We are talking a little "apples and oranges" here. "Can do" and "can do" can be two different things when we mix up physical and legal limitations.
Of course a 744 can physically be operated from La Paz.
|Quoting SCAT15F (Reply 3):|
It could be that it is a function of the engines used and respective max TO weights...
Neither the 742 nor the 744 can do La Paz at anything near max TO
weights. They will both be very severely limited in fuel and payload capability. The limiting factor will most likely be wheel speed rather than RWY length.
For legal operation at La Paz the 744 would need to be certified for operation at such altitudes. That's a costly process involving a lot of test work which Boeing would probably do if that could sell some frames. If it doesn't sell planes, then it is waste of money.
Very likely rather simple calculations indicate that the 744 payload/range capability from La Paz would be so limited that such operation would hardly make sense. In any case it would very soon have to find a place to refuel. Then why not use a better suited plane for that first short leg on a flight. The 744 is simply the wrong plane for that place.
A 752 or 332 plane with the highest thrust engine option available would probably be able to lift a meaningful payload quite a bit further than a 744. Even if the 752 and 332 will also be limited way below Max TO
Then why was the 742 certified for La Paz? Pure Guesswork: When that happened way back in last century, then the alternatives would be 707 or DC-8 instead of for instance 752 or 332. Planes which would have been even more severely limited than the 742.