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/F100/30 Flight Warning Computer Replacement 4/99
Applicability: All F.28 Mk.0070 and Mk.0100 aeroplanes.
Requirement: 1. Replace the Flight Warning Computer (FWC) with a modified unit, part number 80-0610-3-45, in accordance with Fokker Service Bulletin (SB) F100-31-051 dated 15 August 1998.
2. Modify the wiring in accordance with Fokker SB F100-31-047 Revision 1 dated 21 March 1997.
Note: Netherlands AD 1998-110 refers.
Compliance: 1. Prior to 22 October 2001.
2. Either concurrently with, or prior to Requirement 1.
This Airworthiness Directive becomes effective on 22 April 1999.
Background: In-service experience with Fokker 70/100 aircraft has shown that full transition to another flight phase could take up to eight seconds from the moment that all relevant input conditions are met. This may lead to alerts being generated during phases of flight where they should be suppressed. This directive introduces a new FWC that reduces the time delay between phases of flight to the lowest minimum attainable.
The new computer also changes the flight phase inhibition definition of the REVERSER ENG 1(2) alerts so that these alerts are no longer inhibited during initial climb between 400 and 1 000 ft radio altitude.
Overview
The Civil Aviation Regulations 1998, enacted by the Commonwealth of Australia, were designed to ensure the safety and efficiency of civil aviation within the country. Part 39, specifically concerning the Civil Aviation Safety Authority Schedule of Airworthiness Directives, addresses various technical and operational safety issues for different aircraft types. One such directive, AD/F100/30, pertains to Fokker F100 (F28 Mk 100) series aeroplanes and focuses on replacing the Flight Warning Computer to enhance flight phase transition timings and alert management. This directive responds to identified issues where transition delays between flight phases could lead to inappropriate alerts, thereby compromising safety. The directive mandates the replacement of the Flight Warning Computer with a modified unit and wiring modifications to ensure compliance with safety standards, reflecting the policy objective to mitigate risks associated with in-service performance of the aircraft.
Enacted to address safety gaps in the operation of Fokker F100 aircraft, the directive aims to ensure that the aircraft's flight warning systems operate efficiently and reliably, preventing potential hazards during critical flight phases. The Australian Government, through the Civil Aviation Safety Authority, introduced this directive to align with international safety standards and enhance the operational safety of the Fokker F100 series, thereby protecting both passengers and crew. The directive became effective on 22 April 1999, requiring compliance by 22 October 2001, ensuring that all relevant modifications are implemented to maintain the highest safety standards in civil aviation.
Scope and Application
The Civil Aviation Regulations 1998, specifically Part 39 - 105, pertains to the Civil Aviation Safety Authority's Schedule of Airworthiness Directives for Fokker F100 (F28 Mk 100) Series Aeroplanes, as evidenced by AD/F100/30. This legislation applies to all F.28 Mk.0070 and Mk.0100 aeroplanes within the Australian jurisdiction, mandating that the Flight Warning Computer (FWC) must be replaced with a specified modified unit (part number 80-0610-3-45) in accordance with Fokker Service Bulletin (SB) F100-31-051 dated 15 August 1998. Additionally, the wiring must be modified as per Fokker SB F100-31-047 Revision 1 dated 21 March 1997. Compliance with these requirements must be achieved by 22 October 2001, with the directive becoming effective on 22 April 1999. This regulation addresses safety concerns identified in the in-service experience of Fokker 70/100 aircraft, particularly the delay in transition between flight phases, which may result in inappropriate alerts being generated.
Key Provisions
The Civil Aviation Regulations 1998, specifically Part 39, section 105, contains detailed directives regarding the airworthiness of Fokker F100 series aeroplanes. The regulation in focus is AD/F100/30, which mandates the replacement of the Flight Warning Computer (FWC) with a modified unit, part number 80-0610-3-45, as per Fokker Service Bulletin (SB) F100-31-051 dated 15 August 1998. Additionally, the wiring must be modified in accordance with Fokker SB F100-31-047 Revision 1 dated 21 March 1997. This directive applies to all F.28 Mk.0070 and Mk.0100 aeroplanes and references Netherlands AD 1998-110. Compliance with these requirements must be achieved prior to 22 October 2001, with the wiring modification either concurrently with or prior to the FWC replacement.
Operators of the affected Fokker F100 series aeroplanes are required to ensure the FWC replacement and wiring modifications are carried out as specified. The directive mandates that these actions are completed by 22 October 2001 to maintain the airworthiness of the aircraft. The modifications aim to address issues where the FWC may generate alerts during phases of flight where they should be suppressed. The FWC replacement and wiring changes are designed to reduce the time delay between flight phases, ensuring that alerts are only generated when appropriate.
Failure to comply with AD/F100/30 may result in the aeroplane being deemed unairworthy, potentially leading to operational prohibitions. Operators found non-compliant with the directive could face enforcement actions, including fines or other regulatory penalties. Additionally, the non-compliance could lead to increased risk of operational safety issues, which could be compounded by potential legal and financial consequences for the operators.
Under the Civil Aviation Act 1988, non-compliance with airworthiness directives can lead to both civil and criminal penalties. Civil penalties can include fines up to a maximum of $210,000 for individuals and $1,050,000 for corporations, as stipulated in section 60 of the Act. Furthermore, in more severe cases, individuals could face imprisonment for up to two years, and corporations could be subject to imprisonment for up to five years. These penalties reflect the seriousness with which the Australian government treats compliance with airworthiness directives to ensure the safety and integrity of the national airspace.