EASA AD 2021-0165-E
SUPERSEDED BY EASA AD 2022-0052-E
EASA Airworthiness Directive 2021-0165-E is an emergency directive addressing safety concerns for Leonardo S.p.A. AB204B, AB205A-1, and AB212 helicopters. It targets the main rotor hub strap pins (MRHSP) with part number 204-012-104-005 and serial numbers beginning with 'FNFS', which have shown premature failure. The directive mandates immediate replacement of these affected parts to prevent main rotor blade detachment.