Hi Dutchy, nice to talk to you again.
69A. caterpillar = flyer still in developmental phase
caterpillar is an anagram of 'recall a trip'
57D. epitaph = express grave concerns
74A. hook and eye= a catch
'sounds like' appears in the clue
barb =hook
and
I = eye
Post again if you get stuck and I'll do my best to help you.
Hope this helps you Dutchy!
Regards, Butterfly