A military aircraft flying Defense Secretary Delfin Lorenzana and Armed Forces chief Gen. Eduardo Año over the West Philippine Sea received a warning yesterday from Chinese forces to leave the airspace. The Philippine Air Force (PAF) C-130 transport aircraft was circling over Zamora or Subi Reef for its final approach to the unpaved Rancudo airfield on Pag-Asa Island in the Spratlys when it received a radio warning from the Chinese to stay away from the area. The PAF pilot responded that the aircraft was flying in Philippine airspace.

Laude, J., Punongbayan, M., Macairan, E., Flores, H., & Romero, A. (2017, April 22). Chinese challenge Phl defense chief's plane. Philippine Star, pp. 1, 6.