Clemente spent much of his time during the off-season involved in charity work. When Managua, the capital city of Nicaragua, was affected by a massive earthquake on December 23, 1972, Clemente (who had been visiting Managua three weeks before the quake) immediately set to work arranging emergency relief flights.[35] He soon learned, however, that the aid packages on the first three flights had been diverted by corrupt officials of the Somoza government, never reaching victims of the quake.[36]
Clemente decided to accompany the fourth relief flight, hoping that his presence would ensure that the aid would be delivered to the survivors.[37] The airplane he chartered for a New Year's Eve flight, a Douglas DC-7,[38][39] had a history of mechanical problems and sub-par flight personnel, and it was overloaded by 5,000 pounds. It crashed into the ocean off the coast of Isla Verde, Puerto Rico immediately after takeoff on December 31, 1972.[40] A few days after the crash, the body of the pilot and part of the fuselage of the plane were found. An empty flight case apparently belonging to Clemente was the only personal item recovered from the plane. Clemente's teammate and close friend Manny Sanguillen was the only member of the Pirates not to attend Roberto's funeral. The catcher chose instead to dive into the waters where Clemente's plane had crashed in an effort to find his teammate.
en.wikipedia.org/wiki/Roberto_Clemente