{"id":"F2006B05142","name":"AD/CESSNA 185/7 Amdt 1 - Wing Main Spar and Lower Skin","slug":"ad-cessna-185-7-amdt-1-wing-main-spar-and-lower-skin","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":45213,"registerId":"commonwealth-F2006B05142-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 185/7 Amdt 1 - Wing Main Spar and Lower Skin","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)  Cessna 185 Series Aeroplanes\n\n \n\nAD/CESSNA 185/7\n\nAmdt 1\n\n\nWing Main Spar and Lower Skin 10/67\n\n \n\nApplicability: All models in agricultural category.\n\n \n\nRequirement: Carry out a visual inspection for cracking of the wings in the following areas:\n\n \n\n1. The corners of the skin cutouts through which the lift strut fork passes.\n\n\n \n\n2.    All visable elements of the main spar lower flange front and rear faces in the region of the lift strut attachment.\n\n \n\nPay particular attention to the areas around the spar to skin rivets. The affected areas must be thoroughly cleaned before inspection.\n\n \n\nCompliance: Before 4000 hours total time in service on wings and thereafter at intervals not exceeding 100 hours time in service.\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 supplied text is the amended AD itself and specifies inspections for agricultural‑category Cessna 185 wings with the stated compliance times. The document does not include the original AD text or describe any widening or narrowing of applicability, so no change of scope can be identified from the material provided."},"complexity_factors":["Narrow applicability: applies only to Cessna 185 models in the agricultural category (straightforward target population).","Technical specificity: identifies precise inspection locations (skin cutout corners, main spar lower flange faces, rivet areas) requiring trained visual assessment.","Preparation requirement: mandates thorough cleaning of affected areas before inspection, adding time and materials cost.","Time‑based recurring schedule: compliance timing (before 4,000 hours, then every 100 hours) imposes ongoing operational/maintenance planning and recordkeeping.","Detection variability: visual inspection only — potential for inconsistent detection depending on inspector skill/lighting/access.","Enforcement and decision authority: directive issued under Civil Aviation Regulations, placing compliance responsibility on owners/operators and enforcement with regulator discretion."],"plain_english_summary":"This Airworthiness Directive requires owners/operators of Cessna 185 aeroplanes in the agricultural category to carry out visual inspections for cracking around the wing lift‑strut cutouts, the main spar lower flange (front and rear faces) near the lift‑strut attachment, and especially around spar‑to‑skin rivets. The areas must be cleaned before inspection. The regulator (Civil Aviation Safety Authority) mandates the first inspection before 4,000 hours on the wings and then every 100 hours thereafter, shifting inspection costs and labour to operators."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard airworthiness directive maintaining its original purpose: mandating specific safety inspections for a defined aircraft type in a high-stress operational category. No scope creep detected."},"complexity_factors":["Single, clearly defined applicability (agricultural category Cessna 185s only)","Straightforward two-part inspection requirement with no nested conditions","Simple compliance timeline (one-time threshold + recurring interval)","No defined terms section or cross-references to other legislation","Minimal conditional language—only 'before' and 'thereafter' timing requirements","Total length is approximately 150 words"],"plain_english_summary":"This is an **Airworthiness Directive** (a mandatory safety order) issued by Australia's Civil Aviation Safety Authority for **Cessna 185 series aeroplanes** used in agricultural operations (crop dusting, aerial spraying, etc.).\n\n**What it does:**\n- Requires owners and operators to **inspect the wings for cracks** in specific high-stress areas:\n  - The corners where the lift strut (the metal brace that supports the wing) passes through the wing skin\n  - The front and back faces of the main spar's lower flange (the main structural beam of the wing) near where the lift strut attaches\n- Inspectors must **clean the area thoroughly** first and pay special attention to the rivets connecting the spar to the skin.\n\n**Who it affects:**\n- Owners and operators of **all Cessna 185 models** used in agricultural work.\n\n**Why it matters:**\n- Agricultural aircraft endure extreme stress (low-level flying, heavy loads, rough fields). Cracks in the wing structure can lead to **catastrophic wing failure**. This directive prevents accidents by catching fatigue damage early.\n\n**When to comply:**\n- **First inspection:** Before the wings reach 4,000 total flight hours\n- **Repeat inspections:** Every 100 flight hours thereafter"}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-185-7-amdt-1-wing-main-spar-and-lower-skin","history":"/api/acts/ad-cessna-185-7-amdt-1-wing-main-spar-and-lower-skin/history","analysis":"/api/acts/ad-cessna-185-7-amdt-1-wing-main-spar-and-lower-skin/analysis","conflicts":"/api/acts/ad-cessna-185-7-amdt-1-wing-main-spar-and-lower-skin/conflicts","importantCases":"/api/acts/ad-cessna-185-7-amdt-1-wing-main-spar-and-lower-skin/important-cases","documents":"/api/acts/ad-cessna-185-7-amdt-1-wing-main-spar-and-lower-skin/documents"}}