{"id":"F2006B02136","name":"AD/AC/76 - Engine Control Cables, Jam Nuts - Modification","slug":"ad-ac-76-engine-control-cables-jam-nuts-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41366,"registerId":"commonwealth-F2006B02136-current","compilationNumber":null,"startDate":"2026-04-01","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/AC/76 - Engine Control Cables, Jam Nuts - Modification","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-description: CASA Airworthiness Directive\nmeta-generator: Aspose.Words for .NET 22.10.0\nmeta-keywords: Issue 5/1982,Aircraft below 5700 kg,Twin Commander (Gulfstream/Rockwell/ Aerocommander 500, 600 and 700) Series Aeroplanes,Engine Control Cables, Jam Nuts - Modification,76\ntitle: Airworthiness Directive - AD/AC/76 - Engine Control Cables, Jam Nuts - Modification\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)  Twin Commander (Gulfstream/Rockwell/ Aerocommander 500, 600 and 700) Series Aeroplanes\n\n \n\nAD/AC/76 Engine Control Cables, Jam Nuts - Modification 5/82\n\nApplicability: All models 690, 690A & 690B with S/Nos. 11001 to 11566; All models 690C with S/Nos. 11600 to 11719;\n\nAll models 695 with S/Nos. 95000 to 95084 and All models 695A with S/Nos. 96001 to 96025.\n\nDocument: Gulfstream American Commander Division SB No. 188.\n\n \n\nCompliance: Unless already accomplished within 100 hours’ time in service after 31 May 1982. Background:               The engine control cable jam nuts may loosen in service.\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":1384},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This Airworthiness Directive maintains its original targeted scope. It addresses a specific mechanical defect (loosening jam nuts) in defined aircraft models and has not expanded beyond this original aviation safety purpose."},"complexity_factors":["Extremely short document (under 200 words)","Narrow applicability limited to 6 specific aircraft models with defined serial number ranges","Single, clear compliance condition ('unless already accomplished')","No cross-references to other legislation or regulations","Plain language background with no nested exceptions or conditional clauses"],"plain_english_summary":"**What this means for aircraft owners**\n\nThis safety rule applies if you own specific Twin Commander aircraft models (the 690 and 695 series with particular serial numbers listed in the directive).\n\n**What you must do**\nYou must modify the engine control cables by following Gulfstream Service Bulletin No. 188. This fixes a design flaw where the \"jam nuts\" (locking nuts that prevent bolts from vibrating loose) on the engine throttle or control cables can work free during flight.\n\n**Deadline**\nComplete the modification within 100 hours of flight time after 31 May 1982, unless you have already done it.\n\n**Why this matters**\nLoose jam nuts can cause partial or complete loss of engine control — a serious flight safety hazard. This is a mandatory fix, not optional. You need to keep records proving the work was done."}},"importantCases":[],"_links":{"self":"/api/acts/ad-ac-76-engine-control-cables-jam-nuts-modification","history":"/api/acts/ad-ac-76-engine-control-cables-jam-nuts-modification/history","analysis":"/api/acts/ad-ac-76-engine-control-cables-jam-nuts-modification/analysis","conflicts":"/api/acts/ad-ac-76-engine-control-cables-jam-nuts-modification/conflicts","importantCases":"/api/acts/ad-ac-76-engine-control-cables-jam-nuts-modification/important-cases","documents":"/api/acts/ad-ac-76-engine-control-cables-jam-nuts-modification/documents"}}