Bell 407 – Missed Tool Caused Main Rotor Damage
Maintenance was being performed on a rotor head of a nearby helicopter. The pilot and maintenance person did not do a thorough enough check on prelfight and started the helicopter up with a tool left on the rotor head… The tool departed the rotor head and went through a nearby helicopter's blade and hit a different helicopter on the the fuselage.
Maintenance Notes
Outcome: Grounded
Always do a thorough preflight after/during Mx and account for all tools…
These notes reflect reported observations at the time of submission and are provided for educational purposes only. They are not a determination of airworthiness and do not constitute maintenance or regulatory advice.
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