On June 26, 1987, the Hawker Siddeley HS 748 crashed onto a mountain en route to Baguio, killing all 50 people on board.

Flight 206 had crashed onto the fog-shrouded slopes of Mount Ugu, a 2,086-meter-high (6,844 ft) mountain located between Itogon, Benguet and Kayapa, Nueva Vizcaya.

[4] The crash site was located around 180 meters below the summit of Mount Ugu, and 15 kilometers south of Loakan Airport.

Most of the fatalities were Filipinos, including Catholic Bishop Bienvenido Tudtud, Prelate of Marawi City,[5] and Gloria Mapua-Lim, wife of then-Philippine Airlines executive vice-president Roberto Lim.

[6] At least one American citizen, John Neill who was then the Managing Director of Texas Instruments Philippines in Baguio, died in the crash.