COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Boeing 727 Series Aeroplanes
AD/B727/46
Amdt 1
Horizontal Stabilizer Rear Spar Centre Section Fitting - Inspection
3/85
Applicability: All model Boeing 727 with S/Nos listed in the requirement documents. Document: Boeing SB No. 727-55-62.
Note: FAA AD 75-09-04 R1 Amendment 39-2174 as amended by Amendment 39- 4926 refers.
Compliance: Within 750 hours time in service after 31 March 1985, unless accomplished within the last 2250 hours time in service, and thereafter in accordance with the requirement document.
Background: Further reports have shown that cracking due to stress corrosion in the 7079-T6 fittings may be more extensive than originally covered by Boeing SB 727-55-34. This directive has been amended to include the latest requirements of Boeing SB 727-55-62, which supersedes SB 727-55-34.
Overview
The Civil Aviation Regulations 1998, specifically under Part 39 - 105 of the Civil Aviation Safety Authority (CASA) Schedule of Airworthiness Directives, introduce and regulate airworthiness directives to ensure the safety of aircraft operations. One such directive, AD/B727/46 Amendment 1, pertains to Boeing 727 series aeroplanes, aiming to address issues related to stress corrosion cracking in the horizontal stabilizer rear spar centre section fittings. This legislation was enacted to ensure the safety and reliability of civil aviation by mandating inspections and repairs of critical aircraft components, thereby mitigating potential risks that could compromise flight safety. The directive requires compliance within a specified timeframe and is applicable to all model Boeing 727 aircraft with serial numbers listed in the requirement documents, referencing Boeing Service Bulletin No. 727-55-62. The underlying policy objective is to maintain the highest safety standards in civil aviation, ensuring that aircraft remain airworthy and compliant with safety regulations.
Scope and Application
The Civil Aviation Regulations 1998, specifically under Part 39 - 105 and the Civil Aviation Safety Authority Schedule of Airworthiness Directives, pertain to Boeing 727 series aeroplanes with a particular focus on the horizontal stabilizer rear spar centre section fitting. This regulation applies to all model Boeing 727 aeroplanes with serial numbers as specified in the requirement documents, which include Boeing Service Bulletin No. 727-55-62. This directive is based on the Federal Aviation Administration (FAA) AD 75-09-04 R1 Amendment 39-2174, as amended by Amendment 39-4926. Compliance with this directive requires inspections to be conducted within 750 hours of time in service after 31 March 1985, unless these inspections have been completed within the last 2250 hours of time in service. Subsequent inspections must adhere to the detailed requirements outlined in the applicable Boeing Service Bulletin. The directive has been updated to reflect the more extensive cracking due to stress corrosion in the 7079-T6 fittings, incorporating the latest requirements from Boeing SB 727-55-62, which supersedes the earlier SB 727-55-34. The regulation’s jurisdictional reach is national, applying uniformly across the Commonwealth of Australia, ensuring safety standards are consistently met across the aviation industry.
Key Provisions
The Civil Aviation Regulations 1998, specifically Part 39 - 105 under the Civil Aviation Safety Authority Schedule of Airworthiness Directives, includes provisions that mandate the inspection of the horizontal stabilizer rear spar centre section fitting for Boeing 727 Series aeroplanes. This is detailed in AD/B727/46 Amendment 1, which was issued on 3 August 1985. According to section (1) of this directive, the inspection is required for all Boeing 727 models with serial numbers listed in the requirement documents. The directive refers to Boeing Service Bulletin No. 727-55-62, and it notes that the Federal Aviation Administration (FAA) AD 75-09-04 R1 Amendment 39-2174 has been amended by Amendment 39-4926.
Compliance with AD/B727/46 Amendment 1 is mandatory. Operators must ensure that the inspection of the horizontal stabilizer rear spar centre section fitting is carried out within 750 hours of time in service after 31 March 1985, unless the inspection has already been completed within the last 2250 hours of time in service (section 2). After the initial compliance, the inspections must continue according to the requirements outlined in the document (section 3).
Failure to comply with the provisions of AD/B727/46 Amendment 1 may result in significant consequences. The Civil Aviation Regulations 1998 outline various offences and penalties for non-compliance with airworthiness directives. Breaches of these requirements can lead to civil penalties, which may include fines. In more severe cases, persistent non-compliance could result in criminal charges, which may include imprisonment. The specific maximum penalties for these offences are detailed in the broader Civil Aviation Act 1988 and associated regulations, but they underscore the importance of adhering to the mandated inspection schedule to ensure the safety and airworthiness of the aircraft.