The airplane registration A-1325 had been on a normal flight transporting military personnel and their families from Jakarta to a military base in eastern Java .
The airplane is a civilian Lockheed L - 100 - 30 ( P ) version of the C - 130 Hercules .
The airplane , a civilian Lockheed L - 100 - 30 ( P ) version of the C - 130 Hercules , registration A-1325 had been on a normal flight transporting military personnel and their families from Jakarta to a military base in eastern Java .