AIRWORTHINESS DIRECTIVE
For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CASR 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.
British Aerospace BAe 146 Series Aeroplanes
AD/BAe 146/112 Cargo Restraint Strap Assemblies 1/2005
DM
Applicability: Model BAe 146 series aircraft and Avro 147-RJ series aircraft, on which cargo restraint strap assemblies part number 1519-MCIDS have been installed per Supplemental Type Certificate (STC) ST01004NY.
Requirement: Revise the Limitations Section of the Aircraft Flight Manual (AFM), and the cargo- loading procedures of the Weight and Balance Manual (WBM), to include the following information (this may be accomplished by inserting a copy of this Directive into the AFM and the WBM):
“Discontinue the use of STC ST01004NY to install Airline Container Manufacturing Company Inc., cargo restraint straps, part number 1519-MCIDS, as the only means of securing cargo to Technical Standard Order (TSO) C90c/NAS3610 pallets. Such cargo restraint straps may continue to be used a supplemental restraints to secure cargo to TSO C90c/NAS3610 pallets, or to the cargo restraint fittings in the aircraft floor, per the aircraft manufacturer’s weight and balance manuals, and within the strap rated load (5,000 lbs).”
Note 1: If the above statement has been incorporated into the general revisions of the AFM and the WBM, the general revisions may be incorporated into the AFM and WBM, and the copy of this Directive may then be removed from the AFM and WBM.
Note 2: FAA AD 2004-22-01 Amdt 39-13829 refers.
Compliance: Within 14 days after 1 December 2004.
This Airworthiness Directive becomes effective on 1 December 2004.
British Aerospace BAe 146 Series Aeroplanes
AD/BAe 146/112 (continued)
Background: The actions specified by this Directive are intended to prevent shifting or unrestrained cargo in the cargo compartment, which could cause an unexpected change in the aircraft’s centre of gravity, damage to the aircraft structure and/or flight control system, a hazard to the flightcrew, and/or possible loss of controllability of the aircraft.
David Villiers
Delegate of the Civil Aviation Safety Authority 24 November 2004
The above AD is notified in the Commonwealth of Australia Gazette on 1 December 2004.
Overview
The Civil Aviation Safety Authority (CASA) issued Airworthiness Directive AD/BAe 146/112 on 24 November 2004, published in the Commonwealth of Australia Gazette on 1 December 2004, to address safety concerns regarding the installation of cargo restraint strap assemblies on British Aerospace BAe 146 series aircraft and Avro 147-RJ series aircraft. This directive was enacted to rectify an unsafe condition where cargo might shift or become unrestrained during flight, leading to potential hazards such as an unexpected change in the aircraft’s centre of gravity, damage to the aircraft structure or flight control system, risk to the flight crew, and possible loss of controllability. The directive mandates revisions to the Aircraft Flight Manual and the Weight and Balance Manual, prohibiting the sole use of specific cargo restraint straps for securing cargo, while permitting their continued use as supplementary restraints under certain conditions.
This Airworthiness Directive aims to enhance the safety of aircraft operations by ensuring cargo is properly secured, thereby preventing the risks associated with unrestrained cargo during flight. The directive is issued under subregulation 39.1(1) of the Civil Aviation Safety Regulations 1998 and is applicable to aircraft that have installed cargo restraint strap assemblies part number 1519-MCIDS per Supplemental Type Certificate (STC) ST01004NY. The requirement to revise the manuals must be met within 14 days after 1 December 2004, ensuring that operators are well-informed and compliant with the new safety standards.
Scope and Application
This Airworthiness Directive (AD) applies specifically to British Aerospace BAe 146 series aeroplanes and Avro 147-RJ series aeroplanes equipped with cargo restraint strap assemblies part number 1519-MCIDS installed under Supplemental Type Certificate (STC) ST01004NY. The directive mandates revisions to the Aircraft Flight Manual (AFM) and the cargo-loading procedures in the Weight and Balance Manual (WBM) to ensure cargo is securely fastened using specified methods. The directive requires these changes to be implemented within 14 days of 1 December 2004, aiming to prevent cargo shifting, which could lead to safety hazards such as unexpected changes in the aircraft's centre of gravity, structural damage, or loss of controllability. The AD is issued under the authority of the Civil Aviation Safety Authority (CASA) and is effective as of 1 December 2004, ensuring compliance with Australian aviation safety regulations.
Key Provisions
The main sections of this Airworthiness Directive (AD) focus on the applicability, requirements, and compliance timelines for the British Aerospace BAe 146 series aircraft and Avro 147-RJ series aircraft equipped with cargo restraint strap assemblies part number 1519-MCIDS installed per Supplemental Type Certificate (STC) ST01004NY. Specifically, section (a) under applicability identifies the aircraft types and specific STC that this directive applies to. The requirement section (b) mandates that the Aircraft Flight Manual (AFM) and the Weight and Balance Manual (WBM) must be revised to include specific information regarding the discontinuance of STC ST01004NY for installing certain cargo restraint straps, while allowing their continued use under certain conditions. The compliance section (c) stipulates that these revisions must be completed within 14 days following 1 December 2004, the date on which this directive becomes effective.
Under this Act, the obligations imposed on the operators of the affected aircraft include ensuring that their AFM and WBM are updated to incorporate the specified information from the directive. This involves amending the Limitations Section of the AFM and updating the cargo-loading procedures in the WBM to reflect the discontinuance of STC ST01004NY for the installation of certain cargo restraint straps while allowing their continued use under the prescribed conditions. The directive allows for the insertion of a copy of the AD into the AFM and WBM, which can be later removed once the general revisions are incorporated.
Failure to comply with the requirements set out in this AD may result in serious safety hazards, including shifting or unrestrained cargo, which could lead to unexpected changes in the aircraft's centre of gravity, potential damage to the aircraft structure and flight control systems, hazards to the flight crew, and possible loss of controllability. While the directive does not explicitly state penalties or legal consequences for non-compliance, it is clear that adhering to these requirements is critical for maintaining airworthiness and ensuring the safety of the aircraft and its occupants. Non-compliance could potentially lead to enforcement actions by the Civil Aviation Safety Authority (CASA), which might include grounding the aircraft until compliance is achieved.