Originally Posted by
PLeblond
Not sure you can use the CS100 v/v CS300 as an example. The CS300 has a higher MTOW 156k lbs vs. 139k lbs. In a simple stretch there is no expected increase in MTOW so a CS500 would not have the extra capacity for fuel and the extra weight of the stretch, the seats, the PAX and their luggage would remove fuel. The delta in range from a CS500 should be considerably more.
Leeham modeling suggests a 13% reduction in range for the -500 (but then the map they show indicates 2,900 nautical miles vs. 3,100nm - which is a much smaller 6.5% gap, so perhaps call it 2,700 nautical miles range...
https://leehamnews.com/2026/02/19/ai...es-challenges/