COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Cessna 170, 172, F172, FR172 and 175 Series Aeroplanes
AD/CESSNA 170/64 Lower Forward Doorpost 10/98
Applicability: Cessna model 172R aeroplanes, serial numbers 17280004 through 17280016, 17280018 through 17280050, 17280052 through 17280058, 17280060 through
17280062, 17280064, 17280066 through 17280082, 17280085 through 17280099,
17280101 through 17280113, 17280115, 17280116, 17280118 through 17280125,
17280128 through 17280131 and 17280138.
Requirement: Modify the lower forward doorpost by installing the specified rivets in accordance with Cessna Service Bulletin (SB) No. SB97-53-02, dated September 15, 1997.
Note: FAA AD 98-14-07 refers.
Compliance: Unless already accomplished, modify before 100 hours time in service after 10 September 1998. Certification in the aircraft log book of compliance with the requirements of the referenced Cessna SB, on or before 10 September 1998, satisfies the requirement of this directive and may be used to certify compliance with this directive.
This airworthiness directive becomes effective on 10 September 1998.
Background: This directive has been issued to require modification of the forward lower doorpost by installing rivets. The directive is the result of a report by Cessna that some rivets were not installed during manufacture. This may reduce the structural rigidity of the affected area, leading to structural cracking.
Overview
The Civil Aviation Regulations 1998, enacted by the Commonwealth of Australia, address various aviation safety concerns to ensure the safe operation of aircraft within Australian airspace. Specifically, Part 39 - 105 pertains to the Civil Aviation Safety Authority's schedule of airworthiness directives, which are legally binding requirements to ensure aircraft maintain an airworthy status. This particular airworthiness directive, AD/CESSNA 170/64, was introduced to address a structural integrity issue in certain Cessna 172 series aeroplanes. The directive mandates that specific models of Cessna 172R aeroplanes, identified by their serial numbers, must undergo a modification to the lower forward doorpost by installing the specified rivets to prevent structural cracking. This directive aims to rectify a manufacturing oversight identified by Cessna, ensuring that the structural integrity of these aircraft is maintained, thereby enhancing flight safety. The directive became effective on 10 September 1998, with compliance required before 100 hours of time in service after this date.
Scope and Application
The Civil Aviation Regulations 1998, specifically under Part 39 - 105 and the Civil Aviation Safety Authority Schedule of Airworthiness Directives, governs the maintenance and modification of various aircraft models, including the Cessna 170, 172, F172, FR172, and 175 series aeroplanes. This legislation applies to specific serial numbers of the Cessna model 172R aeroplanes, which must comply with the airworthiness directive AD/CESSNA 170/64 concerning the modification of the lower forward doorpost. The requirement mandates the installation of specified rivets as per Cessna Service Bulletin (SB) No. SB97-53-02, dated September 15, 1997, to address structural concerns identified during manufacturing that could potentially lead to structural cracking. Compliance with this directive must be achieved within 100 hours of time in service after the directive's effective date of 10 September 1998, and certification in the aircraft logbook can be used to demonstrate compliance. The directive extends its applicability to ensure the continued airworthiness and safety of the specified aircraft models within the Australian aviation sector.
Key Provisions
The main operative sections of the AD/CESSNA 170/64 airworthiness directive (paragraphs 1 and 2) require that specific Cessna 172R model aeroplanes, with certain serial numbers, must have their lower forward doorpost modified by installing the specified rivets, in accordance with Cessna Service Bulletin No. SB97-53-02 dated September 15, 1997. This modification must be completed before 100 hours of time in service after 10 September 1998. Certification of compliance in the aircraft log book, on or before 10 September 1998, is sufficient to satisfy the requirements of this directive.
The obligations imposed by the directive include ensuring that the specified modifications are carried out on the affected aircraft within the stipulated timeframe. This involves installing the appropriate rivets to address the structural issue identified in the Cessna Service Bulletin. Operators of these aircraft must ensure that the modifications are completed and documented in the aircraft log book as required.
Failure to comply with the requirements of this airworthiness directive may result in civil or criminal consequences. Although specific penalties are not outlined in the text, non-compliance with airworthiness directives can lead to enforcement actions by the Civil Aviation Safety Authority. Such actions may include fines, the grounding of the aircraft, or other regulatory measures. The exact penalties would depend on the nature and extent of the non-compliance, as well as any applicable civil aviation laws and regulations.