Same A/c Type-Different Max Structural Weights?
Take 2 different 737-200s. One with -15 engines and the other with -17 engines. Why would the -17 engined aircraft have a higher max structural take-off weight of about 2 tons? Surely the -17 engines would only come into play in allowing higher RTOWs at higher temps and altitudes than the -15s? Any ideas?