Commonwealth legislation

AD/HU 369/81 - Tail Rotor Swashplate Bearing Set

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

6/10 complexity

This airworthiness directive requires inspection and replacement of the tail-rotor swashplate bearing set on McDonnell Douglas (Hughes) and Kawasaki 369D, 369E and 369F/FF helicopters, using the specified McDonnell Douglas service documents. It mandates immediate checks after 30 June 1990, more frequent inspection where bearing seals are black, a maintenance-release entry noting seal colour, and replacement before 300 flight hours; some inspections may be performed by the pilot.

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AD/HU 369/81 - Tail Rotor Swashplate Bearing Set

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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McDonnell Douglas (Hughes) and Kawasaki 369 Series Helicopters

AD/HU 369/81 Tail Rotor Swashplate Bearing Set 8/90

Applicability: All model 369D, 369E and 369F/FF series helicopters.

Requirement: Action in accordance with McDonnell Douglas SIN DN-167, EN-58 or FN-46 as applicable.

Compliance: Part 1 of Requirement document-Prior to further flight after 30 June 1990. If bearing seals are green or yellow a certification which includes the bearing seal colour and a statement of compliance with this AD shall be entered on the Maintenance Release.

Note: This inspection may be accomplished by the pilot in command.

Part 2 of Requirement document-Within 10 hours time in service for applicable black seal bearing set and thereafter at intervals not exceeding 10 hours time in service.

Replace bearing set before 300 hours time in service. Bearing sets that have exceeded 300 hours time in service by 30 June 1990 must be replaced before further flight.

Background: Inspection for defective tail rotor swashplate bearing sets is required to prevent failure of the bearing which could result in loss of control of the helicopter.

Source text

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

1 AD/HU 369/81 - Tail Rotor Swashplate Bearing Set