{"id":"F2006B04226","name":"AD/BEECH 90/35 - Flap Gearbox - Inspection of Gears","slug":"ad-beech-90-35-flap-gearbox-inspection-of-gears","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43984,"registerId":"commonwealth-F2006B04226-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 90/35 - Flap Gearbox - Inspection of Gears","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-generator: Aspose.Words for .NET 22.10.0\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Beechcraft 90 and 65-90 (King Air) Series Aeroplanes\n\n \n\nAD/BEECH 90/35 Flap Gearbox - Inspection of Gears 1/75\n\nApplicability: Model C90 with S/Nos. LJ-527 to LJ-640. Model E90 with S/Nos. LW-1 to LW-116. Plus any of the following models that have installed Beechcraft Kit No. 99-4017S or Kit No. 99-4017-1S:- Models 65-90, B90 & C90 with S/Nos. LJ-1 to LJ-526.\n\n \n\nDocument: Beechcraft SI No. 0689-160.\n\n \n\nCompliance: Within 100 hours’ time in service after 31 January 1975.\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1879},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive maintains its original, narrow scope as a specific airworthiness inspection requirement for flap gearbox gears on designated Beechcraft aircraft. It has not expanded beyond this single mechanical safety concern."},"complexity_factors":["Single operative provision (one inspection requirement)","Narrow applicability limited to specific aircraft models and serial number ranges","Incorporation by reference of external technical document (Beechcraft Service Instruction No. 0689-160)","Simple temporal compliance trigger (hours of flight time after specific date)","No defined terms section, exceptions, or conditional clauses"],"plain_english_summary":"This directive mandates a **mandatory safety inspection** for specific Beechcraft King Air aircraft. **What it requires:** Owners or operators must inspect the flap gearbox gears—the mechanical components that control the wing flaps (moveable surfaces that help aircraft take off and land safely)—on certain aircraft models. **Who it affects:** This applies only to:\n- **Model C90** with serial numbers LJ-527 to LJ-640\n- **Model E90** with serial numbers LW-1 to LW-116  \n- **Models 65-90, B90, and C90** with serial numbers LJ-1 to LJ-526, but **only if** modified with Beechcraft Kit No. 99-4017S or 99-4017-1S\n\n**Compliance requirement:** The inspection must be carried out within 100 hours of flight time after 31 January 1975, following the procedures in Beechcraft Service Instruction No. 0689-160."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-90-35-flap-gearbox-inspection-of-gears","history":"/api/acts/ad-beech-90-35-flap-gearbox-inspection-of-gears/history","analysis":"/api/acts/ad-beech-90-35-flap-gearbox-inspection-of-gears/analysis","conflicts":"/api/acts/ad-beech-90-35-flap-gearbox-inspection-of-gears/conflicts","importantCases":"/api/acts/ad-beech-90-35-flap-gearbox-inspection-of-gears/important-cases","documents":"/api/acts/ad-beech-90-35-flap-gearbox-inspection-of-gears/documents"}}