Glad you found the links useful Jerry.
I dont know of any website where pricing is specified for engines. At the end of the day the airlines care about the bottom line..money.
If theres a choice of say 2 engines from diff companies, which are both approved for the same airframe it'll all come down to running costs.
These Running costs, maintenance schedules, breakdown ratios , fuel efficiency etc etc all come into the equation but how the bean-counters ultimately decide on this i have no idea.
There is a max speed of 250 kts below 10,000 feet which is an atc legal limit and obviously LDA is involved in the calculation to determine if you can make it into the airport in the first place but ive never come across larger aircraft making shallow descents purely due to LDA. I can see where youre coming from but the differences in weight between normal commercial aircraft be they 747's or dash 8's wouldnt require any deviation from
the usual 3 ° glideslope.
Remember as well if the airport only has a 3° ILS on the field thats all youre getting !! You cant play around with it (ahem !! ) . Assuming youre doing an IR approach Youre coming down
that 3 ° pipe whether you like it or not..
