COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Israel Aircraft Industries 1123 and 1124 (Westwind) Series Aeroplanes
AD/IAI-W/1 Maximum Operating Speed - Limitation 1/80
Applicability: All models 1123 and 1124 with S/Nos. 94 to 269.
Requirement: Install in clear view of the pilot a placard as follows, as applicable to model type:
- For model 1123:
MAXIMUM OPERATING SPEED LIMIT (VMO/MMO) WITH OR WITHOUT FUEL IN TIP TANKS:
WITH AUTOPILOT ENGAGED AND WITHOUT FUEL IN TIP TANKS:
2. For model 1124:
MAXIMUM OPERATING SPEED LIMIT (VMO/MMO) WITH AUTOPILOT DISENGAGED:
BELOW 22500 FT 314 KTS
IAS ABOVE 22500 FT 0.710 M.
BELOW 26000 FT 314 KTS
IAS ABOVE 26000 FT 0.765 M.
BELOW 22500 FT 314 KTS
IAS ABOVE 22500 FT 0.710 M.
WITH AUTOPILOT ENGAGED: BELOW 26000 FT 314 KTS
IAS ABOVE 26000 FT 0.765 M.
Compliance: Within 10 hours time in service after 5 December 1979, placard to remain in place until aeroplane is modified in accordance with SB No. WW23 or SB No. WW24-17 as applicable and Israel CAA AD No. 1007.
Background: A discrepancy in the pattern of rivets installed in the wing root assembly and in the total strength assumption has been noted by the manufacturer.
Overview
The Civil Aviation Regulations 1998, amended under the Civil Aviation Act 1988, were enacted to address the need for stringent safety standards in civil aviation, ensuring the highest level of safety for aircraft operations within Australian airspace. This specific regulation, AD/IAI-W/1, targets the Israel Aircraft Industries 1123 and 1124 (Westwind) Series Aeroplanes by mandating a clear view placard for pilots to limit maximum operating speed. This measure was introduced to mitigate risks associated with a noted discrepancy in rivet patterns and total strength assumptions in the wing root assembly. The regulation was enacted by the Australian Government, overseen by the Parliament, with a clear policy objective of enhancing aviation safety through precise operational guidelines and visual reminders for pilots.
The regulation applies to all models 1123 and 1124 with serial numbers ranging from 94 to 269, requiring the installation of a placard within ten hours of the aircraft being in service after 5 December 1979. The placard must remain in place until modifications are made in accordance with specified service bulletins and the Israel Civil Aviation Authority's Airworthiness Directive No. 1007. This directive underscores the commitment to maintaining airworthiness and ensuring that any discrepancies in aircraft design and operation are promptly addressed to prevent potential safety hazards.
Scope and Application
The Civil Aviation Regulations 1998, specifically Part 39 - 105, addresses the airworthiness directives for Israel Aircraft Industries 1123 and 1124 (Westwind) Series Aeroplanes, with AD/IAI-W/1 focusing on the limitation of maximum operating speed. This legislation applies to all models 1123 and 1124 with serial numbers ranging from 94 to 269. The requirement is to install a placard in clear view of the pilot, with distinct speed limits depending on the model type, autopilot status, and altitude. The regulation mandates compliance within ten hours of time in service after 5 December 1979, ensuring that the placard remains in place until the aeroplane is modified in accordance with specific service bulletins and airworthiness directives. The directive aims to address a noted discrepancy in rivet patterns and strength assumptions within the wing root assembly, thereby ensuring the continued airworthiness and safety of these aircraft within the Commonwealth of Australia.
Key Provisions
The Civil Aviation Regulations 1998, specifically Part 39 - 105 (section 1), mandate the installation of specific placards on Israel Aircraft Industries 1123 and 1124 (Westwind) series aeroplanes to inform the pilot of maximum operating speed limitations. For model 1123, the placard must indicate the maximum operating speed limit both with and without fuel in the tip tanks, as well as the speed limit when the autopilot is engaged. For model 1124, the placard must specify the maximum operating speed limit for various altitudes when the autopilot is disengaged, and the speed limit when the autopilot is engaged at different altitudes. This requirement applies to all models 1123 and 1124 with serial numbers ranging from 94 to 269.
The Act imposes specific obligations on the parties or entities governed by it. Owners and operators of the affected aircraft must ensure that the required placards are installed in clear view of the pilot within 10 hours of time in service after 5 December 1979. The placards must remain in place until the aeroplane is modified in accordance with Service Bulletin No. WW23 or WW24-17, as applicable, and Israel Civil Aviation Authority Airworthiness Directive No. 1007. This obligation ensures that pilots are adequately informed of the speed limitations to maintain the safety and integrity of the aircraft.
Failure to comply with these provisions can result in significant consequences. While the specific penalties for non-compliance are not detailed in the provided text, breaches of the Civil Aviation Regulations 1998 can generally lead to enforcement actions by the Civil Aviation Safety Authority (CASA). These actions may include fines, legal proceedings, and potential grounding of the non-compliant aircraft. The severity of the penalties can vary depending on the nature and extent of the breach, but they are intended to enforce compliance and ensure the safety of civil aviation operations in Australia.