Airworthiness Directive

AD 2010-26-51 76 FR 13059 Active

Federal Aviation Administration · 14 CFR part 39

Prompted by another incident in which the tail rotor blade (blade) tip weight separated from a blade during flight causing vibration.

FR document
2011-4465
Amendment
39-16587
Published
2011-03-10
Effective
2011-03-25
Models covered
6

Last live check: 2026-10-04

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AD

2010-26-51

FR doc 2011-4465 · 76 FR 13059

AD 2010-26-51Published 2011-03-10Effective 2011-03-25

Supersedes 2009-08-03

Supersedence is read from the Federal Register text of the newer AD — the FAA publishes no structured field for it — and names only ADs held in our index.

FAA rule - 14 CFR 39

FAA rule. Compliance with an applicable AD is required under 14 CFR 39.7. Check its effective date, applicability, compliance times and current status.

Prompted by another incident in which the tail rotor blade (blade) tip weight separated from a blade during flight causing vibration.

Full official abstract

This document publishes in the Federal Register an amendment adopting Emergency Airworthiness Directive (AD) 2010-26-51, which was sent previously to all known U.S. owners and operators of the specified model helicopters by individual letters. This AD also supersedes existing AD 2009-08-03. This AD is prompted by another incident in which the tail rotor blade (blade) tip weight separated from a blade during flight causing vibration. This unsafe condition led to the determination that additional blades could be affected and should be added to the applicability. The actions specified by this AD are intended to prevent loss of the blade tip weight, loss of a blade, and subsequent loss of control of the helicopter.

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Applies to 6 models in our index