Passengers at Kuala Lumpur International Airport (KLIA) began their Sunday, 9 July 2023, by queueing for shuttle buses after the automated people-mover that links the main terminal and satellite building broke down again, leaving travellers stranded and ministers who had promised a permanent fix nowhere in sight.
Faulty trains and long walks
The 1.2-km Aerotrain went offline at 06:15 local time when a software fault triggered an emergency brake on one of the two cars, according to Malaysia Airports Berhad (MAB). Technicians rebooted the system, but a second fault recurred an hour later, prompting the airport operator to suspend the service for the rest of the day. With no rail link, passengers had to ride 30-seat buses or walk 400 m along a service corridor normally closed to the public. Flight crews also used the corridor, wheeling cabin bags behind them.
MAB said 62 flights were delayed more than 30 minutes because travellers reached the departure gates late. The backlog peaked around 11:00, when buses could only move 350 people every ten minutes against a normal Aerotrain capacity of 3,000. “We landed at 07:30 and spent 40 minutes in a bus queue,” said Singapore-based consultant Lydia Ng, 42, who was travelling with two children. “My son counted 11 broken-escalator stickers while we waited. It felt like the airport itself was stuck in 1998.”
Repairs promised, ministers absent
Transport Minister Anthony Loke had told reporters on 22 May that the ageing system would be “fully overhauled” before the July school-holiday rush. Works were budgeted at RM55 million and supposed to start in June. Yet on the day of the failure neither Loke nor any deputy minister appeared at the terminal. The ministry’s official Instagram account instead posted a three-line statement wishing Muslims a blessed Dhul Hijjah.
Deputy transport minister Hasbi Habibollah was in Kuching for a road-safety campaign, his office confirmed when contacted. Loke’s press aide said the minister was “monitoring the situation” and would visit only after receiving a full technical report. Opposition MP Wong Chen called the absence unacceptable. “The rakyat deserve to see the person who made the promise,” Wong told reporters at the airport. “If a minister can campaign in six states he can surely ride a broken train.”
A 25-year-old system under strain
The Aerotrain opened in 1998 with the rest of KLIA, then billed as a regional hub to rival Singapore and Bangkok. Each of the two Mitsubishi-built cars was designed for a 20-year life and 130,000 operating hours. MAB data show the fleet logged 160,000 hours by 2020, and pandemic-delayed maintenance pushed that figure past 170,000 this year. Spare parts are scarce; Mitsubishi Heavy Industries exited the automated-train business in 2005.
A reliability audit commissioned last December found the control software “no longer supported by any vendor” and recommended a full replacement within 18 months. Instead, MAB opted for phased repairs to keep costs down. Sunday’s failure originated in the legacy signalling module, the same component flagged in the audit. Airport workers say both cars have been limping on borrowed time. “We reboot at least once a shift,” a train technician told InfoPulseToday on condition of anonymity because staff are barred from speaking to media. “Everyone knows the day will come when the reboot doesn’t work.”
Passengers lose patience, alternatives weighed
By midday frustrated travellers had posted more than 8,000 tweets with the hashtag #AerotrainDown, some tagging Singapore’s Changi to boast of its reliability. Aviation analyst Shukor Yusof said reputational damage spreads fast. “KLIA markets itself as a hub, but hubs can’t have single-point failures,” he said. “Airlines watch social media too; if they sense chronic risk they’ll move connecting traffic elsewhere.”
Malaysia Airlines issued a waiver allowing rebooking for passengers who missed connections, while AirAsia said it would consider shifting some Kota Kinabalu-Taipei transits to klia2, which uses a different satellite system. The board of airport workers’ union Kesatuan Pekerja Penerbangan Malaysia urged management to accelerate a parallel plan for a cable-car link shelved in 2019 over cost concerns. “We raised this in April,” union secretary S. Parameswaran said. “A rope-way can be built in 14 months and costs half a new train. The technology is proven at airports in India and Turkey.”
MAB chief executive Iskandar Mizal Mahmood visited the site late Sunday and promised “no shortcuts” on a permanent fix. He said the airport will hire an independent consultant within two weeks and aims to issue a tender for either new vehicles or an entirely different system by September. Until then buses will run every four minutes and express lanes will open for passengers with tight connections. Whether that will be enough to restore confidence depends on how quickly the next failure comes and whether ministers show up when it does.
