COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Hiller UH-12 Series Helicopters
AD/HILLER 12/3 Tail Rotor Blade Assembly - Provision
of Vent Hole Applicability: All models UH-12A, UH-12B and UH-12C. Document: Hiller SIL No. 133.
Compliance: Before 15 February 1961.
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