Airworthiness Directive · Amendment 39-9493 · McDonnell Douglas Corporation Airplanes
McDonnell Douglas Corporation Airplanes
Superseded. A later AD replaced this one: AD 2001-24-27. Comply with the one in force.
This AD applies to McDonnell Douglas Corporation DC-9-11, DC-9-12, DC-9-13, DC-9-14, DC-9-15, DC-9-15F, DC-9-21, DC-9-31, DC-9-32, DC-9-32 (VC-9C), DC-9-32F, DC-9-32F (C-9A), DC-9-32F (C-9B), DC-9-33F, DC-9-34, DC-9-34F, DC-9-41, DC-9-51, DC-9-81, DC-9-82, DC-9-83, DC-9-87, MD-88.
The models as the FAA's AD index lists them. The serial ranges, installed parts and exceptions are in the AD itself: read it at the FAA.
This amendment supersedes an existing airworthiness directive (AD), applicable to certain McDonnell Douglas Model DC-9 and Model DC-9-80 series airplanes; Model MD-88 airplanes; and C-9 (military) series airplanes, that currently requires visual and eddy current inspections to detect cracking of the rudder pedals adjuster hub assembly, and replacement of the assembly, if necessary. That amendment was prompted by several occurrences of failure of the rudder pedals adjuster hub assembly due to broken detent lugs. This amendment provides an optional terminating action for the required inspections, and expands the applicability of the existing AD to include additional airplanes. The actions specified by this AD are intended to prevent loss of rudder pedals control and reduction of braking capability.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
