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 206/19 Amdt 1 Tail Rotor Pedal Controls - Inspection 6/70 Applicability: All model AB-206A fitted with hydraulically boosted tail rotor pitch control; and All model 206A with S/Nos. 4 to 497. Requirement: Check the tail rotor pedal spring and friction adjustment and re- adjust as necessary in accordance with the requirements of Section IV the Maintenance and Overhaul Instructions. Compliance: At intervals not exceeding 100 hours time in service. Background: AD/Agusta 206/10A equivalent.