No he is not. LTC Bautista is a member of class 1958 of the Philippine Air Force Flying School, a former Aviation Cadet. His source of commission is equal to that of the PMA and those who graduated from US Armed Forces Academies as the AFP's first priority source of regular officers. Based on Republic Act 291.
LTC Bautista was killed in action near Jolo Airport on 09 January 1974. His F-86 Sabre was damaged during a strike mission around that area. Upon returning to Jolo Airport, he was unable to land his jet and so he decided to eject over the runway. But unfortunately, when his parachute opened strong winds brought him towards the rebel area near the airport. After descending he fought for his life, UH-1H Hueys (One of them flown by the future Commander of the Philippine Air Force, Benjamin Defensor) and ground troops attempted to rescue LTC Bautista but they were slowed down by fierce resistance. By the time they reached his, he was already dead. In honor of his sacrifice the PAF base at Puerto Princesa, Palawan is named after him.