{"id":"F2006B03626","name":"AD/BEECH 18/8 - Undercarriage Limit Switch - Inspection","slug":"ad-beech-18-8-undercarriage-limit-switch-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43216,"registerId":"commonwealth-F2006B03626-current","compilationNumber":null,"startDate":"2026-04-01","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 18/8 - Undercarriage Limit Switch - Inspection","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 18 Series Aeroplanes\n\nAD/BEECH 18/8 Undercarriage Limit Switch \\- Inspection NK\n\nApplicability: Model C-18S and AT-11.\n\nRequirement: 1. Raise the aeroplane slowly and evenly on jacks and inspect and if necessary adjust the non-retract limit switch on the port undercarriage leg to ensure that the switch will be operated by the oleo leg when the oleo leg is at a distance of not less than one half inch and not more than three-quarters of an inch from the fully extended position. To ensure smooth extension of the strut, any sticking of the strut should be relieved by gently tapping the fork.\n\n2. If during the above inspection it has been necessary to relieve sticking of the strut, on completion of the inspection and any adjustment, raise the aeroplane again to ensure that the oleo leg will operate the switch without action being taken to relieve sticking of the strut.\n\n3. ANO 105.1.4.3.6.8.\n\nCompliance: (a) At intervals not exceeding 100 hours time in service; and\n\n(b) After any work or adjustments, except normal additions of oil and air, have been performed on the switch or undercarriage.\n\nFederal Register of Legislative Instruments F2006B03626","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1899},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This airworthiness directive maintains its original narrow scope focused solely on the undercarriage limit switch inspection requirement for specific Beechcraft 18 series models. No expansion of applicability or substantive additional requirements beyond the initial safety-critical inspection protocol."},"complexity_factors":["Precise technical measurement tolerances (0.5 to 0.75 inches)","Aviation-specific terminology (oleo leg, limit switch, port undercarriage, jacking procedures)","Dual compliance triggers (time-based intervals and event-based maintenance)","Single cross-reference to underlying Civil Aviation Orders (ANO 105.1.4.3.6.8)"],"plain_english_summary":"A rule requiring regular inspection and testing of the non-retract limit switch on the left landing gear of Beechcraft Model C-18S and AT-11 Twin Beeches to ensure the wheels cannot retract while the aircraft is on the ground.  \n\nIt affects owners/operators and maintenance personnel and is meant to prevent gear collapse during parking/taxiing that could cause injury or damage."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-18-8-undercarriage-limit-switch-inspection","history":"/api/acts/ad-beech-18-8-undercarriage-limit-switch-inspection/history","analysis":"/api/acts/ad-beech-18-8-undercarriage-limit-switch-inspection/analysis","conflicts":"/api/acts/ad-beech-18-8-undercarriage-limit-switch-inspection/conflicts","importantCases":"/api/acts/ad-beech-18-8-undercarriage-limit-switch-inspection/important-cases","documents":"/api/acts/ad-beech-18-8-undercarriage-limit-switch-inspection/documents"}}