From Brian Flescher, principal timpanist with the New World Symphony:
I was not allowed to board with my snare drum UA90 from Newark to TelAviv. The gate manager insisted I cannot board because my snare drum case went over the faa regulation sized by 1-2 inches. I boarded with them anyways and she came on fuming, made me deplane and threatened to not let me on the flight. Finally I just took out the case and managed to descalate the situation. She insisted I check the case and so there my snare drum sits unsecured with absolutely no protection in the overhead bin.
United are habitually unfriendly to musicians.