Malaysian MRO provider MAB Engineering has doubled its airframe maintenance capacity at Kuala Lumpur's Sultan Abdul Aziz Shah Airport (SZB) following the commissioning of Hangar 4, according to Aviation Business News, in a move that broadens the Malaysia Aviation Group subsidiary's ability to serve both domestic carriers and international third-party clients.

The new facility operates under a 15-year lease agreement with Impeccable Vintage Properties Sdn Bhd, a wholly-owned subsidiary of sovereign wealth fund Khazanah Nasional Bhd, and forms part of MAG's Long-Term Business Plan 3.0, launched in December 2025.

Hangar 4 enables four simultaneous maintenance lines, compared with the two lines previously available in Hangar 1. The facility accommodates one widebody line for Airbus A330-200 and A330-300 aircraft, one narrowbody line for Boeing 737-800 and Boeing 737-8 variants, and two ATR72 turboprop lines.

Approximately half of the facility's capacity is allocated to internal fleet requirements for Malaysia Airlines and Firefly, with the remaining 50% dedicated to external customers.

MAG president and group chief executive Captain Nasaruddin A. Bakar said: "This expansion not only doubles our maintenance capacity at Subang, but also enhances our ability to serve both MAG airlines and international customers more effectively. As demand for high-quality MRO services continues to grow across the region, Hangar 4 positions us to compete more strongly, support Malaysia's ambition as a regional aviation hub, and deliver greater long-term value to the Group and our customers."

MAB Engineering said the expansion also supports workforce development and delivers a more structured operational environment for employees.

See the full story on how Hangar 4 reshapes MAB Engineering's regional MRO standing.