight plan. ( AIM 5-3-3 ) The time and altitude or flight level upon reaching a holding fix or point to which cleared. (
Pilot Institute
NOVEMBER 5, 2024
You might think that Instrument Flight Rules (IFR) are just about how to control and use your instruments in the aircraft, but you need more than skill–you need a rock-solid plan. IFR flight planning is about preparing for every twist and turn along the route. At least 1 instrument approach procedure.
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