![](https://imageresizer.static9.net.au/f0cWkEQO_Nz5zNLtXcQQQmXSRm4=/750x0/https%3A%2F%2F1.800.gay%3A443%2Fhttps%2Fvms-network-images-prod.s3-ap-southeast-2.amazonaws.com%2F2024%2F02%2F567515%2Fs-st22-wtdy-iso2-04-feb-2024-76_frame_26711.jpeg)
The report does not cite a suspected cause of the crash, but noted one goose was found in the helicopter's flight control system and others were found in the debris field.
A report on the probable cause could take up to two years to complete, according to the NTSB.
The helicopter crashed on January 20 in a pasture near Hydro, about 97 kilometres west of Oklahoma City, as it was returning to Weatherford after taking a patient to an Oklahoma City hospital.
The pilot and both Air Evac Lifeteam crew members, a flight nurse and a paramedic, were killed.