{"id":"F2007L02181","name":"AD/BEECH 300/21 - Flight Control System","slug":"ad-beech-300-21-flight-control-system","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":67406,"registerId":"commonwealth-F2007L02181-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Beechcraft 300 Series Aeroplanes","sectionType":"division","heading":"Beechcraft 300 Series Aeroplanes","content":"### Beechcraft 300 Series Aeroplanes\n\n| AD/BEECH 300/21 | Flight Control System | 8/2007 |\n| --------------- | --------------------- | ------ |\n\n| Applicability: | Model B300 aircraft, serial numbers FL-379 through FL-423, FL-426, FL-428 through FL-450, and FL-452.Model B300C aircraft, serial number FM-11.                                                                                                                                                                                                                                                                                                                                                                                            |\n| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |\n| Requirement:   | Inspect the entire flight control system for improper assembly and damage, in accordance with Raytheon Aircraft Company Mandatory Service Bulletin (SB) No. SB 27-3761 Issued February 2006, or SB No. SB 27-3761 Revision 1, dated December 2006.If any improperly assembled or damaged flight controls are discovered as a result of the above inspection, before further flight, take corrective action as specified in SB No. SB 27-3761 original issue, or SB No. SB 27-3761 Revision 1.Note: FAA AD 2007-12-06 Amdt 39-15084 refers. |\n| Compliance:    | Unless already accomplished, within 100 hours time in service after 2 August 2007 or at the next annual inspection that occurs at least 30 days after 2 August 2007, whichever occurs first.                                                                                                                                                                                                                                                                                                                                               |\n|                | This Airworthiness Directive becomes effective on 2 August 2007.                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |\n| Background:    | The FAA received a report of inspections of several affected aircraft with improperly assembled or damaged flight controls. Unless detected and corrected, improperly assembled or damaged flight controls could result in a reduction in flight control capability and lead to loss of control of the aircraft.                                                                                                                                                                                                                           |\n\n![](image.001.png)  \nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n22 June 2007","sortOrder":0},{"sectionNumber":"AD/BEECH 300/21","sectionType":"part","heading":"AD/BEECH 300/21","content":"## AD/BEECH 300/21","sortOrder":1},{"sectionNumber":"Flight Control System","sectionType":"part","heading":"Flight Control System","content":"## Flight Control System","sortOrder":2},{"sectionNumber":"8/2007","sectionType":"part","heading":"8/2007","content":"## 8/2007","sortOrder":3}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"No change in scope is evident from the text. The directive confines obligations to the listed B300/B300C serial numbers and requires inspections and corrective action only as set out in Raytheon SB 27‑3761 (original or Revision 1); it does not broaden applicability or impose measures beyond the referenced service bulletin and stated compliance window."},"complexity_factors":["Technical inspection scope: mandates inspection of the entire flight control system, which is a detailed, safety‑critical task (Requirement).","Dependence on external normative document: corrective steps are prescribed by Raytheon Mandatory Service Bulletin SB 27‑3761 (original or Revision 1), creating reliance on manufacturer instructions (Requirement).","Narrow applicability: applies only to specific serial numbers of B300 and one B300C, requiring precise aircraft identification (Applicability).","Timing and operational constraint: compliance window set at 100 flight hours or the next annual inspection (≥30 days after 2 Aug 2007), which can affect scheduling of maintenance and operations (Compliance).","Immediate operational effect if defects found: any improperly assembled or damaged controls must be corrected before further flight, implying potential temporary grounding until fixed (Requirement).","Cross‑reference to FAA AD: notes FAA AD 2007‑12‑06, creating alignment with overseas regulatory findings and possible coordination of corrective actions (Requirement/Note).","Verification and liability exposure: inspectors/operators bear responsibility to detect assembly errors/damage and to apply manufacturer corrective action, increasing compliance and recordkeeping burdens (Requirement & Compliance)."],"plain_english_summary":"This Airworthiness Directive requires owners/operators of specified Beechcraft B300 and B300C serial numbers to inspect the entire flight control system and, if assembly errors or damage are found, correct them following Raytheon Service Bulletin SB 27‑3761 (original or Revision 1). Compliance must occur within 100 flight hours after 2 August 2007 or at the next annual inspection (at least 30 days after that date). The FAA reported improperly assembled or damaged controls that could reduce control capability and lead to loss of control."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard single-issue Airworthiness Directive addressing a specific safety defect in specific aircraft. It has not expanded beyond its original purpose of mandating inspections for flight control assembly issues."},"complexity_factors":["Single, specific requirement with clear alternative compliance documents (two versions of the same service bulletin)","Straightforward applicability limited to specific aircraft models and serial numbers","Simple compliance deadline with two alternative triggers (100 hours time-in-service or next annual inspection)","No defined terms section, no cross-references to other legislation beyond a note about the related FAA AD","Minimal conditional logic (only 'if improperly assembled or damaged' discovered, then corrective action required)"],"plain_english_summary":"This CASA Airworthiness Directive requires owners/operators of specified Beechcraft Model B300/B300C aircraft to inspect the entire flight control system per Raytheon Service Bulletin SB 27-3761 and correct any improper assembly or damage before further flight. The checks must be done promptly (within 100 flight hours or at the next annual inspection, whichever comes first). It addresses reported misassembly/damage that can seriously reduce control and risk a crash."},"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"}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-300-21-flight-control-system","history":"/api/acts/ad-beech-300-21-flight-control-system/history","analysis":"/api/acts/ad-beech-300-21-flight-control-system/analysis","conflicts":"/api/acts/ad-beech-300-21-flight-control-system/conflicts","importantCases":"/api/acts/ad-beech-300-21-flight-control-system/important-cases","documents":"/api/acts/ad-beech-300-21-flight-control-system/documents"}}