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Robinson Helicopter's R22 and R44 models main rotor blade delaminations have become the subject of Federal Aviation Administration's (FAA) Airworthiness Directive (AD) 2007-26-12, superseding the Company's Service Bulletin.
The AD states that main rotor blade skins begin to delaminate, debond, or separate the ski near the blade tip. This delamination or debonding can occur when the bond line is exposed due to excessive erosion of the blade finish, or when corrosion occurs on the internal aluminum tip cap. Read more...Post a Comment to "Robinson Helicopter’s R22 and R44 models main rotor blade delaminations have become the subject of a FAA Airworthiness Directive"
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