Airworthiness Directives; Boeing Model 747SP Series Airplanes
airworthiness · Rule · Final rule. · Published 2008-11-12 · Effective 2008-12-17 · 73 FR 66737
Document
Document number
E8-25689
Federal Register citation
73 FR 66737
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
Boeing Model 747SP Series
Publication date
2008-11-12
Effective date
2008-12-17
FAA docket
Docket No. FAA-2008-0585
Abstract
We are adopting a new airworthiness directive (AD) for all Boeing Model 747SP series airplanes. This AD requires repetitive lubrication of the rudder tab hinges and repetitive replacement of the rudder tab control rods. This AD results from reports of freeplay- induced vibration on the control surfaces on Boeing Model 727, 737, 757, and 767 airplanes. We are issuing this AD to prevent damage to the control surface structure during flight, which could result in loss of control of the airplane.