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”.
Share with your friends: