CASA SUP - AWB 01-038 Issue 1 - Bell Helicopters 206, 214ST, and 505 - Main Rotor Blade Retaining Bolt Nut

On 27 November 2023, the Civil Aviation Safety Authority (CASA) of Australia published an Airworthiness Bulletin (AWB 01-038 Issue 1) to advise operators and maintenance repair organisations of a suspected unapproved part that has been supplied to industry in lieu of Original Equipment Manufacturer (OEM) PN 206-011-119-005 and Federal Aviation Administration (FAA) Parts Manufacturing Approval (PMA) PN 2AA-011-119-005 1, that could potentially compromise the structural integrity of the main rotor hub assembly.

For more details please refer to the AWB 01-038 Issue 1.