{"id":"F2006B04967","name":"AD/CESSNA 170/35 - Flying Control System Turnbuckles","slug":"ad-cessna-170-35-flying-control-system-turnbuckles","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":44847,"registerId":"commonwealth-F2006B04967-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 170/35 - Flying Control System Turnbuckles","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)  Cessna 170, 172, F172, FR172 and 175 Series Aeroplanes\n\n \n\nAD/CESSNA 170/35 Flying Control System Turnbuckles 4/80\n\nApplicability:  All models 172, 172RG, F172, R172 & FR172 with S/Nos 17268484 to 17273184, 172RG0001 to 172RG0013, F17201551 to F17201868, F17201890 to F17201901, R17202232 to R17203238, FR17200596 to FR17200655.\n\n \n\nRequirement:  Action in accordance with Cessna SIL No SE80-16. Compliance:   Within 100 hours time in service after 30 April 1980.\n\nBackground:  Some of the AN 155 brass turnbuckles used in the control system may have longitudinal cracks radiating from the turnbuckle end.\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\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":2592},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This directive remains tightly scoped to its original purpose: addressing a specific manufacturing defect in AN 155 brass turnbuckles. There is no evidence of scope expansion beyond the identified safety-critical hardware issue."},"complexity_factors":["Very short, single-issue directive with only four operative sections","Requires cross-reference to an external technical document (Cessna SIL No SE80-16) not reproduced in the text","Applicability depends on checking specific aircraft serial numbers against six separate numerical ranges"],"plain_english_summary":"This directive requires owners/operators of certain Cessna 172-series aircraft (specific serial numbers listed) to inspect or replace potentially defective brass turnbuckles (AN 155) in flying control cable systems. \n\nFollowing Cessna Service Information Letter SE80‑16, the inspection/replacement must be done within 100 flight hours after 30 April 1980 because longitudinal cracking in these turnbuckles can lead to in‑flight failure and loss of control."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-170-35-flying-control-system-turnbuckles","history":"/api/acts/ad-cessna-170-35-flying-control-system-turnbuckles/history","analysis":"/api/acts/ad-cessna-170-35-flying-control-system-turnbuckles/analysis","conflicts":"/api/acts/ad-cessna-170-35-flying-control-system-turnbuckles/conflicts","importantCases":"/api/acts/ad-cessna-170-35-flying-control-system-turnbuckles/important-cases","documents":"/api/acts/ad-cessna-170-35-flying-control-system-turnbuckles/documents"}}