Airworthiness Directives; Bell Helicopter Textron, Inc. Model 412 Helicopters and Agusta S.p.A Model AB 412 Helicopters; Correction
airworthiness · Rule · Final rule; correction. · Published 1998-07-20 · Effective 1998-04-08 · 63 FR 38742
Document
Document number
98-19178
Federal Register citation
63 FR 38742
Type
Rule
Action
Final rule; correction.
Category
airworthiness
Publication date
1998-07-20
Effective date
1998-04-08
FAA docket
Docket No. 97-SW-58-AD
Abstract
This document corrects a technical bulletin date in airworthiness directive (AD) 98-07-03 that was incorrectly published in the Federal Register on March 24, 1998 (63 FR 14026). This AD is applicable to Bell Helicopter Textron, Inc. Model 412 helicopters and Agusta S.p.A Model AB 412 helicopters and requires a temporary reduction of the never-exceed velocity (Vne) limitation until an inspection of the tail rotor yoke (yoke) assembly for fatigue damage and installation of a redesigned yoke flapping stop are accomplished. Recurring periodic and special inspections to detect occurrences of yoke overload are also required.