Smoke Incident at KLIA Traced to Faulty Auxiliary Power Unit

SEPANG, July 10 – A plume of smoke seen emanating from an aircraft at Kuala Lumpur International Airport (KLIA) on Thursday morning has been traced to a fault in the plane’s auxiliary power unit (APU), according to sources familiar with the matter.

The incident, which took place at Terminal One around 9.50am, caused brief concern among airport staff and passengers as videos and images circulated on social media.

A preliminary investigation revealed that the smoke was caused by a malfunction in the APU, a device typically used to provide energy to aircraft systems when the main engines are not running. Despite the visible smoke, sources noted that no major abnormalities were detected during post-incident checks on the aircraft.

“There was no indication of fire or critical system failure. The APU is suspected to have vented excess smoke due to a technical fault,” said one source.

Efforts are still underway to obtain an official statement from Malaysia Airports Holdings Berhad (MAHB), the operator of KLIA, regarding the matter.

Flight operations at the terminal were reportedly unaffected, and no injuries were reported.