Commonwealth legislation

AD/ENST 28/13 - Main Rotor Hub Retention Lock Washer - Replacement

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

2/10 complexity

Owners and operators of specified Enstrom F‑28/F‑280 helicopters must replace the main rotor hub retention lock washer per Enstrom Service Note No. 0025A or FAA AD 75‑22‑10 within 25 hours TIS after 30 April 1976. Maintenance organisations and certifying engineers must perform/approve the work.

This mandatory airworthiness directive imposes direct costs and downtime on operators and ensures corrective maintenance to maintain aircraft airworthiness.

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AD/ENST 28/13 - Main Rotor Hub Retention Lock Washer - Replacement

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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 28/13 Main Rotor Hub Retention Lock

Washer - Replacement

4/76

Applicability: All models F-28A with S/Nos. 4 to 275, 277, 278, 280 to 283, and models 280 with

S/Nos. 1001 to 1006.

Document: 1. Enstrom Service Note No. 0025A; or 2. FAA AD 75-22-10.

Compliance: Within 25 hours time in service after 30 April 1976.

Source text

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