Yes, so long as the subject matter is mostly aviation related, its acceptable no matter the time or air frame from the "birdmen" and balloons through the modern era.
I only ask no science fiction or fictional air frames (though, theoretical 'black project' aircraft like 'Aurora' might be an exception) as there are plenty of groups dedicated to those. Sorry, no Dale Brown "Old Dog" B-52's either!
Helicopters are most welcome!