Gentlemen,
Being one of the former 'Limey' Members of the Transamerica (TV) Ops Control group during those 'wonderful' years, I can confirm that TV operated the L-100-300 Herks EGNX-BIKF-CYFB/CYVP-CYWG-KPMD carrying 3 RB211s per trip.
These 3 engines brought the Herk up to MXZFWT to the extent that TV had to pre-position spare wheels, radios, etc. at each en-route airport as they couldn't be carried on the aircraft (wonder if those spares are still there?)!
Anyway, the worst sector for flight planning was BIKF-CYFB/CYVP(?) as the nearest alternate was CYYR! Had the occasional divert to BGSF due prevailing winds!
Ah, what fun! Adding to the fun was caring for a bunch of B747s, DC-10-30s, DC-8-73s and L-188s! Wonderful
!
Bring back 'The Good Old Days'!
Cheers
thetexpat