{"id":"F2006B05128","name":"AD/CESSNA 185/37 - Aileron Hinge Pin","slug":"ad-cessna-185-37-aileron-hinge-pin","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":45166,"registerId":"commonwealth-F2006B05128-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 185/37 - Aileron Hinge Pin","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)  \nCessna 185 Series Aeroplanes\n\nAD/CESSNA 185/37 Aileron Hinge Pin 1/84\n\n| Applicability: | Model | Serial Number                                                                                    |\n| -------------- | ----- | ------------------------------------------------------------------------------------------------ |\n|                | A185F | 18503684 thru 18504334, 18504336, 18504337, 18504339 thru18504395, 18504397, 18504398, 18504400. |\n\nRequirement: Action in accordance with Cessna S.I.L. SE 83-18.\n\nNote: FAA AD 83-22-06 refers.\n\nCompliance: Unless already accomplished within 100 hours time in service after 31 January 1984 or at the next scheduled inspection for Maintenance Release issue after 31 January 1984 whichever is the later.\n\nBackground: Possible migration and loss of the aileron hinge pin could result the retaining split pin holes are incorrectly located.","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a narrow, targeted safety directive addressing a specific manufacturing defect in a specific aircraft model. It has not expanded beyond its original purpose of ensuring aileron hinge pin integrity."},"complexity_factors":["Single, specific mechanical issue addressed","Only one model variant affected (Cessna 185F)","Clear applicability table with specific serial numbers","Single compliance action referenced to external document (Cessna S.I.L. SE 83-18)","Simple time-based compliance deadline with straightforward alternative","No nested exceptions or conditional logic","Minimal defined terms (only standard aviation terminology)"],"plain_english_summary":"This is an **Airworthiness Directive** — a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA). It requires owners and operators of specific Cessna 185F aircraft to inspect and fix a problem with the **aileron hinge pin** (a small metal rod that connects the aileron — the moving part on the wing that helps steer the plane — to the wing itself).\n\n**The problem:** The hinge pin could work its way out of position or fall out entirely because the holes for the retaining split pin (a small pin that keeps bigger pins in place) were drilled in the wrong spot during manufacturing.\n\n**Who must act:** Anyone who owns or operates a Cessna 185F with the listed serial numbers.\n\n**What they must do:** Follow the instructions in Cessna Service Information Letter SE 83-18.\n\n**When:** Within 100 hours of flying time after 31 January 1984, or at the next scheduled inspection for the aircraft's Maintenance Release (a certificate showing the plane is safe to fly) — whichever comes later.\n\n**Why it matters:** If the hinge pin falls out, the pilot could lose control of the aileron, making the aircraft difficult or impossible to steer. This could cause a crash."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive's scope is confined to specific Cessna A185F serial numbers and mandates the actions set out in Cessna S.I.L. SE 83-18. The text does not expand the affected fleet or the nature of the required action beyond those references; there is no indication in the provided instrument that the scope has been altered from its stated applicability and requirements."},"complexity_factors":["Narrow applicability limited to a single model (A185F) and specific serial number ranges (\"Applicability\").","Directive delegates technical detail to an external manufacturer document (Cessna S.I.L. SE 83-18), so the AD itself is short but requires cross-referencing (\"Requirement\").","Clear, single compliance window with straightforward time-in-service and inspection-triggered options (\"Compliance\").","No alternative compliance routes or complex certification pathways specified; enforcement and consequence mechanics are standard for an AD (implicit in structure).","Reference to related FAA AD (\"Note\") adds cross-jurisdictional context but does not complicate the mandated action."],"plain_english_summary":"This directive requires owners/operators of specified Cessna A185F serial numbers to carry out the inspection and any corrective work described in Cessna Service Information Letter SE 83-18 to ensure aileron hinge pins and their retention cannot migrate or be lost. \n\nAffected operators and maintenance organisations must fund and schedule the work within the compliance window (by 100 hours TIS after 31 Jan 1984 or at the next Maintenance Release inspection after that date)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-185-37-aileron-hinge-pin","history":"/api/acts/ad-cessna-185-37-aileron-hinge-pin/history","analysis":"/api/acts/ad-cessna-185-37-aileron-hinge-pin/analysis","conflicts":"/api/acts/ad-cessna-185-37-aileron-hinge-pin/conflicts","importantCases":"/api/acts/ad-cessna-185-37-aileron-hinge-pin/important-cases","documents":"/api/acts/ad-cessna-185-37-aileron-hinge-pin/documents"}}