The announcement follows reports of a power outage at the terminal on Saturday, which FAAN said was caused by a fault in the changeover circuit.
In a statement posted on X on Sunday, the authority explained that while immediate measures were taken to restore power, installing permanent backup equipment is not feasible at this stage due to the upcoming renovation works.
“Our teams took immediate action to bridge the gap and transfer supply to the secondary grid, and interim backup measures were activated to restore services as quickly as possible,” FAAN said.
The agency added that Terminal 1 has long-standing infrastructure limitations and that the planned shutdown is part of the MMIA Rehabilitation and Expansion Project.
“We apologise to all passengers and stakeholders affected by the disruption and any discomfort it caused,” FAAN said, adding that the authority is working to transition “from stop-gap solutions to lasting improvements.”
FAAN also reaffirmed its commitment to delivering a safer and more reliable passenger experience as the project progresses.
Power disruptions at MMIA have been recurring, with several incidents reported in 2018, 2024, and 2026. FAAN confirmed a major blackout in 2024 that left passengers stranded at the airport.
In August 2025, the Federal Executive Council approved contracts totaling over N900 billion for aviation infrastructure upgrades, with the full rehabilitation, upgrade, and modernisation of MMIA’s Terminal 1 identified as a central project.
FAAN later announced on September 4, 2025, that reconstruction works at the airport had commenced.
As the terminal prepares for shutdown, passengers and stakeholders have been urged to stay informed on travel advisories and alternative arrangements as FAAN moves ahead with the upgrade project.