While the management of the Ninoy Aquino International Airport (NAIA) is looking for ways of how to drive away birds that flock at the airport, Philippine Airlines (PAL) reported on Thursday that another PAL plane suffered bird strike—a recurring woe that costs the global airline industry $1 billion annually.

PAL communications for corporate affairs said that PAL’s twin-engine Airbus A319’s engine number 1 suddenly sucked stray birds shortly after takeoff on Wednesday.

Flight PR-189 bound for Roxas City with 104 passengers onboard, continued to fly to Roxas airport. The plane went thorough maintenance inspection from mechanics that were sent to Roxas following the discovery of the bird strike.

No serious damage had seen on the plane, PAL reported. But its return flight with 84 passengers was delayed for five hours.

PAL said that the incident happened only in less than two days after birds, on October 23, collided with PAL’s Airbus A320 upon landing at the NAIA runway, which came from Bacolod.

Aircraft inspectors discovered bloodstains on the aircraft’s wing and two CFM jet engines.

It said that the number of bird strikes at NAIA have been steadily increasing over the past months as reported by PAL and other airlines operating in Manila’s premiere international airport, despite efforts by the Manila International Airport Authority (MIAA) to drive away birds from occupying the grassy portion of the airport.

Reports said that airport authorities are improving the airport’s runway and its drainage system to ensure that there are no open waterways within the NAIA that could attract birds from nearby areas.

Recently, the airport authority announced that they are mulling to acquire a whopping P45 million sound device that will scare away birds from the airfield. The sound device with two powerful speakers should be in place before February 2013, as it reported.

MIAA is also planning to invest some P23-million to cover an artificial pond found between the runways. The artificial pond absorbs the excess water coming from the runway, thus preventing their flooding.

The so-called bird aircraft strike hazard issue is an industry-wide problem not only in the Philippines, but also worldwide. Bird strike incidents, translates to an annual $1 billion cost of damage to aircraft engines, based on industry estimate.