Settle down fellas, there is no chance that 737s will be operated out of PP, so who cares about the figures. Both the B1900 and Q300 could operate fine at the present length. The aircraft they are getting at in the article is the ATR-72 (or perhaps, misguidedly, the Q400). They would require an extension to operate effectively (or at all). Probably something like 1700 m at a minimum.