CAAP oversight office probing power supply problem that closed Philippine airspace
The power supply problem which effectively closed down the Philippine airspace on New Year"s Day is now being investigated by the Civil Aviation Authority of the Philippines" Aerodrome and Air Navigation Safety Oversight Office.
Philippine Times 
The power supply problem which effectively closed down the Philippine airspace on New Year"s Day is now being investigated by the Civil Aviation Authority of the Philippines" Aerodrome and Air Navigation Safety Oversight Office.
