Use the "I love you" handshape to represent an airplane flying
through the air. This sign is a noun/verb pair.
See Pilot
fly:
Note: you might want to angle your palm a bit more downward than I'm
doing here.




For "AIRPLANE" use a small double motion. You move the hand
forward just a couple inches or so, then bring it back, then move it forward
again.




Now, here we have the sign for "fly" as in the insect. Not
many people know or use this sign. But suppose you were telling a child
a story about a fly, it sure would be handy to know this sign.

Or you can spell it: F-L-Y.
Also, you can show how a fly flies:






Note: If you are talking about a bird flying, just flap your
arms/hands as if you had wings. For a small bird you would flap just
your hands or the index and middle fingers of your hands (while making a
whistling facial expression). For a large bird or a pterodactyl you
would extend your arms and use a large flapping motion.
[My friend did reply.]
He
said:
<<hey..
I am doing fine.. the sign for the pilot..ummm... I dont know yet but I could
assume that it would be a type of airplane sign.>>
Note: This is a very bright Deaf individual who attended a Deaf school and was
raised by Deaf guardians. He is so into airplanes and flying that his
email address used to include the number 757 in reference to that type of
airplane. I looked at his new email address and it had "cr7" in it.
Wondering about that I did a little research and found that CR7 was pilot
lingo for "Regional Jet 70" which, (at the time of this discussion) is the
newest thing in regional jets.
So then, if this fellow doesn't know of a "standard sign" for pilot, I think it is a safe bet that there is some flexibility in this sign.