{"id":"F2006B03891","name":"AD/BEECH 36/36 Amdt 1 - Rudder Forward Spar","slug":"ad-beech-36-36-amdt-1-rudder-forward-spar","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43500,"registerId":"commonwealth-F2006B03891-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 36/36 Amdt 1 - Rudder Forward Spar","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 36 (Bonanza) Series Aeroplanes\n\nAD/BEECH 36/36\n\nAmdt 1\n\n  \nRudder Forward Spar 5/98\n\nApplicability: Models Serial Numbers\n\n36, A36 E-1 through E-2518\n\nA36TC, B36TC EA-1 through EA-500\n\nRequirement: 1. Inspect the rudder forward spar in accordance with Beech Service Bulletin SB 2333 Revision 1 dated Nov 1991.\n\nNote: FAA AD 93-24-03 Amendment 39-8752 refers.\n\nCompliance: 1. Before exceeding 1000 hrs component TIS or 100 hrs TIS after 1 Nov 1990, whichever occurs later and thereafter at intervals not to exceed 500 hrs TIS.\n\nThe following are considered terminating actions for this Directive:\n\n    Installation of repair kit 33-6001-1S in accordance with the Beech SB 2333 Revision 1;\n\n    b. Replacement of the rudder assembly with the applicable part number in accordance with Beech SB2333 Revision 1;\n\n    c. Installation of rudder spar reinforcements in accordance with FAA STC SA4899NM; and,\n\n    d. Installation of rudder spar reinforcements in accordance with FAA STC SA00044LA.\n\nThis amendment becomes effective on 23 April 1998.\n\nBackground: This AD was raised as a result of eight reports of cracks at the hinge bracket attachments in the rudder forward spar. The cause is fatigue initiating at holes drilled to install nut plates. Failure to correct this condition may result in loss of aircraft control. This amendment calls up the latest FAA AD information and highlights the presence of other terminating action.\n\nThe original issue of this airworthiness directive became effective in August 1990.","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"This amendment updates the AD by calling up Beech SB 2333 Revision 1 and referencing FAA AD 93-24-03, and by explicitly listing additional terminating actions (repair kit, rudder replacement, and two FAA STCs SA4899NM and SA00044LA). The affected models/serial ranges remain the same but the acceptable compliance paths and the referenced technical material have been expanded/clarified. (Requirement; Note; Background)"},"complexity_factors":["Technical inspection requirement for fatigue cracks at hinge bracket attachments; requires conforming to Beech SB 2333 Revision 1 (Requirement; Background).","Multiple alternative terminating actions accepted (repair kit 33-6001-1S, rudder replacement, or installation of FAA STCs SA4899NM or SA00044LA), which creates choices for compliance paths (Requirement).","Time-based compliance trigger with layered thresholds: before exceeding 1000 hrs component TIS or 100 hrs TIS after 1 Nov 1990, whichever is later, then recurring at ≤500 hrs TIS—adds scheduling and record-keeping complexity (Compliance).","Applicability specified by model and serial number ranges, requiring operators to confirm affected airframes precisely (Applicability).","Cross-reference to FAA AD 93-24-03 and need to follow a particular service bulletin revision tie compliance to externally issued technical material (Note; Background)."],"plain_english_summary":"Requires owners/operators of specified Beechcraft 36/A36/B36TC aeroplanes to inspect the rudder forward spar for cracks using Beech Service Bulletin SB 2333 Revision 1, on a set schedule and until a listed terminating action is done. The directive responds to fatigue cracks at nut‑plate holes that could lead to loss of control. Owners pay for inspections and any repair, replacement or STC installations that end the inspection requirement. (Requirement; Compliance; Background)"},"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is an amendment to an existing Airworthiness Directive (AD/BEECH 36/36). The amendment updates the directive to reference the latest FAA information and clarifies available terminating actions, but does not expand beyond the original scope of addressing rudder forward spar fatigue cracks in specific Beechcraft 36 series aircraft."},"complexity_factors":["Single, specific mechanical component addressed (rudder forward spar)","Only 4 specific aircraft models affected with defined serial number ranges","Clear compliance timeline with simple 'whichever occurs later' condition","Four terminating actions clearly listed as alternatives to ongoing inspections","No nested definitions or extensive cross-referencing to other legislation","Short document (approximately 250 words) with single purpose"],"plain_english_summary":"This is a safety notice (called an Airworthiness Directive) for owners and operators of specific Beechcraft Bonanza aeroplanes. It requires regular inspections of a part called the 'rudder forward spar' — a structural component that helps control the plane's direction. The directive was issued because cracks were found in this part due to metal fatigue, which could cause pilots to lose control of the aircraft. Owners must inspect this part before the plane reaches 1,000 flight hours, or within 100 hours of November 1990, whichever comes later, and then every 500 flight hours after that. Alternatively, they can permanently fix the problem by installing specific repair kits or replacement parts listed in the document."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-36-36-amdt-1-rudder-forward-spar","history":"/api/acts/ad-beech-36-36-amdt-1-rudder-forward-spar/history","analysis":"/api/acts/ad-beech-36-36-amdt-1-rudder-forward-spar/analysis","conflicts":"/api/acts/ad-beech-36-36-amdt-1-rudder-forward-spar/conflicts","importantCases":"/api/acts/ad-beech-36-36-amdt-1-rudder-forward-spar/important-cases","documents":"/api/acts/ad-beech-36-36-amdt-1-rudder-forward-spar/documents"}}