Ninoy Aquino international airport in Philippines remained on reduced operations on Monday after a New Year power outage that jolted its air traffic control, with authorities scrambling to resume full service after more than 300 flights were disrupted.
The ageing airport was early on Monday handling a maximum 15 arrivals per hour compared to 20 during normal operations, said Cesar Chiong, general manager of the Manila International Airport Authority.
The outage was the result of the unprecedented failure of both primary and secondary power supplies, he said.
"It will take around 72 hours or thereabout for the airlines to normalise their operations," Chiong told ANC news channel.
There were 361 flights either delayed, cancelled or diverted to other regional airports on Sunday, affecting about 65,000 passengers, while numerous other flights were forced to re-route to avoid Philippine airspace.
Flag carrier Philippine Airlines said it was arranging recovery flights out of the United States, Singapore and Malaysia and diverting some flights to domestic airports. Budget carrier Cebu Pacific cancelled 54 domestic flights on Monday.
Chiong said the airport had introduced its own power system in 2018 but on Sunday, both the main and backup systems failed.
When they connected directly to the regular commercial electricity, they experienced over-voltage and power surge, he added, forcing equipment to fail including radar, communications, radio and internet.
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