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Definitely. I remember someone (TATY?) correcting me when I mixed up лететь with летать.
But now that you explaned it it seems pretty easy. Still, you need to apply different set of rules to which...

Yes, this explanation is much, much easier than mine, provided that you know what "multidirectional verb" is, which I don't. Well, I did my best. :lol:

This reminded me about the word that is very rarely used and is considered illiterate, like
"Слётай за поллитрой".

So, it is not impossible that some time ago this analogy existed:

слЁтать...

слетAть (perf) - слетAть (imperf)
is analogous to
сбЕгать (perf) - сбегАть (imperf)

Does it make things any easier? All 4 of them are different words.

perf. ones
past:
Она слетАла в...