COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Bell Helicopter Textron 47 (All Variants) Series Helicopters AD/BELL 47/66 Amdt 4 Applicability: All models. Stabilizer Bar Tubes and Assembly 10/86 Document: Bell SB No. 47-(04-2)-73-1, Rev. A. Kawasaki-Bell S.B. KSB-Bell 338. Compliance: As per Requirement Document. Note: This inspection may be accomplished by the pilot-in-command, in which case the precise A.D. reference shall be entered in a certification made on the maintenance release coincident with that for the daily inspection. This inspection may also be performed and certified by any Licensed Aircraft Maintenance Engineer. Background: To detect cracked stabilizer bar tubes and/or tie rods that are in tension. This Directive has been amended to include Kawasaki-Bell Helicopters.