{"id":"F2006B03701","name":"AD/BEECH 200/46 Amdt 2 - Elevator Trim Tab System","slug":"ad-beech-200-46-amdt-2-elevator-trim-tab-system","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43291,"registerId":"commonwealth-F2006B03701-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 200/46 Amdt 2 - Elevator Trim Tab System","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 200/46\n\nAmdt 2\n\n  \nElevator Trim Tab System 13/88\n\nApplicability: All models listed in the Requirement Document.\n\nRequirement: a. Action in accordance with Beech SB 2028 R IV Parts I, II, III, IV, V, VI, VII, VIII as applicable.\n\nb. Verify the operation of the elevator trim system in accordance with the Interim Addendum to the FAA approved Flight Manual and Pilots Operating Handbook, (attached to the Requirement document).\n\nc. Action in accordance with Beech SB 2028 R IV Parts IV, V, VI as applicable.\n\nNote: FAA AD’s 86-20-03 and 87-04-24 refer.\n\nCompliance: a. Part I \\- Within 25 hours time in service after 20 November 1986.\n\nPart II \\- At the next scheduled inspection for Maintenance Release after 20 November 1986.\n\nPart III IV V VI as applicable prior to 15 May 1987.\n\nPart VIII \\- At the next scheduled inspection for Maintenance Release after 30 January 1989.\n\nb. Prior to each flight after compliance with Part I or Part II until modified.\n\nNote: This inspection may be accomplished by the pilot in command, in which case the precise A.D. reference shall be entered in a certification made on the Maintenance Release coincident with the Daily Inspection.\n\nc. Aircraft modified to Part III of SB 2028 R II; prior to 24 March 1987.\n\nBackground: The manufacturer reports cases of disengagement of the elevator trim cable from the cable drum. This has inhibited movement of the trim tab and increased elevator control forces excessively, thereby resulting in an unsafe condition. Amendment 1 references R III of the Requirement document. R III requires additional modification to prevent water in the cable drum from freezing and immobilizing the trim system. The compliance period for modification is extended. Those aircraft already modified to Part III require additional work due to an unsafe condition. Amendment 2 references Rev IV of the Requirement document which adds Part VIII, requiring additional work on trim actuator.","sortOrder":0}],"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"},"kimi_summary":{"content_quality":"ok","complexity_score":4,"scope_assessment":{"changed":true,"description":"The original AD addressed a single mechanical failure mode (cable disengagement from drum). Amendment 1 expanded scope to address water ingress and freezing. Amendment 2 further expanded scope to include trim actuator work (Part VIII). The directive evolved from a single-point cable fix to a comprehensive trim system overhaul covering cable routing, environmental protection, and actuator mechanics across three years of regulatory amendments."},"complexity_factors":["Multiple amendment layers (Amdt 2) with cumulative requirements from previous versions","Eight distinct parts (I-VIII) with different compliance deadlines and applicability","Cross-references to external documents: Beech SB 2028 R IV (eight parts), FAA ADs 86-20-03 and 87-04-24, and an Interim Addendum to the Flight Manual","Conditional logic: 'as applicable' appears three times, requiring operators to determine which parts apply to their specific aircraft configuration","Nested compliance structure: Part c only applies to 'Aircraft modified to Part III of SB 2028 R II' — a reference to an earlier revision of the same service bulletin","Dual compliance paths: pilot-conducted inspections allowed for item b, but with specific documentation requirements on the Maintenance Release"],"plain_english_summary":"This CASA Airworthiness Directive mandates inspections, pre-flight checks, and corrective modifications to the elevator trim cable/drum and actuator on Beechcraft 200 (Super King Air) aircraft after discovered cable slippage, water ingress/freezing, and actuator issues. It affects owners/operators and pilots, requires logbook records of pilot checks until repairs are done, and aims to prevent jammed trim and loss of pitch control."},"flash_summary":{"complexity_score":5,"scope_assessment":{"changed":true,"description":"Amendment 2 expands the required corrective work by referencing Revision IV of the Requirement document and adding Part VIII (additional trim‑actuator work), and it adjusts compliance timing and retrofit requirements for aircraft already modified under earlier revisions (Requirement: a; Background)."},"complexity_factors":["Multiple discrete actions split across Parts I–VIII of Beech SB 2028 R IV with different applicability (Requirement: a).","Staggered and date‑specific compliance deadlines (e.g. within 25 hours, next scheduled inspection, prior to 15 May 1987, prior to 24 March 1987) that require tracking by operators (Compliance: a, c).","Cross‑reference to an FAA‑approved Flight Manual interim addendum requiring verification steps and recurring pre‑flight checks until modification (Requirement: b; Compliance: b).","Permits the pilot in command to accomplish the recurring inspection but requires a precise AD reference entry on the Maintenance Release, creating mixed responsibility between pilots and maintenance organisations (Compliance: b Note).","Adds new hardware work on the trim actuator in Amendment 2 (Background: Amendment 2 references Rev IV adding Part VIII).","Aircraft already modified under earlier revisions require additional corrective work, creating retrofit and record‑keeping burdens (Background: aircraft modified to Part III require additional work; Compliance: c).","References external FAA ADs (86‑20‑03 and 87‑04‑24), implying cross‑jurisdictional coordination and reliance on external certification materials (Requirement Note).","Technical root causes (cable disengagement, water ingress/freezing) mean both mechanical modification and operational mitigations are mandated, increasing logistical and parts/maintenance complexity (Background)."],"plain_english_summary":"This directive requires inspections, verification and staged modifications to the elevator trim tab system on the listed Beechcraft 200 series aircraft by following Beech Service Bulletin 2028 R IV and an FAA flight‑manual interim addendum. \n\nOperators, maintenance organisations and pilots must verify trim operation and, until the modification is done, perform a pre‑flight check with the AD referenced on the maintenance release. The actions respond to reported cable disengagements and trim immobilisation that increase elevator control forces."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-200-46-amdt-2-elevator-trim-tab-system","history":"/api/acts/ad-beech-200-46-amdt-2-elevator-trim-tab-system/history","analysis":"/api/acts/ad-beech-200-46-amdt-2-elevator-trim-tab-system/analysis","conflicts":"/api/acts/ad-beech-200-46-amdt-2-elevator-trim-tab-system/conflicts","importantCases":"/api/acts/ad-beech-200-46-amdt-2-elevator-trim-tab-system/important-cases","documents":"/api/acts/ad-beech-200-46-amdt-2-elevator-trim-tab-system/documents"}}