{"id":"F2006B04936","name":"AD/CESSNA 150/38 - Aileron Hinge Pin","slug":"ad-cessna-150-38-aileron-hinge-pin","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":44781,"registerId":"commonwealth-F2006B04936-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 150/38 - 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 150, F150, 152 & F152 Series Aeroplanes\n\nAD/CESSNA 150/38 Aileron Hinge Pin 1/84\n\n| Applicability: | Model | Serial Number                                                                                                                                                                                                                                                                                                                                                                                                                                       |\n| -------------- | ----- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|                | 152   | 15282032 thru 15284659, 15284661 thru 15284684, 15284686 thru15284851, 15284853 thru 15285417, 15285419 thru 15285621, 15285623thru 15285625, 15285627 thru 15285651, 15285653 thru 15285681,15285683, 15385685 thru 15285693, 15285695 thru 15285700, 15285702thru 15285713, 15285716 thru 15285719, 15285722 thru 15285724,15285726 thru 15285728, 15285730 thru 15285731, 15285733 thru15285744, 15285748, 15285750, 15285751, 1528575 15285756, |\n|                |       | 15285757, 15285759, 15285760, 1528576 15285765, 15285767,                                                                                                                                                                                                                                                                                                                                                                                           |\n|                |       | 15285769, 15285772, 1528577, 15285778, 15285779, 15285781,                                                                                                                                                                                                                                                                                                                                                                                          |\n|                |       | 15285783                                                                                                                                                                                                                                                                                                                                                                                                                                            |\n|                | A152  | A1520809 thru A1520990, A1520992 thru A1520997, A1520999 thru A1521020, A1521022                                                                                                                                                                                                                                                                                                                                                                    |\n|                | F152  | F15201529 thru F15201883, F15201885 thru F15201896, F15201898 thru F15201931, F15201933 F15201935, F15201936                                                                                                                                                                                                                                                                                                                                        |\n|                | FA152 | FA1520348 thru FA1520382.                                                                                                                                                                                                                                                                                                                                                                                                                           |\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 if the retaining split pin holes are incorrectly located.","sortOrder":0}],"analysis":{"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"},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The directive imposes corrective action for the specifically listed serial-numbered aircraft as set out in the service instruction; it does not indicate an expansion or narrowing of scope beyond those listed. The obligation is to perform the action per Cessna S.I.L. SE 83-18 within the stated compliance window."},"complexity_factors":["Detailed, serial-numbered applicability list increases administrative effort to determine whether an individual aircraft is affected (Applicability).","Mandate to follow an external document (Cessna S.I.L. SE 83-18) means compliance requires consulting and implementing vendor instructions (Requirement).","Conditional compliance timing — 'within 100 hours TIS after 31 Jan 1984 or at the next scheduled inspection for Maintenance Release after 31 Jan 1984 whichever is the later' — adds scheduling complexity for operators (Compliance).","Reference to FAA AD 83-22-06 indicates cross-jurisdictional alignment and possible need to reconcile multiple directives (Note).","Technical root cause (mislocated split-pin holes leading to hinge-pin migration) requires physical inspection/possible modification, creating labor and parts costs for owners/operators (Background)."],"plain_english_summary":"This airworthiness directive requires owners/operators of specified Cessna 150/152-series aircraft (listed by serial number) to carry out the corrective action set out in Cessna Service Instruction Letter SE 83-18. Compliance must occur within 100 hours time-in-service after 31 January 1984 or at the next scheduled maintenance-release inspection after that date, whichever is later. The measure addresses a risk that improperly located aileron hinge-pin retaining split‑pin holes could allow pin migration or loss."},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This Airworthiness Directive maintains its original narrow scope: addressing a specific manufacturing defect in aileron hinge pins on particular Cessna aircraft models. There is no evidence of scope creep; it remains a targeted safety intervention for a defined mechanical issue."},"complexity_factors":["Single, specific technical requirement referencing an external document (Cessna S.I.L. SE 83-18)","Straightforward applicability table with serial number ranges, though formatting is messy with apparent OCR errors (e.g., '1528575 15285756' suggesting missing comma or digit)","Simple conditional compliance deadline: 100 hours time-in-service OR next scheduled inspection, whichever is later","No nested exceptions or complex defined terms","Short document (approximately 200 words) with single purpose","Cross-reference to one FAA AD (83-22-06) for additional context"],"plain_english_summary":"Owners/operators of certain Cessna 150/152 variants must inspect and correct a misdrilled aileron hinge-pin retaining hole that can allow the hinge pin to migrate or fall out. Compliance requires following Cessna Service Information Letter SE 83-18 within 100 flight hours after 31 Jan 1984 or at the next Maintenance Release. This mandatory AD affects specific serial-numbered aircraft and matters because a loose hinge pin can cause loss of roll control and risk a crash."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-150-38-aileron-hinge-pin","history":"/api/acts/ad-cessna-150-38-aileron-hinge-pin/history","analysis":"/api/acts/ad-cessna-150-38-aileron-hinge-pin/analysis","conflicts":"/api/acts/ad-cessna-150-38-aileron-hinge-pin/conflicts","importantCases":"/api/acts/ad-cessna-150-38-aileron-hinge-pin/important-cases","documents":"/api/acts/ad-cessna-150-38-aileron-hinge-pin/documents"}}