{"id":"F2006B03731","name":"AD/BEECH 23/13 - Main and Nose Landing Gear Shock Absorber","slug":"ad-beech-23-13-main-and-nose-landing-gear-shock-absorber","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43323,"registerId":"commonwealth-F2006B03731-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 23/13 - Main and Nose Landing Gear Shock Absorber","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 19, 23 and 24 Series Aeroplanes\n\nAD/BEECH 23/13 Main and Nose Landing Gear Shock Absorber 1/68\n\nApplicability: All models in excess of 400 hours time in service.\n\nRequirement: 1. Remove the MS9048-180 roll pin retaining the end fittings on shock absorber rods P/N 169-810000-17 and \\-61 and inspect for ovality of pin holes, wear and cracking of the roll pins and relative movement between the mating parts.\n\n2. Inspect the shock absorber rods P/N 169-810000-17 and -61 for wear where the rods pass through the seating face of the landing gear housing. Any parts which have broken anodic films in this area shall be replaced with serviceable parts.\n\nNote: Particular attention must be paid on reassembly to the 0.20 + 06 inch compression of the rubber discs required by the Beechcraft Model 23 Shop Manual.\n\nCompliance: Within 50 hours time in service after 10 January 1968 and thereafter at intervals not exceeding 500 hours time in service.","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2424},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This directive maintains its original targeted scope: a specific safety inspection for landing gear shock absorbers on defined Beechcraft models. No evidence of scope expansion beyond the original airworthiness safety concern."},"complexity_factors":["Specific manufacturer part numbers requiring technical knowledge (MS9048-180, P/N 169-810000-17)","Precise dimensional tolerances (0.20 + 06 inch compression specification)","Cross-reference to external technical manual (Beechcraft Model 23 Shop Manual)","Multiple time-in-service thresholds (400-hour applicability trigger, 50-hour compliance window, 500-hour recurring intervals)"],"plain_english_summary":"This mandatory Airworthiness Directive requires owners/operators of Beechcraft 19, 23, and 24 series aircraft with over 400 flight hours to inspect landing-gear shock absorbers. It directs removal and inspection of the retaining roll pins for wear or ovalized holes, inspection of shock-absorber rods for wear and broken anodic film (replace if unserviceable), and specified rubber-disc compression on reassembly. First inspection is within 50 flight hours after 10 Jan 1968, then every 500 hours."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-23-13-main-and-nose-landing-gear-shock-absorber","history":"/api/acts/ad-beech-23-13-main-and-nose-landing-gear-shock-absorber/history","analysis":"/api/acts/ad-beech-23-13-main-and-nose-landing-gear-shock-absorber/analysis","conflicts":"/api/acts/ad-beech-23-13-main-and-nose-landing-gear-shock-absorber/conflicts","importantCases":"/api/acts/ad-beech-23-13-main-and-nose-landing-gear-shock-absorber/important-cases","documents":"/api/acts/ad-beech-23-13-main-and-nose-landing-gear-shock-absorber/documents"}}