Commonwealth legislation

AD/GOV/10 Amdt 1 - Governor Flyweight Assembly

RepealedCTH

This Act has been repealed and is no longer in force. It is retained for historical reference.

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

5/10 complexity

This AD mandates inspections and corrective actions for aircraft using McCauley C290D/C290T governors (marked “H” or earlier) on Lycoming 540 engines—notably Mooney M20M, Maule, and Commander 114B operators. It requires compliance with McCauley Alert Service Bulletins 202C and 214 within short flight-hour or annual-inspection windows. The rule responds to discovered flyweight assembly or pilot-spool end-fitting failures that can cause total propeller control loss, engine damage, or loss of aircraft control; Amendment 1 follows higher-than-expected failure rates.

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Direct links to the current provisions in AD/GOV/10 Amdt 1 - Governor Flyweight Assembly.

AD/GOV/10 Amdt 1 - Governor Flyweight Assembly

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 107 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Propeller Governors

AD/GOV/10

Amdt 1

Governor Flyweight Assembly 1/95

Applicability: All model C290D[X]/T[X] governors with letter 'H' or prior used on Lycoming 540 series engines. Refer Requirement Documents for governor models and aircraft applicability.

Requirement: 1. Unless previously carried out Action in accordance with McCauley Alert SB 202C.

Unless previously carried out action in accordance with McCauley Alert SB 214.

Compliance: 1. Within 25 hours time in service or at next annual inspection or within 12 calendar months from 5 January 1995, whichever occurs first.

Within 200 hours time in service or at next annual inspection or within 12 calendar months from 5 January 1995, whichever occurs first.

Background: The manufacturer has advised that separation of the flyweight assembly and/or failure of the pilot spool end fitting, which may result in loss of governor control, has occurred. This amendment raised after advice from the manufacturer that there has been an increase in the failure rate of governors fitted to Mooney M20M and certain Maule and Commander 114B series aircraft.

Source text

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

1 AD/GOV/10 Amdt 1 - Governor Flyweight Assembly