Clack, FCOM update - a worthy and necessary effort for all operators. I hope that you would agree that BoyFly’s “avoid by 10 miles below 10,000 and by 20 miles above 20,000” is an improvement on your "avoid by 10-20nm". I would add ‘a minimum of 10 / 20 nm …’ for further error mitigation;
- simplicity, but not at the expense of ambiguity.
‘There is no reason to fly through a thunderstorm in peacetime’, I add ... nor wartime. From my experience of an ‘intentional’ flight through a Cb, my co-captain related the risk (fear) to that of being shot at in a helicopter at low level in Nam – and he had been shot at – so he had two experiences to my one.
My conclusion was that it was an experience never, ever, to be repeated.