Plain English Meaning

A navigation rule that says the aircraft must stay within 1 nautical mile of its planned path for at least 95 percent of the flight, using its onboard navigation equipment.

Full Definition

A performance-based navigation specification that requires the aircraft's RNAV system to maintain a total system error of no more than 1 nautical mile from the centerline of the intended track for at least 95 percent of the total flight time. RNAV 1 applies to standard instrument departures (SIDs), standard terminal arrivals (STARs), and up to the .