RNP AR DP capability requires specific aircraft performance, design, operational processes, training, and specific procedure design criteria to achieve the required target level of safety. It is not intended for every operator or aircraft. RNP AR DP is intended to provide specific benefits at specific locations. Scalability and RF turn capabilities is mandatory in RNP AR DP eligibility. Similar to RNP AR approaches, RNP AR departure procedures have stringent equipage and pilot training standards and require special FAA authorization to fly.RNP Authorization Required Departure (RNP AR DP):.(See Paragraph 5-4-18, RNP AR Instrument Approach Procedures.) RNP APCH has a lateral accuracy value of 1 in the terminal and missed approach segments and essentially scales to RNP 0.3 (or 40 meters with SBAS) in the final approach. GBAS Landing System (GLS) procedures are also constructed using RNP APCH NavSpecs and provide precision approach capability. This means that your aircraft may be eligible for RNP APCH operations, but you may not fly an RF turn unless RF turns are also specifically listed as a feature of your avionics suite. RF turn capability is optional in RNP APCH eligibility. Pilots are required to use SBAS to fly to the LPV or LP minima. LNAV/VNAV incorporates LNAV lateral with vertical path guidance for systems and operators capable of either barometric or SBAS vertical. GPS with or without Space-Based Augmentation System (SBAS) (for example, WAAS) can provide the lateral information to support LNAV minima. In the U.S., RNP APCH procedures are titled RNAV (GPS) and offer several lines of minima to accommodate varying levels of aircraft equipage: either lateral navigation (LNAV), LNAV/vertical navigation (LNAV/VNAV), Localizer Performance with Vertical Guidance (LPV), and Localizer Performance (LP).RNP applications also account for potential errors at some multiple of lateral accuracy value (for example, twice the RNP lateral accuracy values).The lateral accuracy value is a value typically expressed as a distance in nautical miles from the intended centerline of a procedure, route, or path.Lateral Accuracy values are applicable to a selected airspace, route, or procedure.Use the capabilities of your avionics suite to verify the appropriate waypoint and track data after loading the procedure from your database Further, optional capabilities such as Radius-to-fix (RF) turns or scalability should be described in the AFM or avionics documents. If you look for a specific instrument procedure in your aircraft's navigation database and cannot find it, it's likely that procedure contains PBN elements your aircraft is ineligible for or cannot compute and fly. As a safeguard, the FAA requires that aircraft navigation databases hold only those procedures that the aircraft maintains eligibility for. For example, RNP 1 is different from RNAV 1, and an RNP 1 eligibility does NOT mean automatic RNP 2 or RNAV 1 eligibility. It is this concept that requires each NavSpec eligibility to be listed separately in the avionics documents or AFM. NavSpecs should be considered different from one another, not "better" or "worse" based on the described lateral navigation accuracy. For example, an aircraft may be eligible for RNP 1, but may not be capable of RNP 1 operations due to limited NAVAID coverage or avionics failure.The RNP capability of an aircraft will vary depending upon the aircraft equipment and the navigation infrastructure.OBPMA capability therefore allows a lessened reliance on air traffic control intervention and/or procedural separation to achieve the overall safety of the operation.RNP capability of the aircraft is a major component in determining the separation criteria to ensure that the overall containment of the operation is met.A critical component of RNP is the ability of the aircraft navigation system to monitor its achieved navigation performance, and to identify for the pilot whether the operational requirement is, or is not, being met during an operation.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |