COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Bell Helicopter Textron Canada (BHTC) 206 and Agusta Bell 206 Series Helicopters AD/BELL 206/98 Main Rotor Blade - Inspection 5/85 TX Applicability: All models 206L and 206L-1 with S/Nos 45001 to 45790 and 46601 to 46617. All model 206L-3 with S/Nos 51001 to 51109, 51111 to 51117 and 51119 to 51124. Requirement: Bell Alert Service Bulletin No. 206L-85-35. Compliance: PART 1: At each daily inspection after 22 March 1985 until compliance with Part 2. Note: This inspection may be accomplished by the pilot in command in which case he/she shall enter and certify for this AD in Col. 2 Part 3 of the Maintenance Release on each occasion. PART 2: Prior to 1 June 1985. Background: The manufacturer reports cases of chordwise cracking.