Accident Overview
On September 25, 1999, at approximately 1726 Hawaiian standard time, Big Island Air flight 58, a Piper PA-31-350 (Chieftain) registered as N411WL, crashed on the northeast slope of the Mauna Loa volcano near Volcano, Hawaii. The pilot and all nine passengers aboard were killed, and the aircraft was destroyed by impact forces and a postimpact fire. The flight was operating under 14 Code of Federal Regulations Part 135 as an on-demand air taxi sightseeing tour.
Flight Details
The flight departed Keahole-Kona International Airport in Kona, Hawaii, at about 1622. A visual flight rules (VFR) flight plan had been filed. At the time of departure, visual meteorological conditions (VMC) existed at the airport. However, the subsequent investigation determined that instrument meteorological conditions (IMC) prevailed in the vicinity of the accident site.
Investigation
The National Transportation Safety Board (NTSB) investigated the accident, with the full report available as NTSB/AAB-01-02. No probable cause was stated in the provided summary.