Established 2003,
Weststar Aviation Services Sdn Bhd (WASSB) operates a main hub at Sultan Abdul Aziz Shah airport.
On May 2013 started operations for Tullow Oil in Nouakchott, Mauritania and in 2014 with
United Offshore Aviation in Thailand.
Weststar is also present in
Norway,
Indonesia
the
Netherlands
and
Italy.
As of 2023 operates over 35 AW139, AW169 and AW189 helicopters across multiple countries, including Malaysia, Indonesia, Saudi Arabia, Namibia, Mauritania, Gabon, and the Republic of Congo.