Document ID: chunk:federal_register_of_legislation:F2008L03774:body:0:p3
Version: federal_register_of_legislation:F2008L03774
Segment Type: other
Provision Reference: 
Character Range: 6797–7674

of each inspection detailed in Requirements 1 and 2 of this AD.
             This Airworthiness Directive becomes effective on 13 October 2008.
Background:  During scheduled maintenance inspection, a bolt which connects the PCU to the elevator surface was found fractured in the assembly.  Further inspection of the assembly revealed that the bearing on the PCU rod end had seized which resulted in damage to the attachment fitting bushing and fracture of the bolt.  Inspection of other in-service airplanes revealed two more seized PCU attachment joints.  However, except seizure, no fractured bolt was found on these airplanes.  Failure of the bolts in both PCUs on one side could result in disconnection of the elevator control surface which would lead to flutter and loss of the aircraft.

Charles Lenarcic
Delegate of the Civil Aviation Safety Authority

10 October 2008