Depending on how the scope clause is written it may not be as simple as removing some seats. With BACF and the Embraers the scope clause stated 'world fleet average seat number' . That is why BAcf don't have EMB 190's but EMB-190SR's which were a supplementary type certification and no-one else has got any. It may just be a paperwork exercise but just specifying 190's with less than 100 seats would not have been acceptable.