{"id":"F2006B10945","name":"AD/JETSTREAM/75 - Nose Gear Toggle Attachments","slug":"ad-jetstream-75-nose-gear-toggle-attachments","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":56499,"registerId":"commonwealth-F2006B10945-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/JETSTREAM/75 - Nose Gear Toggle Attachments","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-generator: Aspose.Words for .NET 22.10.0\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  British Aerospace BAe 3100 (Jetstream) Series Aeroplanes\n\n \n\nAD/JETSTREAM/75 Nose Gear Toggle Attachments 2/97\n\nApplicability: All Jetstream Series 3100 and Jetstream 3200 Series aircraft.\n\n \n\nRequirement: Action in accordance with Jetstream Aircraft Alert Service Bulletin 32-JA 960601.\n\n \n\nNote: UK CAA AD 002-10-96 and AAPH SB 32-66 Revision 1 refer.\n\n \n\nCompliance: Unless already accomplished, before 30 April 1997.\n\n \n\nBackground: The attachment brackets for the nose gear upper and lower toggles may be of reduced thickness. A reduced wall thickness affects the fatigue life of the nose landing gear assembly and a new fatigue limit may be required.\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The AD is narrowly targeted and its scope matches the stated problem in the text: inspect/rectify nose gear toggle attachment brackets on Jetstream 3100/3200 aircraft because of possible reduced wall thickness affecting fatigue life (Applicability; Background; Requirement). There is no indication in the instrument text that the AD expands beyond that original technical remit. Compliance is constrained to following the referenced service bulletin by the specified date (Requirement; Compliance)."},"complexity_factors":["Narrow technical scope limited to Jetstream Series 3100 and 3200 (Applicability)","Mandates adherence to an external technical document (Jetstream Aircraft Alert Service Bulletin 32-JA 960601) rather than specifying technical steps in the AD (Requirement)","Fixed compliance deadline introduces scheduling pressure for operators (Compliance)","Resolution requires technical maintenance actions and possible parts replacement, depending on inspection results (Requirement; Background)","Cross-references to other authorities/documents (UK CAA AD and AAPH SB) that operators may need to consult (Note)"],"plain_english_summary":"### What this instrument does\n\n- This is an Airworthiness Directive (AD) that requires specific action on British Aerospace Jetstream Series 3100 and 3200 aeroplanes (Applicability).  \n- It orders operators to carry out the work described in Jetstream Aircraft Alert Service Bulletin 32-JA 960601 (Requirement).  \n- The work must be done by 30 April 1997 unless it has already been completed (Compliance).\n\n### Who it affects\n\n- Owners and operators of all Jetstream Series 3100 and 3200 aircraft (Applicability).  \n- Maintenance organisations and mechanics who will perform the inspection/repair specified in the referenced service bulletin (Requirement).\n\n### Why it matters (official statement and mechanical effect)\n\n- The directive says the attachment brackets for the nose gear upper and lower toggles may have reduced wall thickness. Reduced thickness affects the fatigue life of the nose landing gear assembly and may require a new fatigue limit (Background).  \n- Mechanically, the AD imposes an obligation to follow the manufacturer service bulletin to identify and, if necessary, correct the condition (Requirement). The intended mechanical effect is to address bracket thickness and associated fatigue life before the compliance date (Background; Compliance).\n\n### Who pays, who decides, and what must change in behaviour\n\n- Who pays: Aircraft owners/operators will bear the direct costs of performing the actions in the service bulletin (Requirement) and any parts or replacements identified by that work (implicit in Requirement and Background).  \n- Who decides: The Civil Aviation Safety Authority issued the AD as the regulatory requirement (title and instrument header). The technical content to be followed is set by the manufacturer’s Jetstream Aircraft Alert Service Bulletin 32-JA 960601 (Requirement).  \n- Behaviour change required: Operators must schedule and complete the inspection/repair actions specified in the service bulletin by 30 April 1997 unless already done (Requirement; Compliance).\n\n### Trade-offs, compliance burden and implementation points to watch\n\n- Compliance burden: The work is technical and will require maintenance resources and possible parts replacement; this creates direct maintenance cost and aircraft downtime (Requirement; Compliance).  \n- Implementation dependency: The AD makes compliance contingent on following an external document (the manufacturer’s service bulletin). Effective compliance therefore depends on availability and clarity of that bulletin and on access to the specified parts and technical expertise (Requirement; Note).  \n- Regulatory mechanism and enforcement: The AD prescribes a mandatory action and a calendar deadline; the regulator determines the requirement while the manufacturer technical bulletin specifies the steps (Requirement; Compliance).  \n\n### Linked references in the instrument\n\n- The AD refers to UK CAA AD 002-10-96 and AAPH Service Bulletin 32-66 Revision 1 for related material (Note)."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, time-bound safety directive addressing a specific mechanical defect. It has not expanded beyond its original purpose of mandating inspection/repair of nose gear toggle attachments."},"complexity_factors":["Very short document (under 200 words)","Only 1 substantive requirement (comply with referenced service bulletin)","No defined terms section — uses plain technical language","Single cross-reference to external manufacturer bulletin","No conditional logic or nested exceptions","Straightforward applicability (all aircraft of specific model series)"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA) for specific aircraft.\n\n**What it does:**\nOrders owners and operators of British Aerospace Jetstream 3100 and 3200 series aircraft to inspect and potentially repair the nose landing gear. Specifically, they must check the \"toggle attachments\" — the brackets that connect parts of the nose gear — because some may have been manufactured with thinner walls than specified. Thin walls weaken the gear and could cause it to fail from metal fatigue (repeated stress cracking) over time.\n\n**Who it affects:**\nAnyone who owns, operates, or maintains Jetstream 3100 or 3200 aircraft in Australia.\n\n**What they must do:**\nFollow the instructions in a manufacturer bulletin called \"Jetstream Aircraft Alert Service Bulletin 32-JA 960601\" — this details exactly how to inspect the parts and what fixes are needed.\n\n**Deadline:**\nThe work had to be completed before 30 April 1997 (unless already done).\n\n**Why it matters:**\nLanding gear failure on takeoff or landing is extremely dangerous. This directive prevents potential accidents by catching a manufacturing defect before it causes structural failure."}},"importantCases":[],"_links":{"self":"/api/acts/ad-jetstream-75-nose-gear-toggle-attachments","history":"/api/acts/ad-jetstream-75-nose-gear-toggle-attachments/history","analysis":"/api/acts/ad-jetstream-75-nose-gear-toggle-attachments/analysis","conflicts":"/api/acts/ad-jetstream-75-nose-gear-toggle-attachments/conflicts","importantCases":"/api/acts/ad-jetstream-75-nose-gear-toggle-attachments/important-cases","documents":"/api/acts/ad-jetstream-75-nose-gear-toggle-attachments/documents"}}