A procedural lapse on the part of MServ, a Meralco subsidiary, caused the 37-minute power interruption that occurred at the Ninoy Aquino International Airport (NAIA) Terminal 3 on Friday, a Manila International Airport Authority (MIAA) official said.
In a press briefing, MIAA acting general manager Bryan Co explained that MServ conducted a full electrical audit at NAIA-3 as part of MIAA's improvement initiative at around 7:45 AM.&nbsp;
During the audit, Co said two substations were shut down for testing. However, when airport technicians were about to re-energize the substations, test equipment was left in Substation Roadway No. 2.
&ldquo;One of MServ crew inadvertently left a test cable na naka-attached [to one of the electric equipment]. So, that caused the power shortage that affected the power system of NAIA terminal 3,&rdquo; he said.
According to MIAA's acting general manager, they were able to restore the normal Meralco power by 1:29 PM.
&ldquo;But of course, after we restore our system, some of them have to reboot and repower katulad ng ating air conditioning system na it will take 30 minutes para ma-fully power ang systems natin. Same goes sa Immigration systems and of course, our x-ray system, that&rsquo;s why there&rsquo;s a built up of passengers during that time,&rdquo; he added.&nbsp;
Co said that the personnel behind the procedural lapse would be &ldquo;dealt with accordingly.&rdquo;
He apologized to the public for the incident.
Co said no flights were canceled but seven were delayed &mdash; 5 domestic flights and 2 international flights.
This is the third time that NAIA encountered a power interruption this year.&nbsp;
On the first day of January, New Year&rsquo;s day, the Philippine airspace was shut down after a malfunction of air traffic control. A total of 282 flights were either delayed, canceled or diverted to other regional airports, affecting around 56,000 passengers.

The s<a href="https://www.dzrh.com.ph/post/naia-power-outage" target="_blank" rel="noopener">econd outage occurred</a> on May 1, Labor Day, which also caused delayed and canceled flights.

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‘Procedural lapse’ caused NAIA-3 power outage, says MIAA