Airworthiness Directive

AD 2013-16-16 78 FR 49113 Active

Federal Aviation Administration · 14 CFR part 39

Requires adding a life limit of 10,000 landings to the crosstube and removing from service any crosstubes with more than 10,000 accumulated landings.

FR document
2013-19434
Amendment
39-17554
Published
2013-08-13
Effective
2013-09-17
Models covered
1

Last live check: 2026-10-04

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AD

2013-16-16

FR doc 2013-19434 · 78 FR 49113

AD 2013-16-16Published 2013-08-13Effective 2013-09-17

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.

Requires adding a life limit of 10,000 landings to the crosstube and removing from service any crosstubes with more than 10,000 accumulated landings.

Full official abstract

We are adopting a new airworthiness directive (AD) for Agusta S.p.A. (Agusta) Model AB412 and AB412 EP, and Bell Helicopter Textron (Bell) Model 412, 412CF, and 412EP helicopters with certain DART Aerospace Ltd. (Dart) high gear aft crosstubes (crosstube) installed. This AD requires adding a life limit of 10,000 landings to the crosstube and removing from service any crosstubes with more than 10,000 accumulated landings. This AD is prompted by five separate reports of crosstube failures. The actions in this AD are intended to prevent failure of the crosstube and subsequent collapse of the landing gear.

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All Bell 412 directives

Applies to 1 model in our index