AircraftDirectives
Airworthiness Directive

AD 2016-26-04 82 FR 716

Federal Aviation Administration · 14 CFR part 39

FR document
2016-30832
Amendment
39-18762
Published
2017-01-04
Models covered
2
Last live check
2026-08-17

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AD

2016-26-04

FR doc 2016-30832 · 82 FR 716

AD 2016-26-04Published 2017-01-04Effective 2017-02-08

Requires inspecting the main rotor blade (MRB).

Full official abstract

We are adopting a new airworthiness directive (AD) for Robinson Helicopter Company (Robinson) Model R44, R44 II, and R66 helicopters. This AD requires inspecting the main rotor blade (MRB). This AD was prompted by a determination that some MRBs may have reduced blade thickness due to blending out corrosion. The actions are intended to prevent the unsafe condition on these products.

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Applies to 2 models in our index