CS ACNS.C.PBN.1005 Parallel offset capabilities
ED Decision 2019/011/R
(See AMC1 ACNS.C.PBN.1005)
(a) The RNP system has the capability to:
(1) define a offset path from the parent track and transit to and from the offset track maintaining an intercept angle of 30 degrees;
(2) manually initiate and cease the parallel offset path;
(3) automatically cancel the offset path:
(i) following an amendment of the active flight plan by executing a ‘direct-to’;
(ii) approaching the first fix of an instrument approach procedure (initial approach fix (IAF), initial fix (IF), or final approach fix (FAF));
(iii) approaching the commencement of a segment which is not compatible with the offset.
An advance notice of the automatic cancellation is given to the flight crew and the RNP system allows sufficient time for the aircraft to return to the parent track before the commencement of the incompatible leg or the first fix of the instrument approach procedure.
(b) When executing a parallel offset, the RNP system applies to the offset route all performance requirements and constraints of the original route, as defined in the active flight plan.
[Issue: CS-ACNS/2]
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