What happened
On October 27, 2012, a Bell 206B helicopter, registered as TG-PPR, was involved in an accident in the vicinity of Nueva Concepción, Escuintla, Guatemala. The aircraft was operating in the region during a period of developing convective activity. Meteorological reports from the nearby Puerto San José station indicated that by 09:00 hours, the area was experiencing powerful towering cumulus clouds (TCU) originating from the east, southeast, and south.
The investigation
The investigation conducted by the Unidad de Investigación de Accidentes (UIA) of the DGAC examined the aircraft's maintenance history, meteorological conditions, and the impact site. The investigation reviewed the aircraft's airworthiness certificates, noting that the helicopter had been inspected and cleared for flight by an approved maintenance organization. The records showed the aircraft was undergoing regular maintenance and that the engines and rotors had documented flight hours and overhaul cycles.
Investigators also analyzed weather data provided by the National Institute of Seismology, Volcanology, Meteorology, and Hydrology (INSIVUMEH). The data revealed that while visibility was unlimited, the presence of significant convective clouds was increasing in the area during the morning of the accident.