Document ID: chunk:federal_register_of_legislation:F2006B10736:body:0
Version: federal_register_of_legislation:F2006B10736
Segment Type: other
Provision Reference: 
Character Range: 0–1414

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
 SCHEDULE OF AIRWORTHINESS DIRECTIVES

 McDonnell Douglas (Hughes) and Kawasaki 369 Series Helicopters

 AD/HU 369/71 Tail Rotor Transmission Mounting Studs 13/87

TLX

 Applicability: All model 369D, 369E, 369F and 369FF series helicopters.

            Requirement: Action in accordance with McDonnell Douglas SIN No DN-151, EN-39, FN-28, as applicable.

 Compliance: Part 1 of Requirement document - unless already accomplished, prior to next flight.

            Part 2 of Requirement document - during each pilot's preflight inspection.

            Part 3 of Requirement document - unless already accomplished, within 25 hours time in service or by 20 November 1987 whichever occurs first.

            Part 4 of Requirement document - prior to each issue or a new Maintenance Release after 20 November 1987.

            Note: The Part 2 inspection may be accomplished by the pilot in command in which case he shall enter and certify for this AD in Col 2 Part 3 of the Maintenance Release on each occasion.

            Background:  There have been several reported instances where some or all tail rotor transmission mounting studs have failed with indications of bending fatigue. Also, movement between the T/R gearbox and mounting bracket has occurred due to loss of mounting stud nut torque.