For planning outlook was useful to have the two sections that had the up coming maintenance checks (showing the aircraft and number of days out), and which aircraft are under a maintenance check (and number of days when they become available again).
This does not seem to be available in the new UI.
Would be nice to add it back, or have a filter on My Aircraft screen for each view. If it is a filter on My Aircraft, same logic could be used to filter for coming Lease Expirations (e.g. 30 days out).