Commonwealth legislation

AD/HU 369/91 - "Flight Trials" Hardpoints

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legislative instrument

Plain English Summary

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This Airworthiness Directive requires owners/operators of McDonnell Douglas (Hughes) and Kawasaki 369 series helicopters (models 369D, 369E, 369F, 369FF and 500N) fitted with Flight Trials Helicopter Inc. hardpoints to remove from service any hardpoints not marked with the specified part numbers and a serial number. The rule aims to prevent hardpoint failure and possible contact with the fuselage or rotor system; compliance is mandatory before further flight after 22 May 1996.

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AD/HU 369/91 - "Flight Trials" Hardpoints

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 369/91 "Flight Trials" Hardpoints 8/96 DM

Applicability: Models 369D, 369E, 369F, 369FF, and 500N that have been modified using Flight Trials Helicopter Inc. hardpoint assemblies in accordance with either United States FAA:

Supplementary Type Certificate SH6080NM approved by this Authority, or

b. Form 337 "Major Repair and Alteration", prior to import into Australia. Requirement: Remove from service any Flight Trials Helicopter Inc. hardpoints not marked with:

a Part Number (P/N) FTH 105 LH Mod 1 for the port side and FTH 105 RH Mod 1 for the starboard side; and

b. a Serial Number (S/N).

Note 1. Access may be gained by removing the NAS 1351-3 cap screw that secures the hardpoint to the P/N 369H2521-1 and -2 jacking fittings, and slipping the hardpoint assembly out of the step mount.

Note 2. FAA AD 96-08-03 refers.

Compliance: Before further flight after 22 May 1996.

Background: This Directive is raised to prevent failure of a hardpoint assembly with separation from the helicopter, and subsequent possible contact with the fuselage or rotor system.

Source text

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

1 AD/HU 369/91 - "Flight Trials" Hardpoints