{"id":"F2006B04064","name":"AD/BEECH 56/32 - Flap Flex Shaft Assembly","slug":"ad-beech-56-32-flap-flex-shaft-assembly","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43697,"registerId":"commonwealth-F2006B04064-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# ![](image.001.png)![](image.001.png)AIRWORTHINESS DIRECTIVE\n\n![](image.001.png)For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (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.\n\nBeechcraft 56TC (Turbo Baron) Series Aeroplanes","sortOrder":0},{"sectionNumber":"AD/BEECH 56/32 Flap Flex Shaft Assembly ","sectionType":"part","heading":"AD/BEECH 56/32 Flap Flex Shaft Assembly 3/2002","content":"# AD/BEECH 56/32 Flap Flex Shaft Assembly 3/2002\n\nDM\n\nApplicability: Beechcraft Model 56TC and A56TC aircraft, all serial numbers.\n\nRequirement: 1. Review the aircraft records to determine if either the LH or the RH flap flex shaft, or the flap actuator has been replaced since 1 March 2000. If these components have not been replaced since 1 March 2000, no further action is required. Make an appropriate certification in the aircraft log book.\n\n    2. If either a LH or RH flap flex shaft, or a flap actuator has been replaced since 1 March 2000, inspect the identification label for manufacture date of the flap flex shaft assemblies in accordance with Raytheon Service Bulletin 27-3478. Flex shafts manufactured before January 2000 and after April 2001 do not require replacement.\n\n    3. Replace flap flex shafts that were manufactured between January 2000 through April 2001\n\nNote: FAA AD 2001-23-10 refers.\n\nCompliance: 1. Within 25 flight hours from the effective date of this Airworthiness Directive.\n\n    2. Within 25 flight hours from the effective date of this Airworthiness Directive.\n\n    3. Before further flight.\n\nThis Airworthiness Directive becomes effective on 30 January 2002.","sortOrder":1}],"analysis":{"flash_summary_failed":{"failed":true,"reason":"A positive credit balance is required for all requests, including BYOK, so fallback providers remain available. Add credits at https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Fmodal%3Dtop-up to continue.","source":"analysis-cron"},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"This AD is narrowly focused on a specific component (flap flex shaft assemblies) for two Beechcraft models and prescribes record review, label inspection and replacement for parts in a defined manufacture-date window. The requirements align with the stated aim of correcting an unsafe condition related to those parts. The instrument does not broaden its scope beyond that original safety-focused purpose or add unrelated obligations; it instead specifies procedural steps and a date-limited replacement obligation consistent with the stated intent."},"complexity_factors":["Short, single-product applicability (Beechcraft Model 56TC and A56TC only)","Three simple conditional steps (records review; label inspection if replaced since 1 March 2000; replacement if manufacture date between Jan 2000–Apr 2001)","Two distinct compliance timeframes (25 flight hours for review/inspection; before further flight for replacement)","Cross-references to external documents: Raytheon Service Bulletin 27-3478 (procedural) and FAA AD 2001-23-10 (reference)","Date-range condition (manufacture-date window) creates a single-layer conditional rule rather than nested exceptions","Reliance on maintenance records and physical label legibility introduces practical complexity (verification risk) despite simple legal text"],"plain_english_summary":"**What this instrument does (mechanically)**\n\n- Applies to all Beechcraft Model 56TC and A56TC aeroplanes (all serial numbers). (Applicability)\n\n- Requires the owner/operator to check maintenance records to see whether either left-hand (LH) or right-hand (RH) flap flex shaft, or the flap actuator, has been replaced since 1 March 2000. If none of those parts were replaced since that date, no further action is required, but the check must be recorded in the aircraft log book. (Requirement 1; Compliance 1)\n\n- If any of those parts were replaced since 1 March 2000, the operator must inspect the identification label on the flap flex shaft assemblies to determine their manufacture date, following the procedures in Raytheon Service Bulletin 27-3478. Flex shafts with manufacture dates before January 2000 or after April 2001 do not require replacement. (Requirement 2; Compliance 2)\n\n- Any flap flex shafts manufactured between January 2000 and April 2001 must be replaced before the aircraft is next flown. (Requirement 3; Compliance 3)\n\n- Timing: the records review and the identification-label inspection must be completed within 25 flight hours from the effective date of the directive; replacement of affected units must occur before further flight. (Compliance)\n\n- The directive cross-references FAA AD 2001-23-10 and relies on Raytheon Service Bulletin 27-3478 for inspection instructions.\n\n**Who this affects**\n\n- Owners and operators of Beechcraft 56TC / A56TC aeroplanes. They must perform or arrange the records check, any required label inspections, and pay for and arrange replacement parts and associated maintenance where necessary. Maintenance organisations carrying out the work must follow the Raytheon service bulletin when inspecting identification labels. The regulating decision is issued by CASA (the delegate identified in the directive). (Applicability; Requirement)\n\n**Why it matters (stated purpose and practical implications)**\n\n- The directive is issued under CASA’s airworthiness powers to correct an identified unsafe condition (the AD text states this is the purpose). Practically, it identifies a limited manufacturing-date window (Jan 2000–Apr 2001) for flap flex shafts that requires replacement. Mechanically, compliance prevents continued operation with any flap flex shaft within that date range.\n\n**Costs, incentives and trade-offs**\n\n- Who pays: aircraft owners/operators pay for inspections, log-book certification, parts and labour for replacements. (Requirement; Compliance)\n\n- Operational impact: aircraft with an affected flex shaft must not fly until that shaft is replaced, which can cause downtime and scheduling disruption. (Requirement 3; Compliance 3)\n\n- Compliance burden: an administrative record review and log-book entry (low burden); a physical label inspection following the manufacturer’s service bulletin (moderate burden if access is straightforward); replacement of parts for shafts in the specified date window (potentially significant cost and lead time). (Requirement 1–3)\n\n- Implementation risk: the measure depends on accurate maintenance records and on readable/accurate identification labels. If labels are missing or illegible, operators may need further disassembly or rely on replacement to achieve compliance. The AD also depends on an external service bulletin for inspection steps and on an FAA AD as a reference, which creates dependency on non‑statutory documents. (Requirement 2)\n\n- Incentives: operators can avoid replacement only by demonstrating (via records and label inspection) that installed parts fall outside the targeted manufacture dates. This creates a clear incentive either to verify compliance quickly or to pre-emptively replace suspect parts.\n\n**Concrete behaviour changes required**\n\n- Within 25 flight hours: review maintenance records and, if applicable, inspect identification labels per Raytheon SB. Record the results in the aircraft log book. (Requirement 1–2; Compliance 1–2)\n\n- Before next flight: replace any flap flex shaft manufactured between January 2000 and April 2001. (Requirement 3; Compliance 3)\n\n**References in the AD text**\n\n- Applicability: Beechcraft Model 56TC and A56TC (all serial numbers).\n- Requirement paragraphs 1–3 set out the review, inspection and replacement steps.\n- Compliance paragraphs set the time limits (25 flight hours for review/inspection; replacement before further flight).\n\n(Notes: the AD text states the directive is intended to correct an unsafe condition; the directive refers operators to Raytheon Service Bulletin 27-3478 and FAA AD 2001-23-10 for procedural and background information.)"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard, targeted Airworthiness Directive addressing a specific manufacturing defect in a specific component during a defined time period. The scope remains precisely limited to the identified unsafe condition in the flap flex shaft assemblies."},"complexity_factors":["Single, specific aircraft type and model range (Beechcraft 56TC/A56TC)","Only 3 defined actions in the Requirement section with clear conditional logic (if/then)","Simple date-based compliance windows (25 flight hours or before further flight)","No cross-references to other legislation (only a note about related FAA directive)","No nested exceptions or complex defined terms","Total length is approximately 300 words"],"plain_english_summary":"CASA has issued a safety order for Beechcraft Model 56TC and A56TC Turbo Barons requiring owners/operators/maintainers to check maintenance records for any left/right flap flex shaft or actuator replacements after 1 March 2000. If replaced, inspect the shaft label: units manufactured Jan 2000–Apr 2001 must be replaced before the next flight; others do not. The check/inspection had to be completed within 25 flight hours of 30 Jan 2002. The measure addresses a batch-related flap-shaft safety risk affecting takeoff/landing control."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-56-32-flap-flex-shaft-assembly","history":"/api/acts/ad-beech-56-32-flap-flex-shaft-assembly/history","analysis":"/api/acts/ad-beech-56-32-flap-flex-shaft-assembly/analysis","conflicts":"/api/acts/ad-beech-56-32-flap-flex-shaft-assembly/conflicts","importantCases":"/api/acts/ad-beech-56-32-flap-flex-shaft-assembly/important-cases","documents":"/api/acts/ad-beech-56-32-flap-flex-shaft-assembly/documents"}}