In a previous article, "S Narayan" said:
Depends. I forgot to do it once at a remote airport without tower. I
realised about an hour later and called in to close the FP and they told me

One time I was flying to Saranac Lake, and I decided at the last minute
(after losing flight following) to do a bit of a scenic flyby of the Lake
Placid area before landing. I didn't think I was an hour past my ETA, but
I must have been because I heard a call on Saranac Lake's CTAF asking if I
was on the frequency, and when I said I was, the caller said that FSS had
called the FBO to see if I was there because I hadn't closed my flight
plan.


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