When KLIA TAR achieved its operational status on 27 June 1998, AAT provided warranty maintenance to the system for three (3) years from 01 July 1998 to 30 June 2001. Upon expiry of the warranty maintenance, AAT was given with only four (4) months extension from 01 July 2001 to 31 October 2001. The subsequent maintenance service to this KLIA TAR system was procured through an open tender. AAT participated in the tender exercise but lost to a competitor who quoted bid price way below AAT cost. For the next 4 years and 2 months (01 November 2001 to 31 December 2005), KLIA TAR was maintained by the other contractor.
However, in 2006 the Government re-awarded the KLIA TAR maintenance contract to AAT through direct negotiation after the previous maintenance contractor failed to perform and maintained the system effectively. This time the contract to AAT was eligible for 5 years, from 01 January 2006 to 31 December 2010. At the same time Government approved RM2.9 million to assists AAT in the restoring works for KLIA TAR into its original state after having been deprived of proper maintenance for the past 4 years.
Once again when KLIA TAR maintenance service contract expired, CAAM decided to procure the new maintenance contract through an open tender.
As such AAT was only given with 6 months extension from (01 January 2011 to 30 June 2011). The new contractor that won the KLIA TAR maintenance contract failed to obtain the OEM support as required in the tender within the stipulated time and as a result, its contract was withdrawn. The maintenance contract was awarded to AAT through direct negotiation valid for 3 years from 01 March 2012 to 28 February 2015.