Background
According to the official investigation, the pilot and a pilot-rated passenger received vectors for multiple instrument landing system (ILS) approaches in deteriorating conditions.
Accident Sequence
On the first approach attempt, the aircraft passed over witnesses but was off course and not in a position to land. The second attempt was aborted before reaching the airport. During the third approach, radar service was terminated and the pilot was given a frequency change. The aircraft subsequently crashed into water approximately one mile from the runway.
Post-Accident Findings
A post-accident examination did not disclose any malfunction with the aircraft systems. Both engines were test-run to full power and operated normally. The investigation disclosed that neither pilot was FAR Part 135 qualified for this flight. Furthermore, the aircraft was being operated with engines exceeding their time between overhauls (TBO), an overdue transponder test, and an overdue 100-hour inspection. The pilots did not report any difficulties with the aircraft prior to impact.