Kuala lumpur: Malaysia Airports has confirmed that the KLIA Aerotrain service at Terminal 1 of the Kuala Lumpur International Airport (KLIA1) was temporarily suspended at 11 am today due to water accumulation in the tunnel following heavy rainfall.

According to BERNAMA News Agency, the tunnel's drainage system is equipped with pumps designed to manage water ingress during severe weather conditions. However, one of the drainage pumps experienced a technical fault during today's heavy rainfall, preventing the automatic removal of accumulated water. As a safety precaution, train operations were suspended until the water was manually cleared and the tracks were confirmed safe for use. The service resumed at 12.15 pm once full clearance was obtained from the technical and safety teams.

Transport service to the satellite terminal was uninterrupted during the incident, with passengers being ferried via the airside shuttle bus services. Malaysia Airports stated that they are currently rectifying the pump system to ensure optimal performance during future weather events. Their technical teams are closely monitoring the Aerotrain system during these early stages of operations to ensure any necessary adjustments are promptly addressed.

The fully modernised, driverless train service resumed full operations on Tuesday following a RM456 million upgrade under MAHB's RM742 million transformation initiative aimed at future-proofing KLIA as a premier regional aviation hub. An iconic feature of KLIA since its opening in 1998, the Aerotrain now features Alstom Innovia APM 300R trainsets. Each three-car unit can accommodate up to 270 passengers and travel at speeds of up to 56 kilometres per hour, reducing travel time between the main terminal and the satellite terminal to under three minutes.