{"id":"F2006B09454","name":"AD/EMB-110/14 - Vertical Stabiliser, Rudder Central Hinge Fitting - Modification","slug":"ad-emb-110-14-vertical-stabiliser-rudder-central-hinge-fitting-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":53903,"registerId":"commonwealth-F2006B09454-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/EMB-110/14 - Vertical Stabiliser, Rudder Central Hinge Fitting - Modification","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)  Embraer EMB-110 (Bandeirante) Series Aeroplanes\n\n \n\nAD/EMB-110/14 Vertical Stabiliser, Rudder Central\n\nHinge Fitting - Modification\n\n\n9/81\n\n \n\nApplicability: All models EMB-110 with S/Nos. 110001 to 110141, 110143 to 110146, 110148 and\n\n110149.\n\n \n\nRequirement: Embraer SB No. 110-55-009.\n\n \n\nCompliance: Unless already accomplished, within 250 hours time in service 30 September 1981.\n\n \n\nBackground:  The manufacturer advises that water may collect in the rudder central hinge fitting and cause corrosion of that component.\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":1970},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This directive has remained narrowly focused on the rudder central hinge fitting modification for the specified EMB-110 aircraft serial numbers since its original issuance. There is no evidence of scope expansion beyond the original safety purpose of preventing corrosion in this specific component."},"complexity_factors":["Single, specific mechanical modification required","Applicability limited to clearly defined serial number ranges","Straightforward compliance deadline (calendar date or flight hours)","Reference to only one external technical document (Embraer Service Bulletin)","No exceptions, exemptions, or conditional provisions"],"plain_english_summary":"**What this does:** This safety directive requires owners and operators of specific Embraer EMB-110 Bandeirante aircraft to modify the rudder hinge fitting on the tail (vertical stabiliser) to prevent dangerous corrosion.\n\n**Who it affects:** Only applies to aircraft with serial numbers 110001 to 110141, 110143 to 110146, 110148, and 110149.\n\n**What must be done:** Operators must carry out the modification described in Embraer Service Bulletin No. 110-55-009. This changes how the central hinge fitting of the rudder is constructed or sealed to stop water from pooling inside it.\n\n**Why it matters:** Water collecting in the rudder hinge fitting can cause corrosion (rust), which could weaken the tail structure and potentially lead to loss of control of the aircraft.\n\n**When:** The work had to be completed by 30 September 1981, or within 250 hours of flight time after this directive was issued (whichever came first), unless already done."}},"importantCases":[],"_links":{"self":"/api/acts/ad-emb-110-14-vertical-stabiliser-rudder-central-hinge-fitting-modification","history":"/api/acts/ad-emb-110-14-vertical-stabiliser-rudder-central-hinge-fitting-modification/history","analysis":"/api/acts/ad-emb-110-14-vertical-stabiliser-rudder-central-hinge-fitting-modification/analysis","conflicts":"/api/acts/ad-emb-110-14-vertical-stabiliser-rudder-central-hinge-fitting-modification/conflicts","importantCases":"/api/acts/ad-emb-110-14-vertical-stabiliser-rudder-central-hinge-fitting-modification/important-cases","documents":"/api/acts/ad-emb-110-14-vertical-stabiliser-rudder-central-hinge-fitting-modification/documents"}}