Join Date: Mar 2009
Location: NYC
Programs: AS MVPG, DL KM, Bee Six, Bonvoy Plat, Choice Plat, BW DS, Avis PC, Natl Exec, Greyhound Road Rewards
Posts: 19,972
Any harnesses or seat devices need to go in a window seat. In the event of an emergency, if in a middle or aisle seat it could impede the evacuation of whoever is in the exterior-most seat(s). This is an FAA requirement and while I don't know the specific citation it is enforced in air crew training programs.
-J.