Airworthiness Directives; Boeing Model 747-100, -200, -300, -400, and 747SR Series Airplanes
airworthiness · Rule · Final rule. · Published 2001-02-21 · Effective 2001-03-28 · 66 FR 10951
Document
Document number
01-3699
Federal Register citation
66 FR 10951
Type
Rule
Action
Final rule.
Category
airworthiness
Publication date
2001-02-21
Effective date
2001-03-28
FAA docket
Docket No. 99-NM-206-AD
Abstract
This amendment adopts a new airworthiness directive (AD); applicable to all Boeing Model 747-100, -200, -300, -400, and 747SR series airplanes; that requires a one-time inspection to determine whether H-11 steel bolts are installed as attach and support bolts at the trailing edge flap transmissions, and replacement of any H-11 steel bolt with an Inconel bolt. The actions specified by this AD are intended to prevent loss of a flap transmission, which could reduce lateral controllability of the airplane.