While pondering why a turn back to the mainland at IGARI would not have reentered KL FIR I came across the following tidbit dated 2007:
"KUALA LUMPUR FLIGHT INFORMATION REGION
CHANGES TO AIRSPACE STRUCTURE OVER THE EASTERN PENINSULAR...
1.3 Under this improvement, a new surveillance radar has been installed at Kota Bharu and this will enhance radar coverage (expected to be commissioned in July 2007) and provides redundant surveillance coverage to the current radar networks.
