We perform planned maintenance every Wednesday from 10:00 AM - 12:00 noon PDT (UTC -8). Today, we will be applying several database changes to a subsystem. These changes will impact customers who have created Alert Rules with the Flight Alerts API. Scheduled maintenance will start from 2020-02-26 at 10:00 AM UTC -8 and will last until 10:30 AM UTC -8. During this time, customers may experience stale flight alerts.