Functions as a past participle adjective; generally treated as non-gradable.
The scheduled meeting will take place at 10 AM.
Запланированная встреча состоится в 10 утра.
The scheduled flight was delayed due to weather conditions.
Назначенный рейс был задержан из-за погодных условий.
Added because the past-participle form "scheduled" is widely used adjectivally (‘the scheduled flight’).