Airworthiness Directives; McDonnell Douglas Model DC-9-14, DC-9-15, and DC-9-15F Airplanes; and McDonnell Douglas Model DC-9-20, DC-9-30, DC-9-40, and DC-9-50 Series Airplanes
airworthiness · Rule · Final rule. · Published 2005-09-16 · Effective 2005-10-21 · 70 FR 54616
Document
Document number
05-18314
Federal Register citation
70 FR 54616
Type
Rule
Action
Final rule.
Category
airworthiness
Publication date
2005-09-16
Effective date
2005-10-21
FAA docket
Docket No. FAA-2005-21140
Abstract
The FAA is adopting a new airworthiness directive (AD) for all transport category airplanes listed above. This AD requires repetitive inspections for cracks of the main landing gear (MLG) shock strut cylinder, and related investigative and corrective actions if necessary. This AD results from two reports of a collapsed MLG and a report of cracks in two MLG cylinders. We are issuing this AD to detect and correct fatigue cracks in the shock strut cylinder of the MLG, which could result in a collapsed MLG during takeoff or landing, and possible reduced structural integrity of the airplane.