I wish to add my medical recommendation to the list of people who contributed in this thread to you research for further medical opinions.
My AVM history is this:
I was diagnosed with torcular tentorial region arteriovenous fistula with a cerebellar cortical venous reflux. Had a first embolization done in April 2017 with coils to the venous pouch and a second embolization in May with onyx. Still remained was a tiny area of residual fistula between the torcula and the posterior part of this sausage shaped fistula.
I had gamma-knifed in Nov.1st 2017.
I was appointed to have a follow up session this coming May.
I am Spanish interpreter, profession that demands high levels of concentration to memorize and translate long sentences to conveying the proper understanding into English.
After every intervention I was always felt OK, and I never stop working in my field.
I never bled nor have had other consequences.
I asked the doctors about the possible risks of air traveling, but was allowed to do it.
I live in Ontario, Canada and the excellent team that attended me during the described episodes were leaded by Dr. Michael Cusimano. He works in several hospitals belonging the the University of Toronto Network, however he mainly resides at the Toronto Western Hospital and St. Michael Hospital, both in Toronto.
I hope this reference might help you in your research for more highly qualified opinions.