{"id":"F2006B03702","name":"AD/BEECH 200/48 - Ailerons","slug":"ad-beech-200-48-ailerons","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43293,"registerId":"commonwealth-F2006B03702-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 200/48 - Ailerons","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nBeechcraft 200 (Super King Air) Series Aeroplanes\n\nAD/BEECH 200/48 Ailerons 1/90\n\nApplicability: Model B200 with S/N BB-1246 through BB-1271, and BB-1273 through BB-1285.\n\nModel A200 CT with S/N BP-59 through BP-63. Model B200 C with S/N BP-64 through BP-66 and BV-1 through BV-8. Any aircraft which may have installed a replacement aileron for any reason subsequent to 1 January 1985.\n\nRequirement: Action in accordance with Beechcraft Mandatory SB No 2256.\n\nNote: FAA AD 89-22-14 refers.\n\nCompliance: Prior to exceeding 100 hours time in service after 25 January 1990 or at the next scheduled inspection for issue of a Maintenance Release after 25 January 1990, whichever occurs later.\n\nBackground: Country of origin AD. Foam may retain water and create an aileron out of balance condition. The out of balance limit could result in control surface flutter.","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive addressing a specific mechanical defect in specific aircraft. It has not expanded beyond its original purpose of preventing aileron flutter in affected Beechcraft models."},"complexity_factors":["Very short document (under 200 words)","Only 4 defined applicability criteria (specific serial number ranges)","Single requirement referencing an external technical document (Beechcraft SB 2256)","Simple compliance deadline structure (hours-based or inspection-based, whichever is later)","No nested exceptions or conditional logic","No internal cross-references to other legislation sections","Straightforward factual background (water retention → imbalance → flutter)"],"plain_english_summary":"This is a **safety order for specific Beechcraft aeroplanes**.\n\n**What it does:**\nThis document is an **Airworthiness Directive** (AD) — a legally binding instruction issued by Australia's Civil Aviation Safety Authority (CASA). It requires owners and operators of certain Beechcraft 200 series aircraft to inspect and fix a problem with the **ailerons** (the hinged flaps on the wings that control rolling and turning).\n\n**The problem:**\nThe foam inside the ailerons can absorb water, making the control surface **out of balance**. If an aileron is too heavy on one side, it can cause **flutter** — a dangerous vibration that can damage the wing or cause loss of control.\n\n**Who must act:**\nOwners of specific Beechcraft models including:\n- B200 (serial numbers BB-1246 to BB-1271, and BB-1273 to BB-1285)\n- A200 CT (serial numbers BP-59 to BP-63)\n- B200 C (serial numbers BP-64 to BP-66 and BV-1 to BV-8)\n- Any of these aircraft that had an aileron replaced after 1 January 1985\n\n**What must be done:**\nFollow the instructions in **Beechcraft Mandatory Service Bulletin No. 2256** (a technical repair notice from the manufacturer).\n\n**When:**\nBefore the aircraft flies more than 100 hours after 25 January 1990, or at the next scheduled maintenance check after that date — whichever comes later.\n\n**Why it matters:**\nControl surface flutter can destroy an aircraft in flight. This directive prevents accidents by ensuring waterlogged, unbalanced ailerons are detected and repaired before they become dangerous."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The directive implements the country-of-origin corrective action (referenced FAA AD) for a specific technical defect and confines its reach to listed serial numbers plus aircraft that had replacement ailerons installed after 1 January 1985 (Applicability; Note; Background). It does not expand scope beyond that defect or those aircraft and therefore does not change the original scope identified in the background/Note."},"complexity_factors":["Narrow applicability tied to specific serial-number ranges and to any aircraft with replacement ailerons installed after 1 January 1985 (Applicability).","Mandates performance of an external, technical document (Beechcraft Mandatory SB No. 2256) rather than setting step-by-step actions in the AD itself (Requirement).","Compliance timing is specific and conditional (prior to exceeding 100 hours after 25 January 1990 or at next scheduled Maintenance Release after that date), requiring record checks and scheduling (Compliance).","Technical nature of the defect (foam retaining water causing out-of-balance and possible flutter) requires qualified maintenance work; practical complexity sits with maintenance execution (Background)."],"plain_english_summary":"This directive requires owners/operators of specified Beechcraft 200 (Super King Air) aeroplanes — and any with ailerons replaced after 1 Jan 1985 — to carry out the corrective maintenance in Beechcraft Mandatory Service Bulletin No. 2256 because foam in the aileron assembly can retain water, cause an out‑of‑balance condition and risk control‑surface flutter.\n\nCompliance (at operators’ expense) must occur before the aeroplane accrues 100 flight hours after 25 Jan 1990 or at the next Maintenance Release, and is enforced by CASA."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-200-48-ailerons","history":"/api/acts/ad-beech-200-48-ailerons/history","analysis":"/api/acts/ad-beech-200-48-ailerons/analysis","conflicts":"/api/acts/ad-beech-200-48-ailerons/conflicts","importantCases":"/api/acts/ad-beech-200-48-ailerons/important-cases","documents":"/api/acts/ad-beech-200-48-ailerons/documents"}}