AD/F100/3 - Engine Cowling - Inspection/Modification/Repair

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Legislation au F2006B09631 In force Legislative Instrument

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

 


Fokker F100 (F28 Mk 100) Series Aeroplanes

 

AD/F100/3 Engine Cowling - Inspection/Modification/Repair 1/99

Applicability: F28 Mk. 100 aircraft serial numbers 11244 through 11438.

 

Requirement: Inspect the fixed engine cowling in accordance with Fokker Service bulletin F100-71- 016 dated 18 February 1994, and carry out repairs in Service Bulletin to restore the structure(s) to a serviceable state.

 

Note: RLD Airworthiness Directive 94-038 (A) dated 21 February 1994 refers.

 

Compliance: Before accomplishment of 15,000 flight hours since new.

 

This Airworthiness Directive becomes effective on 28 January 1999.

 

Background: Reports of excessive noise from the rear of the aircraft during flight led to the discovery of interference between the fixed engine cowl fasteners and the forward and aft engine crane beams. This Directive introduces an inspection to check for such interference and measures to restore the structure and prevent further recurrence of the interference.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Overview

The Civil Aviation Regulations 1998, as amended by the Civil Aviation (Airworthiness) Regulations 1998, were enacted to ensure the safety of civil aviation in Australia. This particular legislative instrument, F2006B09631, focuses on issuing Airworthiness Directives for specific aircraft models to address identified safety issues. One such directive is AD/F100/3, which was introduced to address a problem identified in Fokker F100 (F28 Mk 100) series aeroplanes, where excessive noise during flight was traced to interference between the fixed engine cowl fasteners and the forward and aft engine crane beams. This Airworthiness Directive mandates inspections and necessary repairs to ensure the structural integrity of the aircraft and prevent further occurrences of such interference, thus maintaining the safety standards set by the Civil Aviation Safety Authority. This directive became effective on 28 January 1999, underscoring the regulatory commitment to promptly address safety concerns within the civil aviation sector.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, govern the scope and application of Airworthiness Directives for aircraft operating within Australia. This legislation mandates the inspection, modification, and repair of the fixed engine cowling for Fokker F100 (F28 Mk 100) series aeroplanes, affecting aircraft with serial numbers ranging from 11244 to 11438. The regulation requires compliance with Fokker Service bulletin F100-71-016 dated 18 February 1994, and any subsequent repairs must adhere to the service bulletin to ensure the structure is serviceable. This directive, which became effective on 28 January 1999, was issued in response to reports of excessive noise during flight due to interference between the fixed engine cowl fasteners and the forward and aft engine crane beams. The directive applies nationwide and must be complied with before the aircraft reaches 15,000 flight hours since new. The scope of this legislation is confined to specific Fokker F100 series aeroplanes, and compliance is overseen by the Civil Aviation Safety Authority.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105, includes the Civil Aviation Safety Authority (CASA) Schedule of Airworthiness Directives, which mandates certain actions for specific aircraft to ensure ongoing safety. The Fokker F100 (F28 Mk 100) Series Aeroplanes are subject to AD/F100/3, which pertains to the engine cowling (section 1/99). This directive applies to F28 Mk. 100 aircraft with serial numbers ranging from 11244 to 11438. The directive requires an inspection of the fixed engine cowling in line with Fokker Service bulletin F100-71-016 dated 18 February 1994, and mandates any necessary repairs as outlined in the service bulletin to ensure the engine cowling is restored to a serviceable state. Compliance with this Airworthiness Directive is mandatory for the specified aircraft before they accumulate 15,000 flight hours since being new. The directive came into effect on 28 January 1999, following reports of excessive noise from the rear of the aircraft during flight. These reports revealed interference between the fixed engine cowl fasteners and the forward and aft engine crane beams. The directive aims to prevent this interference and ensure the structural integrity of the engine cowling. Entities governed by this directive must adhere to the inspection and repair requirements specified. This includes following the detailed procedures in the Fokker Service bulletin and ensuring that any identified issues are rectified to prevent future occurrences of interference. It is imperative that these actions are completed before the aircraft reach the specified flight hour threshold to maintain compliance and ensure airworthiness. Failure to comply with this Airworthiness Directive may result in serious consequences. The regulations stipulate that any breaches of the directive can lead to civil or criminal penalties, depending on the severity and intent behind the non-compliance. The specific penalties are not detailed in the text provided, but non-compliance with CASA directives is generally taken very seriously and can result in significant fines or other legal actions. The overarching goal of the directive is to enhance aviation safety by addressing and mitigating the identified risks.

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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.