The crew failed to remove landing gear safety pins before takeoff and then decided to remove them on a taxiway after returning to the departure airport.
System will provide global air traffic flight-following coverage via satellite-based ADS-B receivers with 15-minute or better real-time-update intervals.
Only specific gateway airports, certain airlines and a few private plane companies have met the security qualifications required to have access at DCA.
If improper fuel planning allows fuel to be depleted on that side, both engines will most likely flame out, even though usable fuel remains in the tanks.