What LOAs look like now is not what they looked like five years ago, and most likely not what they will look like five years in the future, so it is best to have the tools to react quickly. The updated form will better assist Emergency Operators in gathering the necessary information both quickly and seamlessly to prevent confusion…. With our free LOA Guide…. Resources Sign up for email newsletter. This site uses cookies. We use cookies to provide you with more relevant content based on your browsing and navigation history.
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These cookies will be stored in your browser only with your consent. You also have the option to opt-out of these cookies. But opting out of some of these cookies may affect your browsing experience. This means that if the RNP system does not perform the way it should then an alert should be provided to the flight crew.
In practical terms what this means is that air traffic control ATC can have greater confidence in the track keeping performance of the aircraft and this greater confidence translates into being able to place routes closer together. RNP refers to the level of performance required for a specific procedure or a specific airspace block. An RNP of 0. The aircraft is required to have both aircraft and operational approval for RNP and the operator must know the level of monitoring provided.
The aircraft operator has to ensure that the aircraft meets the requirements for the specific approval being sought. These statements should include the airworthiness basis for compliance.
Compliance with the sensor requirements will have to be determined by the equipment or aircraft manufacturer, while compliance with the functional requirements in this appendix may be determined by the manufacturer or by inspection by the operator. Navigation equipage for all RNP 4 operations in oceanic and remote continental areas must have at least dual independent long-range navigation systems LRNS. Part 91 operators other than 91K should comply with the aircraft eligibility and operational guidance in this advisory circular AC.
To obtain operational authorization, aircraft eligibility must be determined in accordance with the applicable appendix of this AC. Operational authorizations issued under a previous version of this AC or other canceled ACs does not need to be reissued or reevaluated. Different routes that require RNP-4 may have different separation, equipment, and communications requirements.
It is possible in the future that a route or airspace could be established that would require RNP-4 navigation capability with VHF communication and radar. Eligibility of aircraft and certification of its navigation equipment for RNP-4 must be determined: For RNP-4 operations in oceanic or remote airspace, at least two fully serviceable independent LRNS, with integrity such that the navigation system does not provide misleading information, must be fitted to the aircraft.
These will form part of the basis upon which RNP-4 operational approval is granted; For aircraft incorporating GPS, AC A or equivalent documents provide an acceptable means of complying with installation requirements for aircraft that use but do not integrate the GNSS output with that of other sensors. Flightcrew training and operating procedures for the navigation systems to be used must be identified by the operator. See Also:. Airspace International Operations Manual. Learning never stops.
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