{"id":"F2006B03465","name":"AD/BAe 146/112 - Cargo Restraint Strap Assemblies","slug":"ad-bae-146-112-cargo-restraint-strap-assemblies","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43019,"registerId":"commonwealth-F2006B03465-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# ![](image.001.png)  \nAIRWORTHINESS DIRECTIVE\n\nFor 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.\n\n![](image.001.png)  \n\nBritish Aerospace BAe 146 Series Aeroplanes","sortOrder":0},{"sectionNumber":"AD/BAe 146/112 Cargo Restraint Strap Ass","sectionType":"part","heading":"AD/BAe 146/112 Cargo Restraint Strap Assemblies 1/2005","content":"# AD/BAe 146/112 Cargo Restraint Strap Assemblies 1/2005\n\nDM\n\nApplicability: 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.\n\nRequirement: 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):\n\n“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).”\n\nNote 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.\n\nNote 2: FAA AD 2004-22-01 Amdt 39-13829 refers.\n\nCompliance: Within 14 days after 1 December 2004.\n\nThis Airworthiness Directive becomes effective on 1 December 2004.","sortOrder":1}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a targeted safety directive addressing a specific unsafe condition with particular cargo restraint equipment. The scope remains precisely limited to the identified safety issue with STC ST01004NY and part number 1519-MCIDS straps. No scope creep is evident."},"complexity_factors":["Single, specific technical requirement with clear scope","Only 2 defined document references (AFM, WBM)","No nested conditional logic or exceptions","Straightforward compliance deadline (fixed date)","Limited applicability (specific aircraft models + specific part number + specific installation certificate)","Short document (approximately 250 words)"],"plain_english_summary":"This CASA Airworthiness Directive prohibits using cargo straps part number 1519‑MCIDS as the sole means of securing freight to standard pallets on BAe 146/Avro RJ aircraft modified under STC ST01004NY. The straps may still be used as supplemental/back‑up restraints or to secure cargo to the aircraft floor, and operators must amend flight and weight‑and‑balance manuals. The measure prevents cargo shifts from straps that are not adequate as primary pallet restraints."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"This AD is narrowly focused on restricting the use of a specific cargo restraint strap assembly (part number 1519-MCIDS) when installed under a particular STC (ST01004NY). It requires only manual amendments and a change in operational practice for securing cargo. The directive does not expand beyond that original safety purpose or add unrelated obligations; it remains within the original scope of addressing the safe use of that strap assembly (see Applicability and Requirement)."},"complexity_factors":["Short, self-contained directive (single-page AD)","Single defined part number (1519-MCIDS) and single STC (ST01004NY) in Applicability","One clear required action: manual amendment (Requirement)","Single, short compliance timeframe (14 days)","Minor cross-reference to FAA AD 2004-22-01 but no complex cross-referenced obligations","Two brief notes permitting temporary insertion and cross-reference; no nested exceptions"],"plain_english_summary":"**What this directive does (mechanics first)**\n\n- Applies to British Aerospace BAe 146 and Avro 147-RJ (RJ/Avro RJ) series aeroplanes that have had cargo restraint strap assemblies part number 1519-MCIDS installed using Supplemental Type Certificate (STC) ST01004NY. (An STC is an approval that allows a modification to be made to an aircraft.)\n\n- Requires operators to amend two manuals: the Limitations section of the Aircraft Flight Manual (AFM) and the cargo-loading procedures in the Weight and Balance Manual (WBM). The amendment may be done by inserting a copy of this Airworthiness Directive (AD) into those manuals. (AFM and WBM are documents that tell flight crews and load planners how an aircraft may be operated and loaded safely.) (See: Requirement.)\n\n- The specific text to be added tells operators to stop using STC ST01004NY as the only method of securing cargo to TSO C90c/NAS3610 pallets. Instead, the straps (part number 1519-MCIDS) may be used only as supplemental restraints on those pallets, or to secure cargo to the aircraft floor fittings in accordance with the aircraft manufacturer’s weight and balance manuals and within the strap’s rated load (5,000 lbs). (See: Requirement.)\n\n- Compliance deadline: the manual changes must be made within 14 days after 1 December 2004. The AD became effective on 1 December 2004. (See: Compliance and Effective Date.)\n\n- A practical note in the AD allows removal of this inserted copy once the restriction has been incorporated into general revisions of the AFM and WBM (i.e. a temporary insertion is acceptable until a formal manual revision is published). (See: Note 1.)\n\n- The AD also cross-references a related FAA Airworthiness Directive (FAA AD 2004-22-01). (See: Note 2.)\n\n**Who this affects**\n\n- Aircraft operators and their maintenance/operations departments who operate BAe 146 / Avro RJ aeroplanes with the specified STC and part number 1519-MCIDS straps installed.\n- Load planners, flight crew and ground staff who use the AFM and WBM to plan and secure cargo.\n- Potentially suppliers or installers of the specified straps and holders if customers change how they buy or use restraint systems.\n\n**Why it matters (purpose claim and practical implications)**\n\n- The stated safety action is to prevent the installation/usage method authorised by STC ST01004NY from being the sole means of securing cargo to certain pallets, because the straps may not be adequate as the only restraint for those pallets (this is the safety rationale signalled by the Requirement and the cross-reference to the FAA AD).\n\n- Mechanically, the AD changes operator behaviour by mandating an update to operating manuals and by restricting how these particular straps may be relied on. That creates an immediate administrative task (manual amendment and communication to crews) and an operational constraint (cannot rely on the STC-installed straps alone for pallet restraint).\n\n**Costs, incentives and trade-offs**\n\n- Direct administrative cost: operators must update manuals and notify relevant staff within a short timeframe (14 days). (Requirement; Compliance.)\n\n- Operational cost / equipment substitution: if an operator had been relying on those straps as the only restraint for TSO C90c/NAS3610 pallets, they will need to adopt additional or alternative restraints or use aircraft floor fittings as the primary retention method. That can imply procurement, training, and potential changes in cargo handling routines.\n\n- Risk concentration and market effects: the restriction narrows the acceptable uses of this specific strap assembly (part number 1519-MCIDS) as a sole restraint. That reduces demand for that specific configuration as a standalone solution; strap manufacturers or STC holders may see reduced sales for that use-case but can still sell the straps for supplemental use (Requirement).\n\n- Implementation risk and compliance burden: the short compliance window (14 days) raises the chance of administrative non‑compliance or operational confusion if operators do not rapidly amend and circulate manual changes. The AD allows a temporary insertion of the directive text into manuals pending formal revisions (Note 1), which reduces the paperwork burden.\n\n- Enforcement and discretion: CASA (through its delegate) has required the manual amendment; enforcement will follow standard regulatory compliance processes for airworthiness directives. The AD sets the required behaviour rather than leaving it to operator discretion (Requirement).\n\n**Effects on private choice, competition and contract freedom**\n\n- Operators retain choice about how to comply within the safety constraint: they may use additional restraints, use aircraft floor fittings per manufacturer manuals, or limit cargo to weights within the strap’s rated load (5,000 lbs). The AD does not mandate a particular alternative system; it restricts a single previously authorised installation method. (Requirement.)\n\n- Suppliers of alternative pallet restraint systems may see increased demand; suppliers whose business depended on selling the STC-install as a standalone solution may see reduced demand for that particular use.\n\n**Implementation notes and cross-references**\n\n- The AD expressly permits inserting the AD text into the AFM and WBM as an interim step until those manuals are formally revised (Note 1).\n- The AD refers operators to FAA AD 2004-22-01, which contains the corresponding FAA safety action (Note 2)."},"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"}},"importantCases":[],"_links":{"self":"/api/acts/ad-bae-146-112-cargo-restraint-strap-assemblies","history":"/api/acts/ad-bae-146-112-cargo-restraint-strap-assemblies/history","analysis":"/api/acts/ad-bae-146-112-cargo-restraint-strap-assemblies/analysis","conflicts":"/api/acts/ad-bae-146-112-cargo-restraint-strap-assemblies/conflicts","importantCases":"/api/acts/ad-bae-146-112-cargo-restraint-strap-assemblies/important-cases","documents":"/api/acts/ad-bae-146-112-cargo-restraint-strap-assemblies/documents"}}