# Aerotrain (KLIA)

> Mediated Wiki article. Canonical URL: https://mediated.wiki/source/Aerotrain_(KLIA)
> Markdown URL: https://mediated.wiki/source/Aerotrain_(KLIA).md
> Source: https://en.wikipedia.org/wiki/Aerotrain_(KLIA)
> Source revision: 1342464062
> License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/)

Airport people mover in Kuala Lumpur, Malaysia

For other uses, see [Aerotrain (disambiguation)](/source/Aerotrain_(disambiguation)).

This article needs more citations. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "Aerotrain" KLIA – news · newspapers · books · scholar · JSTOR (November 2017) (Learn how and when to remove this message)

Aerotrain Innovia APM 300 train 2 in August 2025; in the background, the system's tracks can be seen passing underneath one of the taxiways Overview Status In service Owner Malaysia Airports Holdings Berhad Locale Kuala Lumpur International Airport, Malaysia Stations 2 Service Type People mover Services 1 Operator(s) Engineering Transportation, Malaysia Airport (Sepang) Sdn. Bhd. Rolling stock 9 × Alstom Innovia APM 300R History Opened 1998; 28 years ago (1998) (original) then, 1 July 2025; 12 months ago (1 July 2025) (after replacement) Closed 2023 (under replacement) Technical Track length 1.2 km (0.75 mi) Character Serves sterile parts of the airport Electrification 600 V 50 Hz 3-phase AC third rail Operating speed Maximum speed 56 km/h (35 mph), Minimum speed 47 km/h (29 mph) Route map Legend Terminal A Main Terminal 67 Operations, Maintenance and Storage Facility Terminal B under construction This diagram: view talk edit

The **Aerotrain** is an automated [people mover](/source/People_mover) system located within [Kuala Lumpur International Airport](/source/Kuala_Lumpur_International_Airport) (KLIA) in [Malaysia](/source/Malaysia).[1]

The Aerotrain opened in 1998 along with KLIA, the Aerotrain system consists of two stations, one in the [Main Terminal Building](/source/Kuala_Lumpur_International_Airport#Terminals) and the other in [Satellite Building A](/source/Kuala_Lumpur_International_Airport#Terminals).

Notably, the Aerotrain has been plagued by operational and maintenance issues since the late 2000s,[2] with the most notable breakdown occurred in March 2023,[3][4] which saw the Aerotrain being suspended for nearly 2 and a half years to make way for replacement works.[5]

During the final phase of testing, Transport Minister [Anthony Loke](/source/Anthony_Loke) announced that the system would resume operations on 1 July 2025.[5][6][7]

The Aerotrain officially resumed operations on 1 July 2025, with the first train entering service at 10 am.[8]

## General information

The Aerotrain is fully automated and driverless. Usually, two trains ply between the two stations. In accordance with the [Spanish solution](/source/Spanish_solution), when the train reaches the platform, the exit doors will open first for passengers to disembark, after which the entrance door on the other side will open.

Part of the train track goes underground to cross the [taxiway](/source/Taxiway).[9] The ride between the Main Terminal Building and Satellite Terminal A takes about 2.5 minutes.[10]

The Aerotrain supported various operating modes such as Synchronized Double Shuttle Mode, Offset synchronized Double Shuttle Mode, Unsynchronized Double Shuttle Mode, Single Shuttle Mode, On-Call Mode, Test Train Mode and Out Of Service Mode. The Aerotrain has 4 major sub-systems, namely the Central Control System, Vehicle System, Station Automatic Train Operation (ATO) System and Power Distribution System (PDS).

The maintenance of the Aerotrain is scheduled at 10am-12pm and 12am-5am every day, when only one of the trains will be running for operation and the other one will undergo maintenance works and safety checks. The frequency of the train decreases from every 21⁄2 minutes to every 5 minutes during the maintenance periods.

## Rolling stock

A [CX-100](/source/Innovia_APM_100) train in June 2015

The original [rolling stock](/source/Rolling_stock) was manufactured by [Adtranz](/source/Adtranz) (merged with [Bombardier Transportation](/source/Bombardier_Transportation) in 2001) and comprises 3 [CX-100](/source/Innovia_APM_100) trains with 3 cars per train (originally 2 cars), of which each car has a capacity of 249.[11] The trains have an operating speed of 56 km/h (35 mph) with a 600 V 3-phase AC power supply at 50 Hz. A 75 kW (101 hp) DC electric motor (model number: 1460-P4, controlled by a [thyristor](/source/Thyristor) [drive](/source/Motor_drive)) constitutes the propulsion system of the trains.

The system originally operated with only two trains, but on 15 March 2011, a new train known as Train 3 was added to the fleet. This was intended to provide coverage when either Train 1 or Train 2 are taken out of service for an overhaul programme. An overhaul programme was deemed necessary at this point as both Train 1 and Train 2 had been in use for 13 years.[*[citation needed](https://en.wikipedia.org/wiki/Wikipedia:Citation_needed)*]

On 28 December 2021, a local engineering firm, Pestech International Bhd, secured a contract of [RM](/source/Malaysian_ringgit)742.95 million for the Aerotrain. This contract involved a project to upgrade the 1 km (0.62 mi) automated people mover system at the airport, together with the Aerotrain's operations and maintenance for a 10-year period from 2025 to 2034. The existing CX-100 rolling stock would be replaced with the [Innovia APM](/source/Innovia_APM) 300 in this upgrade.[12]

[Innovia APM 300](/source/Innovia_APM) in August 2025

However, delays with the project resulted in the contract to be re-awarded to a new consortium of Alstom, IJM Construction Sdn Bhd and Pestech Technology Sdn Bhd in January 2024. The new rolling stock was delivered in September 2024, and the system was originally planned to reopen by the end of January 2025.[13] However, the new rolling stock remained in the testing stage as of mid-January 2025,[14] with a new resumption date forecasted to be in June 2025.[4] On 21 June 2025, Transport Minister [Anthony Loke](/source/Anthony_Loke) announced that the Aerotrain would finally resume operations on 1 July 2025.[6][7][5]

## Incidents

Between 1 November 2010 and 15 March 2011, the Aerotrain service was suspended due to upgrading works. Passengers were transferred between the Main Terminal Building and the Satellite Building by bus shuttles during the upgrading period.[15][16][2]

On 25 December 2017, one of the trains broke down in between the two terminals and a detrainment was carried out.[17] This left the aerotrain running on a single train and free shuttle buses were provided.

On 1 March 2023, the service was suspended until further notice following an incident where the Aerotrain service broke down due to mechanical and electronic failures, resulting in 114 passengers being stranded mid-way on the tracks.[18] To take advantage of the suspension, the Aerotrain service would be replaced with new ones in 3 years' time,[19] as the contract for the Aerotrain service had been handed down to a new company.

## Gallery

		- KLIA Aerotrain station at Satellite A Building

		- The interior of a KLIA Aerotrain.

		- Overhaul program underframe

		- Installation of New Drive Axle assembly

		- Overhaul program in progress

		- Wayside track maintenance

		- Lift-up vehicle process at KLIA MAHB Operations, Maintenance and Storage Facility (OMSF)

## See also

- [List of airport people mover systems](/source/List_of_airport_people_mover_systems)

## References

1. **[^](#cite_ref-1)** ["Appendices"](https://www.unescap.org/sites/default/files/Item5_Malaysia_2%20appendices_0.pdf) (PDF). *United Nations Economic and Social Commission for Asia and the Pacific*. [Archived](https://web.archive.org/web/20200611093557/https://www.unescap.org/sites/default/files/Item5_Malaysia_2%20appendices_0.pdf) (PDF) from the original on 11 June 2020. Retrieved 11 June 2020.

1. ^ [***a***](#cite_ref-:0_2-0) [***b***](#cite_ref-:0_2-1) Shanmugam, M (28 August 2023). ["Alternative Views: Failure to fix mere 1.5km-track issue is a national shame"](https://theedgemalaysia.com/node/680354). *The Edge Malaysia*. Retrieved 23 June 2025.

1. **[^](#cite_ref-3)** Basyir, Mohamed (2 March 2023). ["KLIA aerotrain breakdown video goes viral"](https://www.nst.com.my/news/nation/2023/03/885340/klia-aerotrain-breakdown-video-goes-viral). *New Straits Times*. Retrieved 7 March 2023.

1. ^ [***a***](#cite_ref-a255_4-0) [***b***](#cite_ref-a255_4-1) Saieed, Zunaira (2025-01-24). ["Malaysia's KLIA aerotrain service to resume by June with new trains costing $140m"](https://www.straitstimes.com/asia/se-asia/malaysias-klia-aerotrain-service-to-resume-by-june-with-new-trains-costing-s140mil). *The Straits Times*. Retrieved 2025-03-23.

1. ^ [***a***](#cite_ref-:1_5-0) [***b***](#cite_ref-:1_5-1) [***c***](#cite_ref-:1_5-2) Hassan, Hazlin (23 June 2025). ["Malaysia's KLIA internal train service to resume operations on July 1, hopes to regain lustre"](https://www.straitstimes.com/asia/se-asia/malaysias-klia-internal-train-service-to-resume-operations-on-july-1-hopes-to-regain-lustre). *The Straits Times*. Retrieved 23 June 2025.

1. ^ [***a***](#cite_ref-:2_6-0) [***b***](#cite_ref-:2_6-1) Tee, Kenneth (21 June 2025). ["KLIA Aerotrain to resume service for travellers on July 1, Transport Ministry announces"](https://www.malaymail.com/news/malaysia/2025/06/21/klia-aerotrain-to-resume-service-for-travellers-on-july-1-transport-ministry-announces/181134). *Malay Mail*. Retrieved 23 June 2025.

1. ^ [***a***](#cite_ref-:3_7-0) [***b***](#cite_ref-:3_7-1) Nizam, Fuad (21 June 2025). ["KLIA's aerotrain system operational next month - Loke \[WATCH\]"](https://www.nst.com.my/news/nation/2025/06/1233914/klias-aerotrain-system-operational-next-month-loke-watch). *New Straits Times*. Retrieved 23 June 2025.

1. **[^](#cite_ref-8)** ["Anwar rides upgraded KLIA Aerotrain, says it's 'good, faster than before'"](https://www.malaymail.com/news/malaysia/2025/07/01/anwar-rides-upgraded-klia-aerotrain-says-its-good-faster-than-before/182410). *www.malaymail.com*. 1 July 2025. Retrieved 2025-07-01.

1. **[^](#cite_ref-9)** ["Fracture Toughness of Railway Track Material Using Finite Element Analysis"](https://core.ac.uk/download/pdf/159178222.pdf) (PDF). 2010. [Archived](https://web.archive.org/web/20200611093536/https://core.ac.uk/download/pdf/159178222.pdf) (PDF) from the original on 11 June 2020.

1. **[^](#cite_ref-10)** ["KLIA layout plan, guide on getting around the Kuala Lumpur International Airport"](https://www.klia2.info/klia/klia-layout-plan/,%20https://www.klia2.info/klia/klia-layout-plan/). *KLIA2*. Retrieved 11 June 2020.

1. **[^](#cite_ref-11)** ["KLIA Aerotrain Upgrade"](https://web.archive.org/web/20070927230926/http://www.virtualmalaysia.com/news/84369809-D829-4D18-875A1A8AD986569B.html). Archived from [the original](http://www.virtualmalaysia.com/news/84369809-D829-4D18-875A1A8AD986569B.html) on 27 September 2007.

1. **[^](#cite_ref-12)** ["Pestech to finance, upgrade and operate KLIA Aerotrain project for RM743m"](https://www.theedgemarkets.com/article/pestech-finance-upgrade-and-operate-klia-aerotrain-project-rm743m). 28 December 2021.

1. **[^](#cite_ref-13)** ["After coaches arrive, Anthony Loke says KLIA Aerotrain set to return by end of Jan 2025"](https://www.malaymail.com/news/malaysia/2024/09/02/after-coaches-arrive-anthony-loke-says-klia-aerotrain-set-to-return-by-end-of-jan-2025/148978). *Malay Mail*. 2024-09-02. Retrieved 2025-01-05.

1. **[^](#cite_ref-14)** Yusry, Muhammad (2025-01-15). ["Now, Loke says no definite date for KLIA's aerotrain to start service"](https://www.malaymail.com/news/malaysia/2025/01/15/now-loke-says-no-definite-date-for-klias-aerotrain-to-start-service/163297). *Malay Mail*. Retrieved 2025-01-22.

1. **[^](#cite_ref-15)** ["AEROTRAIN AT KLIA TO RESUME FULL OPERATION FOR PASSENGERS ON 23 MARCH 2011"](https://web.archive.org/web/20110722231717/http://www.klia.com.my/index.php?option=com_content&view=article&id=168&Itemid=6). *Malaysia Airports Holdings Berhad*. Archived from [the original](http://www.klia.com.my/index.php?option=com_content&view=article&id=168&Itemid=6) on 22 July 2011.

1. **[^](#cite_ref-16)** Englandsscout (2011). ["Comprehensive information regarding Aerotrain at KLIA"](https://www.tripadvisor.com.my/ShowTopic-g293951-i7006-k4025872-Comprehensive_information_regarding_Aerotrain_at_KLIA-Malaysia.html). *TripAdvisor*. Retrieved 23 June 2025.

1. **[^](#cite_ref-17)** Shahar, Fairuz Mohd (25 December 2017). ["One KLIA aerotrain resumes service, the other still undergoing maintenance"](https://www.nst.com.my/news/nation/2017/12/318258/one-klia-aerotrain-resumes-service-other-still-undergoing-maintenance). *NST Online*. [Archived](https://web.archive.org/web/20200611093539/https://www.nst.com.my/news/nation/2017/12/318258/one-klia-aerotrain-resumes-service-other-still-undergoing-maintenance) from the original on 11 June 2020. Retrieved 11 June 2020.

1. **[^](#cite_ref-18)** Vasu, Priyatharisiny (2023-03-02). ["MAHB suspends KLIA Aerotrain services until further notice"](http://www.theedgemarkets.com/node/657562). *The Edge Markets*. Retrieved 2023-03-02.

1. **[^](#cite_ref-g578_19-0)** ["KLIA Aerotrains To Be Replaced After 23 Years Of Service at Kuala Lumpur International Airport (KUL) KLIA Terminal"](https://web.archive.org/web/20220207123353/https://airports.malaysiaairports.com.my/media-centre/news/klia-aerotrains-be-replaced-after-23-years-service). *airports.malaysiaairports.com.my*. 2022-05-04. Archived from [the original](https://airports.malaysiaairports.com.my/media-centre/news/klia-aerotrains-be-replaced-after-23-years-service) on 2022-02-07. Retrieved 2025-03-23.

## External links

Wikimedia Commons has media related to [Aerotrain (KLIA)](https://commons.wikimedia.org/wiki/Category:Aerotrain_(KLIA)).

- [KLIA Aerotrain](http://www.klia.com.my/index.php?WebsiteId=13&ch=22&pg=72&ac=53)

v t e Rail transport in Malaysia Overview Fares and ticketing Token Touch 'n Go card KTMB Mobile App Komuter Link Mastercard VISA MyDebit Card Statutory authority Land Public Transport Agency (APAD) Railway Assets Corporation (RAC) Malaysia Rapid Transit Corporation (MRT Corp) Major Operators Keretapi Tanah Melayu Rapid Rail Express Rail Link Sabah State Railway Inter-city rail Main Lines Current KTM West Coast Line KTM East Coast Line Western Sabah Railway Line Future MRL East Coast Rail Link Planned HSR Kuala Lumpur–Singapore high-speed rail Trans-Borneo Railway North Eastern Sabah Railway Line Sarawak Railway Line Services KTM ETS KTM Intercity Sabah State Railway International Express Eastern & Oriental Express Commuter rail Suburban Current KTM Komuter Central 1 Batu Caves–Pulau Sebang Line 2 Tanjung Malim–Port Klang Line Northern 1 Ipoh–Butterworth Line 2 Padang Besar–Butterworth Line Southern 1 Kulai–JB Sentral Line 2 Kempas Baru–Pasir Gudang Line Planned Kita Selangor Rail Line Airport Link Current ERL 6 KLIA Ekspres 7 KLIA Transit KTM Komuter 10 KL Sentral–Terminal Skypark Line Metro rail LRT Current Rapid KL 3 Ampang Line 4 Sri Petaling Line 5 Kelana Jaya Line 11 Shah Alam Line Future LRT Mutiara Line Planned LRT Kota Kinabalu Line MRT Current Rapid KL 9 Kajang Line 12 Putrajaya Line Planned 13 Circle Line Monorail Current 8 KL Monorail Melaka Monorail (suspended) Planned 14 Putrajaya Monorail Kota Kinabalu Monorail Border link Current KTM Intercity (Shuttle Tebrau) Future RTS Johor Bahru–Singapore Rapid Transit System Other rail People mover KLIA Aerotrain Funicular Penang Hill Railway Gondola lift Langkawi Cable Car Genting Skyway Awana Skyway Penang Hill Cable Car Rolling stock & manufacturers Inter-city KTM Class 23 KTM Class 24 KTM Class 25 YDM4 KTM Class 61 DMU KTM Class 91 EMU KTM Class 93 EMU KTM Class 94 EMU Kawasaki diesel locomotives DMU Commuter KTM Class 81 EMU KTM Class 82 EMU KTM Class 83 EMU KTM Class 92 EMU Airport link CNR Changchun ERL "Equator" EMU Siemens Desiro ET 425 M Hyundai Rotem KTM Class 83 EMU LRT CRRC Zhuzhou Articulated LRV "AMY" Bombardier Innovia ART 200/Metro 300 CRRC Zhuzhou LRV MRT Siemens Inspiro "The Guiding Light" Hyundai Rotem EMU Monorail Scomi SUTRA Others Bombardier CX-100 Doppelmayr Garaventa 100-FUL Lugano–Stazione Doppelmayr Garaventa 6-MGD Leitner Ropeways 8-MGD Depots Current KTM Batu Gajah Bukit Mertajam Bukit Tengah Gemas Kempas Baru Klang Padang Besar Port Klang Rawang Sentul Seremban Sabah State Railway Tanjung Aru ERL Salak Tinggi LRT Ampang Kuala Sungai Baru Subang MRT Serdang Sungai Buloh Kajang Monorail Brickfields Aerotrain KLIA MAHB Future Johan Setia (LRT) PSR-A (LRT) Sungai Dua (LRT) Ayer Panas (MRT) Taman Midah (MRT) Related articles 2021 Kelana Jaya LRT collision

v t e Kuala Lumpur International Airport (KLIA) Terminals Terminal 1 Terminal 2 Satellite terminal A KL City Air Terminal Transport Aerotrain Express Rail Link KLIA Ekspres KLIA Transit Bus Authorities and operators Malaysia Airports Ministry of Transport Department of Civil Aviation Ministry of Home Affairs Tourist Police Ministry of Tourism Transport in Malaysia Tourism in Malaysia

---
Adapted from the Wikipedia article [Aerotrain (KLIA)](https://en.wikipedia.org/wiki/Aerotrain_(KLIA)) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Aerotrain_(KLIA)?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.