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Anyone who regularly flies in Australia will often get the announcement from cabin crew to “… as we will be refueling, please switch off your mobile phone whilst on the tarmac..”. We know that the risk of a mobile phone causing an explosion is vanishingly small, if it’s even possible. But I always see ground crew using radios, which makes me wonder:
Are the radios that are used by airport ground crew intrinsically safe?
If you know, please chime in in the comments.