Commonwealth legislation

AD/ENST 28/25 - Clutch Engagement Over Centre Lock Warning Light

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

2/10 complexity

Requires fitting a cockpit warning light that shows the clutch engaging mechanism is locked and “over‑centre” on Enstrom F‑28 series helicopters (F‑28A/280, F‑28C/280C, F‑28F/280F). Owners/operators must install the indicator per SDB No. 0061 within 100 hours TIS after 31 March 1983.

The change ensures flightcrew can verify clutch status; owners/operators bear parts, labour and downtime. The AD points to SDB No. 0061 and FAA AD 82‑24‑01 for technical details.

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AD/ENST 28/25 - Clutch Engagement Over Centre Lock Warning Light

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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 Enstrom F-28 Series Helicopters

AD/ENST 28/25 Clutch Engagement Over Centre

Lock Warning Light Applicability: All models F-28A, 280, F-28C, 280C, F-28F and 280F helicopters. Document: Document SDB No. 0061.

FAA AD 82-24-01 refers.

Compliance: Within 100 hours time in service after 31 March 1983.

1/83

Background: To ensure that the clutch engaging mechanism is locked and over centre, a warning light indicator is installed.

Source text

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