Transportation Department, Federal Aviation Administration
The FAA is superseding an existing airworthiness directive (AD), which applies to certain Aerospatiale Model ATR42-500 and ATR72- 212A series airplanes, that requires repetitive inspections for cracking of the upper closing rib of the vertical fin, related investigative actions, and corrective actions if necessary. This new AD requires modifying the installation of the vertical leading edge fairing at the fin tip, which ends the repetitive inspections. This AD results from a report that rudder operation difficulties occurred on a Model ATR42-500 series airplane while the airplane was on the ground. We are issuing this AD to prevent interference between the upper closing rib and the rudder, which could result in a rudder jam and consequent reduced controllability of the airplane.
Document Headings Document headings vary by document type but may contain the following: the agency or agencies that issued and signed a document the number of the CFR title and the number of each part the document amends, proposes to amend, or is directly related to the agency docket number / agency internal file number the RIN which identifies each regulatory action listed in the Unified Agenda of Federal Regulatory and Deregulatory Actions See the Document Drafting Handbook for more details. Department of Transportation Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2006-25610; Directorate Identifier 2005-NM-260-AD; Amendment 39-14727; AD 2006-17-06] RIN 2120-AA64 AGENCY: Federal Aviation Administration (FAA), Department of Transportation (DOT). ACTION: Final rule; request for comments. SUMMARY: The FAA is superseding an existing airworthiness directive (AD), which applies to certain Aerospatiale Model ATR42-500 and ATR72-212A series airplanes, that requires repetitive inspections for cracking of the upper closing rib of the vertical fin, related investigative actions, and corrective actions if necessary. This new AD requires modifying the installation of the vertical leading edge fairing at the fin tip, which ends the repetitive inspections. This AD results from a report that rudder operation difficulties occurred on a Model ATR42-500 series airplane while the airplane was on the ground. We are issuing this AD to prevent interference between the upper closing rib and the rudder, which could result in a rudder jam and consequent reduced controllability of the airplane. DATES: This AD becomes effective September 5, 2006. The Director of the Federal Register approved the incorporation by reference of certain publications listed in the AD as of September 5, 2006. On July 22, 2004 ( 69 FR 33834 , June 17, 2004), the Director of the Federal Register approved the incorporation by reference of certain other publications listed in the AD. We must receive …
Citation: 71 FR 48466
