Originally Posted by
danielSuper
Got repeatedly booted (checked-in as 7F at -24H, upon boarding it shows different seat) to 8F or similar. Unrelated flights. Is there something special about 7F, why is this happening to me on 737-900?
7DE are blocked for those needing easily access seats, if they are part of group sometimes 7F is needed
UA Seat Blocking FAQ (for those with disabilities, ...) [Consolidated]