AD/SWSA226/10 - Engine Windmilling Limits Placard - Installation

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Legislation au F2006B07157 Not in force Legislative Instrument

Legislation content

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

 


Fairchild (Swearingen) SA226 and SA227 Series Aeroplanes

 

AD/SWSA226/10 Engine Windmilling Limits Placard - Installation


7/73

 

Applicability: Model 226T.

 

Requirement: Install the following placard on the main instrument panel adjacent to the Fuel Consumption Totalizer.

 

WINDMILLING RPM OPERATING LIMITS

 

28% to 100% One minute maximum.

 

18% to 28% Do not allow engine to wind-mill in this RPM range. WINDMILLING RPM              OPERATING LIMITS

10% to 18% 5 minute maximum.

 

5% to 10% 30 minute maximum.

 

0% to 5% No limit.

 

Compliance: Within 10 hours time in service after 5 July 1973.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Overview

The Civil Aviation Regulations 1998, specifically the F2006B07157 legislative instrument, was enacted to address safety concerns related to the operation of Fairchild (Swearingen) SA226 and SA227 series aeroplanes. This regulation aims to ensure compliance with safety standards by mandating the installation of a specific placard on the main instrument panel of the Model 226T to delineate the acceptable engine windmilling limits. The Civil Aviation Safety Authority, the enacting body, established this directive to mitigate risks associated with engine windmilling, thereby enhancing the overall safety of aviation operations. The policy objective is to provide clear operational guidelines to prevent engine damage and ensure the safe and efficient operation of the specified aircraft models.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, addresses the application of Airworthiness Directives issued by the Civil Aviation Safety Authority, with this particular entry focusing on the Fairchild (Swearingen) SA226 and SA227 series aeroplanes. This legislative instrument mandates the installation of a specific placard related to engine windmilling limits on model 226T aeroplanes. The directive applies to aircraft operators and maintenance personnel responsible for the maintenance and operation of these aircraft models. Geographically, this regulation extends across the Commonwealth of Australia, thereby encompassing all states and territories within its jurisdiction. There are no stated exclusions or exemptions within the text of this directive; it applies universally to the specified model aeroplanes within the Australian airspace. The regulation may be further elaborated or amended through subordinate instruments, ensuring that the standards and safety measures remain current and applicable to the evolving landscape of civil aviation.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105, includes a Schedule of Airworthiness Directives that governs the operation and maintenance of certain aircraft types. One such directive, AD/SWSA226/10, pertains to Fairchild (Swearingen) SA226 and SA227 series aeroplanes, mandating the installation of an engine windmilling limits placard on the main instrument panel adjacent to the Fuel Consumption Totalizer for Model 226T (section 39 - 105). The directive requires the placard to display specific operating limits for engine wind-milling, ensuring pilots are aware of the permissible RPM ranges and durations for windmilling. Under this directive, the installation of the placard must be completed within a strict timeframe. Operators of Model 226T aircraft are required to ensure that the specified placard is installed within 10 hours of time in service after 5 July 1973 (section 39 - 105). This obligation ensures that all pilots operating these aircraft are promptly informed of the necessary safety precautions related to engine windmilling. Failure to comply with the requirements set out in AD/SWSA226/10 can result in significant consequences. The directive highlights that non-compliance with the specified installation timeframe or operating limits can lead to potential safety hazards. Although the specific penalties for breaches are not detailed in the provided text, breaches of Civil Aviation Regulations can generally result in enforcement actions, including fines, and in severe cases, criminal charges. The exact penalties depend on the nature and severity of the breach, and may be outlined in other sections of the Civil Aviation Regulations or related legislation.

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Area of Law
Environmental Law
Instrument
Regulation
Concepts
Compliance Obligations
Regulatory Standards
Reporting & Disclosure Obligations
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Engine Windmilling Limits Placard

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Sourced from the Federal Register of Legislation at 26 August 2026. For the latest information on Australian Government law please go to https://www.legislation.gov.au.