Seattle required time of arrival (RTA) flight trials

• The 2010 Seattle RTA trials demonstrated the following: — When RTA function is engaged, the current generation of Boeing 737 avionics can meet the assigned time over the meter fix within 20 seconds under non-metering conditions (where delays are under 2 minutes). — Current generation Boeing 737 avionics can meet ATC speed and altitude constraints through use of modified FMS performance limits. — The workload feedback from both pilots and controllers indicate the feasibility of the RTA clearances for meeting TMA generated STAs in non-metering conditions.