A Russian cargo plane sent three US helicopters in Davao City on Wednesday. Engr. Rex Obsena, airport manager, said in an interview that Antonov, a Russian transporter plane, landed at F. Bangoy International Airport at around 10:30 a.m. on Wednesday from Sri Lanka and left for Nagoya, Japan at 5am on Thursday. Russian aircraft were scheduled to land at Zamboanga International Airport but had to change entry / exit permits because the airport could not accommodate because of its size, he said. Obsena said he could not confirm whether the three helicopters were purchased by the Philippine government or donated by the US government.