Originally Posted by jrl767

16. (1985) Erie to Yellowknife… it sounds like a line in some folk ballad… but tomorrow you’re actually gonna be flying it. Your trip will involve three nonstop flights on three airlines, each operating aircraft built by a different manufacturer. Additionally, each aircraft will have a different number of engines. So far as I’ve been able to figure, only one routing meets these parameters. Can you sort it all out? Routing, airlines and aircraft please…

Diverting slightly from moondog’s approach:

ERI-YYZ US D9S Correct!
YYZ-YYC AC L10 Right airline, wrong aircraft and airport
YYC-YZF Pacific Western Electra Wrong airport, wrong airline, RIGHT aircraft!

Again, thanks for your patience! I suspect between you and moondog this question will be history by tomorrow at this time.

5. (1982) You’ll be flying from Mexico City to Baltimore next week. You’ve found an interesting routing that manages to avoid any aircraft powered by Pratt & Whitney’s ubiquitous JT8D engines. In fact, no three engine aircraft will be involved. Rather, you’ll be flying upon two different airlines, each operating the same aircraft model. Given the parameters supplied, I’ve found only one routing that satisfies them. Please identify the airlines, the routing and the aircraft involved.

Let’s try a pair of standard DC-8s (Aeromexico and United), connecting at Los Angeles/LAX

I like your thinking, J! The standard DC-8 is correct! As is Aeromexico.

However, the connection point is not LAX and United was not the second carrier.

Hmm....