Anduki Airfield (ICAO: WBAK) is an airport in Seria, a town in Belait District of Brunei.[1] It is operated by Brunei Shell Petroleum (BSP), which uses Sikorsky S-92 helicopters in support of offshore oil platforms. BSP replaced the grass airstrip with a sealed instrument runway in 2008. Future upgrades include the addition of runway lighting and an enhanced instrument approach procedure.[2]