Originally Posted by
findark
Yes, it's standard for accommodating special circumstances. (The blocks on the 73G are 7DE, 24BC and 25BC.) The seats will be assignable via United systems (but not unblocked in the GDS) beginning at check-in.
Thanks, good info. Happily, I received great service from a UA phone agent today who waived E+ charges to assign the last two pairs of adjacent seats as everything else was occupied or blocked. It’s been years since I had UA status so the help was unexpected and appreciated.