Navegação aérea moderna

RNP 0.3 ➔ 0.1 RNP 12 ➔ 4

RNP 10 ➔ 4 RNP 5 ➔ 1 RNP 4 RNP 4

RNP 10 ➔ 4
FLIGHT OPERATIONS
JEFF AIMAR ASSOCIATE TECHNICAL FELLOW AIR TRAFFIC MANAGEMENT SERVICES BOEING COMMERCIAL AIRPLANES GROUP
AERO

RNP 10 ➔ 4
26

REQUIRED NAVIGATION PERFORMANCE FOR

IMPROVED FLIGHT OPERATIONS AND EFFICIENT USE OF AIRSPACE

2 x RNP

R

RNP

equired navigation performance (RNP) extends the capabilities of modern airplane navigation systems by providing real-time estimates of navigation uncertainty, assurance of performance through its containment concepts, and features that ensure the repeatability and predictability of airplane navigation. This precise characterization of airplane performance is key to designing more efficient airspace routes and procedures. Before introducing RNP operations into their fleets, operators should understand the following:

beacons. See “Traditional and Area Navigation” on p. 34.) ICAO defined RNP as “a statement of the navigation performance accuracy necessary for operation within a defined airspace.” This navigation performance accuracy is quantified with two values: a distance in nautical miles (known as the RNP type) and a probability level. For example, an airplane is qualified to operate on an RNP 10 airway if it has demonstrated that the capability and performance of the airplane navigation system will result in the airplane’s being within 10 nmi of the indicated position on the navigation system at least 95 percent of the flying time (fig. 1). The most powerful feature of the ICAO RNP concept is the specification of a minimum performance requirement without equipment mandates. This is a major improvement over the previous method of deriving airspace design based on traditional discrete navigation systems or on a broad population of airplane navigation systems with widely varying performance. However, other factors besides navigation performance (such as intervention capability, traffic density, and route structure) must