KLIA aerotrain operating as intended, early disruptions to service deemed typical for new rail systems – MAHB

Independent railway assessors reviewing the Kuala Lumpur International Airport (KLIA) aerotrain say that the system is functioning as intended, stating that service disruptions since commissioning are typical for the early operational stage of complex rail systems, as the New Straits Times reports.

According to Malaysia Airports Holdings (MAHB), the assessors concluded these issues do not present a safety risk and can be effectively managed through structured engineering controls, continuous monitoring, and disciplined maintenance practices.

The airport operator said that the operational service availability of the service improved to 100% in December 2025 from 98.67% in July, and that aerotrain operations have remained stable since the rollout of the Comprehensive Action Plan (CAP) on November 15 last year.

On November 10, MAHB had announced a scheduled suspension of aerotrain operations between midnight and 5 am daily to facilitate routine maintenance and system checks. Following the introduction of the CAP, engineering hours were planned from 9 pm to 7 am. This was subsequently shortened to 11 pm to 7 am to accommodate the festive and school holiday peak periods.

Following improvements in work sequencing and resource deployment, the reduced engineering hours have been maintained while CAP activities continue, with MAHS saying that the overnight maintenance window is necessary to ensure the long-term reliability and safety of the system.