Frequency change: If you fly any aircraft with a radio in it, at some point, you’re going to have to do it.
ATC may instruct you to continue your flight on a different frequency, or you may request a frequency change yourself. Either way, normal protocol dictates that it be a mutual agreement.
Yet sometimes an unauthorized frequency change is necessary in an emergency to maintain CFR 91.3 pilot-in-command authority.
A Cessna pilot submitted a report to NASA’s Aviation Safety Reporting System for just such a reason. He was conducting an instructional cross-country flight with two students on board when he experienced engine trouble shortly after takeoff. The plane was climbing through 2,000′, and Tower had already switched him over to Departure when the engine began to run rough.[Read more…]