Nat doc 001 Guidance and Information Material Concerning
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| 1.6 Flight at RVSM Levels 1.6.1 Aircraft which operate at RVSM levels must, in addition to the navigation system requirements set out above, also meet the global height keeping performance specification as developed by ICAO. The global height-keeping performance specification applies to the aggregate of height-keeping errors of individual aircraft and simultaneously satisfies the following four requirements a) the proportion of height-keeping errors beyond 90 m (300 ft) in magnitude is less than 2.0 x 10 -3 ; 1-4 North Atlantic Guidance Material 7 th Edition b) the proportion of height-keeping errors beyond 150 m (500 ft) in magnitude is less than 3.5 x 10 -6 ; c) the proportion of height-keeping errors beyond 200 m (650 ft) in magnitude is less than 1.6 x 10 -7 ; and d) the proportion of height-keeping errors between 290 m and 320 m (950 ft and 1050 ft) in magnitude is less than 1.7 x 10 -8 1.6.2 The following requirements for ASE were developed to satisfy the global height-keeping performance and form the basis of the altimetry MASPS. They are applicable statistically to individual groups of nominally identical aircraft operating in the airspace. They describe the performance that the groups need to be capable of achieving in service, exclusive of human factors and extreme environmental influences, if the airspace system Total Vertical Error (TVE) requirements are to be satisfied. The narrower tolerance in item bis specifically to allow for some degradation with increasing age a) the mean residual position error (static source error) of the group shall not exceed ±25 m (±80 ft b) the sum of the absolute value of the mean ASE for the group and three standard deviations of ASE within the group, shall not exceed 60 m (200 ft and c) each individual aircraft in the group shall be built to have an ASE contained within ±60 m (±200 ft. 1.6.3 The above are for illustrative purposes only. The complete MASPS are complex and include detailed specifications and procedures for the separate aspects of type approval, release from production and continued airworthiness. They are published in the latest version of Joint Aviation Authority (JAA) Temporary Guidance Leaflet (TGL) No. 6 - Revision 1, “Guidance Material on the Approval of Aircraft and Operators for Flight in Airspace above Flight Level 290 where am ft) Vertical Separation Minimum is Applied” and in Federal Aviation Administration (FAA) Document ‘91-RVSM’, “Interim Guidance Material on the Approval of Operations/Aircraft for RVSM Operations”. Download 0.84 Mb. Share with your friends:
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