barely understood by pilots and ATCOs.
Civvy-wise, you could be right. However, at my unit radio-failure both simulated & genuine is something we get so much of we cannot really call it unusual. The only thing we might not pick up on is the triangle because that is rarely practised.
Last time I was on a fam-flight (3 years ago) the airline had a mobile phone on the flight-deck of every single aircraft. They were found to help enormously down-route with the usual hassles, but would obviously be a useful tool in the event of radio-fail.
But here's a chestnut - could you issue a clearance via txt?
