Originally Posted by
Wizofoz
The 737-500 and 600 where both shortened versions, and neither were very popular.
That's an understatement, at least in the case of the -600. While Boeing sold almost 400 of the -500 series, only 69 -600s were ever built, almost half of those for a single airline (SAS).
Originally Posted by
ShyTorque
Try looking up the Boeing 747SP.
Remember watching that type in the Far East, climbing like no other.
A great performer, but commercially it fared even worse than the short 737s - there's no way that selling 44 aircraft got anywhere close to covering the NRCs.