Boslandew
Given the forcast and actual winds and an average groundspeed of 158-160, the airspeed must have been about 140 knots. The actual minima which would have applied must be relevant to a full understanding of this flight.
Just a small comment on the above.
The average groundspeed quoted is only an estimate based on an initial radio fix. That, together with the fact that the actual winds encountered are not known, do not allow us to calculate an exact IAS for the cruise. However, for what it is worth, using the
estimated data available it is just as possible to show that cruise IAS
might have been in the order of 135 knots.
Regards
TheAerosCo