{"id":"F2006B03618","name":"AD/BEECH 18/2 - Landing Gear Retracting Mechanism - Inspection","slug":"ad-beech-18-2-landing-gear-retracting-mechanism-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43209,"registerId":"commonwealth-F2006B03618-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 18/2 - Landing Gear Retracting Mechanism - Inspection","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-description: CASA Airworthiness Directive\nmeta-generator: Aspose.Words for .NET 22.10.0\nmeta-keywords: Issue NK,Aircraft below 5700 kg,Beechcraft 18 Series Aeroplanes,Landing Gear Retracting Mechanism - Inspection,2\ntitle: Airworthiness Directive - AD/BEECH 18/2 - Landing Gear Retracting Mechanism - Inspection\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)  Beechcraft 18 Series Aeroplanes\n\n \n\nAD/BEECH 18/2 Landing Gear Retracting NK Mechanism - Inspection\n\nApplicability: Model C-18S and AT-11. Document:  1. Beechcraft SB C18-6; or\n\n2. FAA AD 47-6-9; or 3. ANO 105.1.4.3.6.2.\n\nCompliance: Forthwith.\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\n \n\nFederal Register of Legislative Instruments F2006B03618\n","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive focused on a specific mechanical defect in specific aircraft models. It has not expanded beyond its original purpose of mandating a landing gear inspection."},"complexity_factors":["Extremely short — only 8 substantive lines of regulatory text","No defined terms section; all language is plain technical aviation terminology","No conditional logic, exceptions, or nested provisions","Single, unambiguous compliance requirement ('Forthwith')","Cross-references are simple 'pick one of three' alternatives to technical standards, not legislative cross-references","No penalty provisions, review mechanisms, or administrative procedures included"],"plain_english_summary":"**What this is:** This is an **Airworthiness Directive (AD)** — a mandatory safety order issued by the Civil Aviation Safety Authority (CASA) that requires specific aircraft to undergo inspection or repair.\n\n**What it does:** It orders owners and operators of certain **Beechcraft 18 Series aeroplanes** (specifically Model C-18S and AT-11) to immediately inspect their **landing gear retracting mechanism**.\n\n**Who it affects:** Anyone who owns, operates, or maintains these specific Beechcraft aircraft models in Australia.\n\n**Why it matters:** Landing gear failures can be catastrophic. This directive likely addresses a known safety defect or wear pattern in how these particular aircraft raise and lower their wheels. The word \"Forthwith\" means **do it immediately** — there's no grace period.\n\n**How to comply:** You must follow one of three technical documents:\n- Beechcraft Service Bulletin C18-6 (manufacturer's instructions), OR\n- FAA AD 47-6-9 (the equivalent US safety order), OR  \n- ANO 105.1.4.3.6.2 (an older Australian aviation order)\n\n**The bottom line:** If you fly or maintain one of these specific Beechcraft models, you cannot legally operate the aircraft until you've inspected the landing gear retraction system according to one of those three approved methods."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The AD text specifies the affected models and requires an immediate inspection; it does not indicate any change from a prior scope or alter the set of affected aircraft within this instrument. The instrument itself contains no language describing an expansion or reduction of scope relative to an earlier instrument."},"complexity_factors":["Narrow applicability (only Model C-18S and AT-11) reduces scope complexity.","Immediate compliance timing (\"Forthwith\") raises operational urgency but not procedural complexity.","Procedural detail is externalised to three referenced documents, so understanding exact steps requires locating and reading those documents.","The AD text is short and prescriptive; absence of in-text procedural detail simplifies the AD itself but shifts complexity to document retrieval and interpretation.","No alternative compliance path or grace period specified increases certainty but limits flexibility."],"plain_english_summary":"This airworthiness directive mandates an immediate (\"forthwith\") inspection of the landing-gear retracting mechanism on Beechcraft Model C-18S and AT-11 aircraft, using the procedures in Beechcraft SB C18-6, FAA AD 47-6-9, or ANO 105.1.4.3.6.2.  \n\nIt directly affects owners/operators and maintenance organisations — imposing prompt inspection, potential repairs, and associated costs and downtime, with compliance tied to the referenced documents."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-18-2-landing-gear-retracting-mechanism-inspection","history":"/api/acts/ad-beech-18-2-landing-gear-retracting-mechanism-inspection/history","analysis":"/api/acts/ad-beech-18-2-landing-gear-retracting-mechanism-inspection/analysis","conflicts":"/api/acts/ad-beech-18-2-landing-gear-retracting-mechanism-inspection/conflicts","importantCases":"/api/acts/ad-beech-18-2-landing-gear-retracting-mechanism-inspection/important-cases","documents":"/api/acts/ad-beech-18-2-landing-gear-retracting-mechanism-inspection/documents"}}