I think the STATUS is misunderstood. It is in two parts. The first part is the cruise part. It gives the cabin altitude you would maintain for actual aircraft altitude. In that if the aircraft cruise altitude was below FL200 the cabin altitude to be maintained is zero which is done by closing the outflow valve as much as it takes. You cannot close more than fully anyway. And if cabin needs to climb or descend then do it at the given rate. The second part is about when on approach, landing and after landing. Here initially on intermediate approach keep the ∆P zero by manipulating the outflow valve and on final approach you completely depressurize the aircraft by putting V/S control full up, that's it. After landing recheck ∆p is zero before opening the doors. The approach part could've been written in reverse order.
Last edited by vilas; 21st Jan 2020 at 05:33.