Interesting, I gathered that NWA was planning to boost their services to KUL
following anti-trust immunity with MAS, which was granted shortly before 9/11. MAS and NWA had announced that there were plans to extend code-share services between KUL
with onward connections to US cities. MAS was also to become a feeder airline for flights between Southeast Asian points and KUL
to connect on to NWA flights bound for the US.
MAH4546 - also odd as I remember NWA had announced that they were evaluating plans to operate smaller aircraft (757/A320) on the KUL
routes (as part of the anti-immunity trust) about the same time as you mentioned they planned to pull out.
Somehow, after 9/11, nothing more was heard of this and NWA planes also disappeared off the tarmac at KUL
NWA currently code-shares on KLMs daily 744 service between AMS
(btw Avek00 - Kuala Lumpur has perhaps one of the cheapest landing and operational fees in the region)