For those wondering about whether or not the RMAF may have attempted to intercept MH-370, this is a very interesting article on Butterworth Airbase. It is unlikely that a "scramble" would have gone "un-noticed".
http://anotherbrickinwall.blogspot.com.a...under.html
AIP: http://aip.dca.gov.my/aip%20pdf/AD/AD2/W...rworth.pdf
http://anotherbrickinwall.blogspot.com.a...under.html
AIP: http://aip.dca.gov.my/aip%20pdf/AD/AD2/W...rworth.pdf