Emergency AD Was Prompted By A Bell Model 212 Helicopter Fatal Accident
Emergency Airworthiness Directive (AD) 2021-15-51 is sent to owners and operators of Bell Textron Inc. (type certificate previously held by Bell Helicopter Textron Inc.) (Bell) Model 204B, 205A, 205A-1, 205B, and 212 helicopters. This emergency AD was prompted by a Bell Model 212 helicopter fatal accident in which an outboard main rotor hub strap pin (pin), part number (P/N) 204-012-104-005 with a serial number (S/N) prefix “FNFS”, sheared off during flight, which resulted in the main rotor blade and the main rotor head detaching from the helicopter. The pin had accumulated only 20 total hours time-in-service (TIS).
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