https://aviationweek.com/business-aviation/erickson-secures-composite-main-rotor-blade-approvals-faa
Erickson has secured FAA approval for a composite main rotor blade for its S-64 Aircrane heavy lift helicopter.
main rotorericksonsecurescompositeblade
https://www.flightglobal.com/boeing-flies-first-block-iii-apache-composite-main-rotor-prototypes/81378.article
The US Army's Boeing AH-64D Block III upgrade programme has taken a quantum leap forward with the
main rotorboeingfliesfirstblock
https://www.telegraphindia.com/india/uttarakhand-chopper-crash-main-rotor-blade-struck-overhead-cable-says-investigation-report/cid/2114147
In its five-page report, Aircraft Accident Investigation Bureau said the helicopter flew for 20 minutes before descending from its assigned altitude
helicopter crashmain rotoruttarkashiuttarakhandchopper