If one is flying within the vertical airspace ie. FL285 to FL420 lets say FL360 and the Random Track flown is North of TRACKA or South of TRACKZ and no part of the planned track is common to any NAT Track. Does one still need to offset 15nm before descending in case of an emergency.
12.3 SPECIAL PROCEDURES
12.3.1 The general concept of these Oceanic in-flight contingency procedures is, whenever operationally feasible, to offset from the assigned route by 15 NM and climb or descend to a level which differs from those normally used by 500 ft if below FL410 or by 1000 ft if above FL410.
Secondly to confirm If a Random Track is planned again without any part of the track being common to a NAT Track. This track is chosen normally by the operator and is not a track selected by ATC which is a system of Random Tracks.
4.1.6 Outside of the OTS periods
operators may flight plan any random routing, except that during a period of one hour prior to each OTS period the following restrictions apply:
not really answered in the documents.
Actually they were answered from the official documents
Mutt