{"id":"F2006B04153","name":"AD/BEECH 65/57 Amdt 4 - Wing Panel to Centre Section Attachment - Steel Bolts and Nuts","slug":"ad-beech-65-57-amdt-4-wing-panel-to-centre-section-attachment-steel-bolts-and-nuts","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43882,"registerId":"commonwealth-F2006B04153-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# AIRWORTHINESS DIRECTIVE\n\n![](image.002.png)\n\n![](image.002.png)  \nFor the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/BEECH 65/57 Amdt 3 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.","sortOrder":0},{"sectionNumber":"AD/BEECH 65/57","sectionType":"part","heading":"AD/BEECH 65/57","content":"# AD/BEECH 65/57\n\nAmdt 4\n\nApplicability: All models.","sortOrder":1},{"sectionNumber":"Wing Panel to Centre Section Attachment ","sectionType":"part","heading":"Wing Panel to Centre Section Attachment - Steel Bolts and Nuts","content":"# Wing Panel to Centre Section Attachment \\- Steel Bolts and Nuts\n\n  \n11/2000","sortOrder":2}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"The instrument expressly revokes AD/BEECH 65/57 Amdt 3 and issues AD/BEECH 65/57 Amdt 4 under subregulation 39.1(1) of CAR 1998, so the legal instrument in force has changed (revocation and reissue). The excerpt shows applicability remains stated as \"All models.\" The provided text does not include the requirement or compliance sections, so it is not possible from this excerpt to determine whether the substantive technical scope (specific inspections, parts, intervals, or deadlines) differs from Amdt 3; affected parties must compare the full Amdt 3 and Amdt 4 texts to assess substantive changes."},"complexity_factors":["Revocation and reissue of a prior amendment (Amdt 3 revoked, Amdt 4 issued) introduces the need to compare texts to determine substantive changes.","Reference to regulatory power (subregulation 39.1(1) of CAR 1998) indicates statutory authority but requires familiarity with CAR 1998 to understand enforcement context.","Key substantive content (the requirement and compliance sections) is missing from the provided excerpt, creating uncertainty about specific technical and timing obligations.","Broad applicability note (\"All models\") increases the number of affected operators but does not clarify model-specific differences.","The AD delegates technical determinations to a CASA delegate (discretion in defining \"action... necessary to correct the unsafe condition\"), which can create variability in actual obligations unless the full requirement text is prescriptive."],"plain_english_summary":"This AD revokes the prior amendment and issues a new mandatory directive, targeting the wing panel-to-centre‑section attachment (steel bolts and nuts) on all Beech 65 models. CASA’s delegate requires operators and maintenance organisations to perform the specified inspections/repairs, in the circumstances and timeframes set out in the full AD. Costs, labour and downtime fall to operators; consult the complete requirement and compliance sections (and compare Amdt 3 vs Amdt 4) for exact tasks and deadlines."},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This appears to be a routine amendment (Amendment 4) to an existing Airworthiness Directive. The scope remains consistent with the original AD/BEECH 65/57 first issued in 2000 — addressing wing attachment bolt integrity on Beechcraft 65 aircraft. Amendment 4 likely updates compliance times, inspection methods, or incorporates new service information without expanding beyond the original safety purpose."},"complexity_factors":["Short, single-purpose directive focused on one specific mechanical component","Minimal cross-referencing (only references the previous amendment being revoked and the enabling regulation CAR 1998 subregulation 39.1(1))","Standard AD structure with clearly delineated sections (Applicability, Requirement, Compliance, Background)","No nested conditional logic or extensive defined terms","Technical content refers to external maintenance manuals for actual implementation details"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** issued by the Civil Aviation Safety Authority (CASA) that applies to all models of Beechcraft 65 series aircraft (also known as the Beechcraft Queen Air).\n\n**What it does:**\nThis directive **revokes the previous version** (Amendment 3) and issues a new requirement (Amendment 4) regarding the **wing attachment bolts** that connect the wing panels to the centre section of the aircraft.\n\n**The safety issue:**\nThe steel bolts and nuts that attach the wings to the centre section of the aircraft can develop problems over time. If these bolts fail, the wing could separate from the fuselage in flight — a catastrophic failure.\n\n**What aircraft owners/operators must do:**\n- Inspect and potentially replace the steel bolts and nuts at the wing-to-centre-section attachment points\n- Follow the specific instructions in the \"Requirement\" section (not fully shown in this extract)\n- Complete the required actions by the deadlines specified in the \"Compliance\" section\n\n**Who it affects:**\nAnyone who owns, operates, or maintains Beechcraft 65 series aircraft (all models).\n\n**Why it matters:**\nThis is a **mandatory safety directive**. Non-compliance means the aircraft cannot legally fly. The directive exists because CASA has identified an unsafe condition that requires corrective action to prevent structural failure."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-65-57-amdt-4-wing-panel-to-centre-section-attachment-steel-bolts-and-nuts","history":"/api/acts/ad-beech-65-57-amdt-4-wing-panel-to-centre-section-attachment-steel-bolts-and-nuts/history","analysis":"/api/acts/ad-beech-65-57-amdt-4-wing-panel-to-centre-section-attachment-steel-bolts-and-nuts/analysis","conflicts":"/api/acts/ad-beech-65-57-amdt-4-wing-panel-to-centre-section-attachment-steel-bolts-and-nuts/conflicts","importantCases":"/api/acts/ad-beech-65-57-amdt-4-wing-panel-to-centre-section-attachment-steel-bolts-and-nuts/important-cases","documents":"/api/acts/ad-beech-65-57-amdt-4-wing-panel-to-centre-section-attachment-steel-bolts-and-nuts/documents"}}