COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
AIRWORTHINESS DIRECTIVE
For the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/AC -112/7 Amdt 1 and issues the following AD under subregulation 39.1 (1) of CAR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.
Gulfstream (Rockwell) 112 Series Aeroplanes
AD/AC-112/7
Amdt 2
Lower Vertical Fin Rib - Inspection 7/2002
Applicability: All models 112 and 112B with S/Nos. 3 to 544; All model 112TC with S/Nos. 13000 to 13108; All model 112TCA with S/Nos. 13150 to 13309.
Requirement: Action in accordance with Commander Aircraft Company Service Bulletin (SB) No.
SB-112-56B.
Note: Aircraft modified per Gulfstream Aerospace Service Bulletins SB-112-56 or SB-112-56A are not in compliance with this Airworthiness Directive.
Compliance: Unless already accomplished inspect within 100 hours’ time in service after 11 July 2002 and thereafter at intervals not exceeding 100 hours’ time in service until modified.
This Airworthiness Directive becomes effective on 11 July 2002.
Background: The Amendment 1 of this directive was issued to require inspection of the lower vertical fin rib during the 100 hour inspection period for cracking as required by the manufacturer’s airplane maintenance manual.
Amendment 2 is issued to reflect an amendment to the manufacturers service bulletin, which increases the applicability range and an improved repair scheme when cracks are found.
Amendment 1 of this Airworthiness Directive became effective in July 1978.
David Alan Villiers
Delegate of the Civil Aviation Safety Authority 31 May 2002
The above AD is notified in the Commonwealth of Australia Gazette on 19 June 2002.
Overview
The Civil Aviation Regulations 1998 (CAR 1998) were enacted to regulate civil aviation in Australia and ensure the safety of aircraft and aeronautical products. Part 39 - 105 of the CAR 1998 deals specifically with the Civil Aviation Safety Authority (CASA) Schedule of Airworthiness Directives. This schedule outlines mandatory safety directives that must be followed by aircraft operators to maintain airworthiness standards. The policy objective of these regulations is to enhance aviation safety by ensuring that aircraft and aeronautical products are maintained in a condition that allows safe operation. The regulations were enacted by the Australian Parliament and are administered by CASA, which has the authority to issue and enforce Airworthiness Directives. These directives aim to address specific safety issues identified in aircraft or aeronautical products to prevent unsafe conditions from leading to accidents or incidents.
Scope and Application
The Civil Aviation Regulations 1998, specifically Part 39 - 105, pertains to Airworthiness Directives issued under the authority of the Civil Aviation Safety Authority (CASA). This particular Airworthiness Directive (AD) applies to Gulfstream (Rockwell) 112 Series aeroplanes, including all models 112 and 112B with specific serial numbers, as well as models 112TC and 112TCA with their respective serial number ranges. The AD mandates inspections of the lower vertical fin rib for cracks, requiring adherence to specific instructions set out by the manufacturer's service bulletin. Compliance with this directive must be achieved within a specified time frame after the AD's effective date, and subsequent inspections must not exceed set intervals. Notably, aircraft previously modified according to certain service bulletins are not considered compliant unless they meet the new criteria outlined in this directive. This AD applies nationally within the Commonwealth of Australia and is enforceable by CASA, which has the authority to issue such directives under the Civil Aviation Regulations.
Key Provisions
The Civil Aviation Regulations 1998, specifically Part 39, Section 105, outlines the process and requirements for issuing Airworthiness Directives (ADs). Section 39.1(1) empowers a CASA delegate to revoke existing ADs and issue new ones, as seen with AD/AC-112/7 Amdt 2, which replaces Amendment 1. This particular AD (Section 7) mandates specific actions to address identified unsafe conditions in Gulfstream (Rockwell) 112 Series Aeroplanes. The AD applies to all models 112 and 112B with serial numbers (S/Nos.) 3 to 544, model 112TC with S/Nos. 13000 to 13108, and model 112TCA with S/Nos. 13150 to 13309.
The requirement for this AD involves following Commander Aircraft Company Service Bulletin No. SB-112-56B. Notably, aircraft that have already been modified according to previous service bulletins (SB-112-56 or SB-112-56A) do not comply with this AD. Compliance with this directive necessitates an inspection of the lower vertical fin rib within 100 hours of the AD's effective date of 11 July 2002, and subsequently at intervals not exceeding 100 hours until the aircraft is modified. This requirement ensures that any issues related to cracking in the lower vertical fin rib are identified and addressed promptly.
Failure to comply with the AD may result in various consequences. Although specific offences and penalties are not detailed in the text, the Civil Aviation Regulations 1998 generally impose civil and criminal penalties for non-compliance with ADs. Civil penalties can include fines, while criminal penalties may encompass imprisonment, reflecting the seriousness of ensuring aircraft airworthiness. The Civil Aviation Safety Authority (CASA) enforces these regulations, and non-compliance could lead to enforcement actions, including legal proceedings, against the operators or owners of the affected aircraft.
The AD was officially notified in the Commonwealth of Australia Gazette on 19 June 2002, ensuring transparency and legal recognition of the directive. This step is crucial for all stakeholders, including aircraft operators, maintenance personnel, and regulatory bodies, to be aware of and adhere to the mandated safety requirements.