Indeed.
With MANY jet transport aircraft, cruising at a faster mach number into a headwind, makes perfect sense, likewise, with a strong tailwind, a much slower mach number (with regard to lift/drag issues) is more suitable.
Yes, Lockheed provided this info in their AFM and in the FMS, superbly presented.
And yes, before anyone says it (especially for Capt Claret)...Lockheed did it BEST.
Bar none!!
Of course, 'tis an old design, but a good one, as those who flew the tri-motor will certainly agree...
