![]() RNAV holding, FRT, and TOAC are presently considered optional A-RNP functions in the U.S. only intends to implement RF legs, Parallel offsets, and Scalable RNP. This is referenced in Service Information Letter (SIL) D201707000018, which states Honeywell Flight Management System (FMS) PBN capabilities in accordance with AC 90-105A. Currently, no Honeywell FMS can claim TOAC capability. This function is not yet well defined for either equipment requirements or airspace implementation. TOAC is an advanced function of the FMS designed to calculate and adjust the speed of the aircraft in an attempt to arrive at a point within a defined time limit. The purpose is to apply closer route spacing along turns on airways, or to transition from one airway to another. FRTs are like fly-by turns, but use a fixed radius track with performance boundaries, creating a predictable, repeatable path associated with RNP. ![]() RNAV holding is intended to give aircraft the ability to fly either ATC-defined or published holding patterns with the performance-monitoring, and alerting abilities associated with RNP.įRTs are waypoint turn transitions between en route segments using a defined radius. RNP scalability is applicable for all SIDS, STARS, approaches and en route airways defined by an RNP requirement. Two-dot (full scale) deflection of the CDI equals the RNP value displayed on the PFD for the current leg. RNP values are depicted on the primary flight display and the CDI is scaled to the RNP value for the current leg. RNP scalability refers to the avionics systems ability to automatically retrieve and display the required RNP value for each leg segment of a route or procedure from the navigation database. Parallel offsets provide a capability to fly offset from the parent track route segments and are intended to replicate the track at the desired offset to the left or right of the centerline route. RF legs are currently used in terminal and approach procedures. The FMS computes the actual flight path, providing for repeatable and predictable turn performance. Radius-to-fix (RF) leg capability allows for a constant radius turn starting and ending on a fix or waypoint. Additional to the RNP requirements, AC 90-105A and ICAO PBN Doc 9613, list the following six functional capabilities that also define A-RNP eligibility. ![]() Charter and commercial operators seeking A-RNP approval under OpSpec C063, B035, or B036, that have a current RNP AR approval under OpSpec/LOA C384, meet the criteria for A-RNP defined in AC 90-105A, without the need for re-examination of aircraft eligibility.Ī-RNP recognition is based on navigation systems meeting the performance and functional criteria for RNP-2, RNP-1 and RNP APCH to LNAV minima. Note : RNP AR (Authorization Required) approaches are not covered under A-RNP and in the U.S., are defined under AC 90-101A. > RNP Approaches (including RNAV (GPS) approaches) > RNP-1 for departures and arrivals (ODPs, SIDs and STARs) > RNP-2 for domestic, offshore, oceanic and remote continental en route For the operator, it provides specific criteria used to qualify for operations on RNP routes, SIDs, STARs or approaches.Ī-RNP encompasses the following RNP specifications: The A-RNP specification is intended to provide for an internationally harmonized standard. ![]() A-RNP encompasses all phases of flight from departure and en route to arrival and approach. Navigation Specification DesignationsĪ-RNP is simply a combination of several Navigation Specifications, along with additional functions described in detail further below. Honeywell Guide to Advanced Air Mobility Expertsįigure 1.Engine & APU Service Plan Authorizations.Business & General Aviation Service Center Tools.Component Maintenance Modification Cards.Software & Database Services (ASDS, NavDB, TerrDB).Honeywell Forge Subscriptions & Billing.Sales & Service Partners Resource Center.Industrial Coatings, Platings and Insulators. ![]()
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