{"id":"F2006B05944","name":"AD/PA-36/6 Amdt 3 - Wing Structural Fatigue Limitations","slug":"ad-pa-36-6-amdt-3-wing-structural-fatigue-limitations","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":136083,"registerId":"commonwealth-F2006B05944-current","compilationNumber":null,"startDate":"2026-04-03","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/PA-36/6 Amdt 2 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/PA-36/6","sectionType":"part","heading":"AD/PA-36/6","content":"# AD/PA-36/6\n\nAmdt 3\n\nApplicability: All models.","sortOrder":1},{"sectionNumber":"Wing Structural Fatigue Limitations 7/20","sectionType":"part","heading":"Wing Structural Fatigue Limitations 7/2000","content":"# AD/PA-36/6\n\nAmdt 3\n\nApplicability: All models.\n\n#   \nWing Structural Fatigue Limitations 7/2000","sortOrder":2}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":4,"scope_assessment":{"changed":false,"description":"This appears to be a routine amendment to an existing airworthiness directive. The scope remains focused on wing structural fatigue limitations for the PA-36 aircraft series. The 'All models' applicability suggests it maintains the original scope rather than expanding it. Without the full text of Amendment 2, it's impossible to determine if the technical requirements have expanded, but the regulatory mechanism (AD issuance under CAR 1998) remains consistent with original intent."},"complexity_factors":["Multiple redundant headers and formatting artifacts suggesting OCR or document conversion errors","Cross-reference to revoked predecessor (AD/PA-36/6 Amdt 2) without explaining what changed","Reference to subregulation 39.1(1) of CAR 1998 (Civil Aviation Regulations) requiring external legal knowledge","Fragmented structure — actual 'Requirement' and 'Compliance' sections mentioned but not fully reproduced in the extract","Technical aviation terminology ('airworthiness directive', 'fatigue limitations') requiring domain knowledge"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** issued by the **Civil Aviation Safety Authority (CASA)** — Australia's aviation safety regulator. Think of it as a mandatory safety recall for aircraft.\n\n**What it does:**\n- **Revokes** (cancels) a previous version of this directive (Amendment 2)\n- **Issues a new version** (Amendment 3) that applies to **all models** of the Piper PA-36 aircraft\n- Requires specific **wing structural fatigue inspections or limitations** to address safety concerns about metal fatigue in the aircraft's wings\n\n**Who it affects:**\n- Owners and operators of Piper PA-36 aircraft (agricultural/special purpose planes)\n- Maintenance engineers who service these aircraft\n- Anyone responsible for keeping these planes airworthy\n\n**Why it matters:**\nMetal fatigue in wing structures can lead to **catastrophic structural failure** in flight. This directive mandates specific actions to detect or prevent fatigue cracks before they become dangerous. Compliance is **legally mandatory** — you cannot legally fly the aircraft without meeting these requirements.\n\n**Key sections:**\n- **Applicability:** All PA-36 models\n- **Compliance:** Specific deadlines for when actions must be completed\n- **Requirements:** The actual inspection/repair actions required"},"flash_summary":{"complexity_score":5,"scope_assessment":{"changed":true,"description":"The instrument explicitly revokes AD/PA-36/6 Amdt 2 and issues AD/PA-36/6 Amdt 3 (see preamble: \"revokes Airworthiness Directive (AD)AD/PA-36/6 Amdt 2 and issues the following AD\"). That revocation and reissuance constitutes a change in scope or requirements relative to the prior amendment. The AD as issued applies to \"All models\" and sets compliance obligations as described in the requirement and compliance sections; however, the specific substantive differences between Amdt 2 and Amdt 3 are not detailed in the supplied text, so the exact nature of the scope change (technical or administrative) cannot be determined from this source alone."},"complexity_factors":["Revocation and reissuance of a prior AD (revokes AD/PA-36/6 Amdt 2) introduces change-management complexity for operators tracking compliance history.","Delegated discretion: actions are defined as those the CASA delegate considers necessary under subregulation 39.1(1) of CAR 1998, which concentrates decision authority in the regulator rather than prescribing fixed measures in the body of the AD.","Cross-reference dependence: the AD requires compliance \"in accordance with the instructions set out in the requirement section\" and timing in the \"compliance section\", but the detailed instructions are not included in the supplied text, creating uncertainty until those sections are consulted.","Broad applicability: the AD applies to \"All models,\" which widens the population affected and can increase aggregate coordination and supply issues.","Technical subject matter: the topic is \"Wing Structural Fatigue Limitations,\" a specialised engineering area that typically requires skilled maintenance, inspections, and possibly structural repair or life-limit changes.","Operational impacts: required actions will likely involve aircraft downtime and parts/labour costs, requiring operators to schedule around commercial operations."],"plain_english_summary":"This AD revokes AD/PA‑36/6 Amdt 2 and issues AD/PA‑36/6 Amdt 3 (Wing Structural Fatigue Limitations), applying to all models. It requires operators and maintenance organisations to carry out the corrective inspections, repairs or modifications set out in the AD’s requirement and compliance sections to address an identified unsafe condition. CASA’s delegate determines the necessary actions; operators bear costs, downtime and record‑keeping burdens while maintenance providers perform the work."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-36-6-amdt-3-wing-structural-fatigue-limitations","history":"/api/acts/ad-pa-36-6-amdt-3-wing-structural-fatigue-limitations/history","analysis":"/api/acts/ad-pa-36-6-amdt-3-wing-structural-fatigue-limitations/analysis","conflicts":"/api/acts/ad-pa-36-6-amdt-3-wing-structural-fatigue-limitations/conflicts","importantCases":"/api/acts/ad-pa-36-6-amdt-3-wing-structural-fatigue-limitations/important-cases","documents":"/api/acts/ad-pa-36-6-amdt-3-wing-structural-fatigue-limitations/documents"}}