As stated above, are they enabled? And are the aircraft registrations assigned to your schedules restricted by ranks?
If they are and you have not reached the rank to fly that aircraft, then you won't see it I believe.
Check that in your local.config.php that this
# Pilot pilots to only fly aircraft they're ranked to
Config::Set('RESTRICT_AIRCRAFT_RANKS', false);
Is set to 'false' then see if you can see these schedules. And while you are in there, check to see what these values are in case someone has bidded on these flights, but considering you are importing them and may have a lot, this may not make a difference.
# If someone places a bid, whether to disable that or not
Config::Set('DISABLE_SCHED_ON_BID', false);
Config::Set('DISABLE_BIDS_ON_BID', false);