What happened
On May 24, 2017, at approximately 06:21 local time, a Cessna U206G, registration CP-2846, crashed in a forested region of the Itenez province, roughly 86 miles from Trinidad, Bolivia. The aircraft had departed from El Trompillo airport in Santa Cruz with a flight plan intended for Carmen del Itenez.
The accident was first identified when the aircraft's Emergency Locator Transmitter (ELT) activated, signaling a high-impact event. Search efforts eventually located the wreckage in an inaccessible jungle area near the Puesto El Carmen landing strip. The impact occurred at a 45-degree angle against trees approximately 20 to 30 meters high, causing extensive damage to the propeller, engine, instrument panel, and fuselage. Both occupants, the pilot and a passenger, sustained fatal injuries upon impact.
The investigation
The Bolivian DGAC investigation examined the wreckage, maintenance records, and meteorological data. Investigators noted that the aircraft's position indicated a frontal descent into the trees. While the pilot was a highly experienced commercial pilot with 9,000 total flight hours, the investigation focused on the mechanical state of the engine and the environmental conditions at the time of the crash.
Findings
- A probable engine failure, specifically involving a potential failure in the engine oil system, led to a loss of power during the cruise phase.
- Adverse meteorological conditions, including heavy fog and visibility limited to only 100 meters, prevented the pilot from locating a suitable clearing for an emergency landing.
- The flight was conducted under Visual Flight Rules (VFR) during hours and weather conditions that were unsuitable for such operations.
- Inadequate flight planning was noted, as the operator had planned a destination at an aerodrome not certified by the AAC.
Safety action
- The DGAC recommended that the Operational Safety Directorate establish accident prevention programs specifically for general aviation through seminars and courses.
- Authorities should implement stricter verification of flight proficiency updates (Flight Review) for general aviation pilots.
- Increased auditing of authorized maintenance organizations is required to ensure strict compliance with Bolivian Aeronautical Regulations.
- The Air Navigation Directorate should enhance monitoring of arrival and departure notifications for general aviation aircraft operating at uncontrolled strips.