Ninoy Aquino International Airport (NAIA) in the Philippines has replaced the faulty navigational equipment that lead to the cancellation of 14 domestic flights, stranding 3,000 passengers on 19 June.

The very high frequency omni-directional radio range (VOR), which guides aircraft to the runway, especially during poor visibility, has now been replaced with equipment used by the Subic International Airport at NAIA runway 06-24.

Purchased by CAAP 14 years ago, the old VOR located between the two runways of the NAIA was scheduled for replacement in 2011, according to

It automatically guides pilots for landings and takeoff, sends signals to aircraft to guide them to the airport and the runway and plays an important role in night-time landings.

Manila International Airport Authority general manager Melvin Matibag said the equipment experienced technical problems because of heavy rain.