Commonwealth legislation

AD/HILLER 12/33 - Tail Rotor Blade P/N 55073 - Inspection

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

2/10 complexity

The directive requires daily/overnight inspections of tail-rotor blades P/N 55073 on Hiller UH‑12 helicopters to check for obstructed vent holes (per Hiller Aviation SB No. 55‑1). It lets the pilot in command perform and certify the check, placing routine inspection responsibility on operators to clean or seek maintenance if obstructions are found.

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Direct links to the current provisions in AD/HILLER 12/33 - Tail Rotor Blade P/N 55073 - Inspection.

AD/HILLER 12/33 - Tail Rotor Blade P/N 55073 - Inspection

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

View image in the official source Hiller UH-12 Series Helicopters

AD/HILLER 12/33 Tail Rotor Blade P/N 55073 - Inspection 11/81

Applicability: All UH-12 series fitted with tail rotor blades P/N. 55073. Document: Hiller Aviation SB No. 55-1.

Compliance: At each daily or overnight inspection.

Note: This inspection may be performed and certified for by the pilot in command.

Background: There is a possibility of the vent holes located at the inboard and outboard ends of the blade becoming obstructed with dirt or debris.

Source text

Sourced from the Federal Register of Legislation (legislation.gov.au), CC BY 4.0.