Division (a) On IFR flights the commander shall only:

1. (1)

   commence take-off; or

2. (2)

   continue beyond the point from which a revised ATS flight plan applies in the event of in-flight replanning,

when information is available indicating that the expected weather conditions, at the time of arrival, at the destination and/or required alternate aerodrome(s) are at or above the planning minima.