Как е възможно този самолет да оперира в RVSM пространството при положение, че вертикалната му скорост постоянно се променяше между -1500ft/min и 1500ft/min? Може би е имало турболенция?
(c) Altitude-keeping equipment: All aircraft. To approve an aircraft group or a nongroup aircraft, the Administrator must find that the aircraft meets the following requirements:
(1) The aircraft must be equipped with two operational independent altitude measurement systems.
(2) The aircraft must be equipped with at least one automatic altitude control system that controls the aircraft altitude—
(i) Within a tolerance band of
±65 feet about an acquired altitude when the aircraft is operated in straight and level flight under nonturbulent, nongust conditions; or
(ii) Within a tolerance band of
±130 feet under nonturbulent, nongust conditions for aircraft for which application for type certification occurred on or before April 9, 1997 that are equipped with an automatic altitude control system with flight management/performance system inputs.
(3) The aircraft must be equipped with an altitude alert system that signals an alert when the altitude displayed to the flight crew deviates from the selected altitude by more than:
(i) ±300 feet for aircraft for which application for type certification was made on or before April 9, 1997; or
(ii) ±200 feet for aircraft for which application for type certification is made after April 9, 1997.
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