{"id":"F2006B02062","name":"AD/AA-5/4 - Aileron - Additional Drain Holes","slug":"ad-aa-5-4-aileron-additional-drain-holes","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41286,"registerId":"commonwealth-F2006B02062-current","compilationNumber":null,"startDate":"2026-04-01","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/AA-5/4 - Aileron - Additional Drain Holes","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 NK,Aircraft below 5700 kg,Gulfstream (Grumman American/ American Aviation) AA-5 Series Aeroplanes,Aileron - Additional Drain Holes,4\ntitle: Airworthiness Directive - AD/AA-5/4 - Aileron - Additional Drain Holes\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)  Gulfstream (Grumman American/ American Aviation) AA-5 Series Aeroplanes\n\n \n\nAD/AA-5/4 Aileron - Additional Drain Holes NK\n\nApplicability: All models.\n\n \n\nDocument: American Aviation SB No. 132.\n\n \n\nCompliance: Within 100 hours’ time in service after 30 November 1972.\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\n \n\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1842},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"The directive remains a targeted technical safety requirement for a specific aircraft control surface, consistent with its original purpose of preventing water ingress and corrosion in ailerons."},"complexity_factors":["Single, unambiguous compliance requirement (drill drain holes)","No defined terms or interpretation section","No cross-references to other legislative instruments","Narrow applicability limited to one specific aircraft series","Straightforward compliance calculation (100 hours after fixed date)"],"plain_english_summary":"This **Airworthiness Directive** mandates a safety modification for **Gulfstream/Grumman American AA-5 series light aircraft** (including the Traveler, Cheetah, and Tiger models).\n\n**What it requires:** Owners must drill additional drain holes in the **aileron** (the hinged control surface on the trailing edge of the wing) to prevent water accumulation inside the structure.\n\n**Why it matters:** Trapped water can cause corrosion (rust) or freeze at altitude, potentially jamming the flight controls and creating a serious safety hazard.\n\n**How to comply:** Follow the technical instructions in **American Aviation Service Bulletin No. 132**. The modification must be completed within 100 hours of flight time after 30 November 1972.\n\n**Who is affected:** All owners and operators of AA-5 series aircraft registered in Australia."}},"importantCases":[],"_links":{"self":"/api/acts/ad-aa-5-4-aileron-additional-drain-holes","history":"/api/acts/ad-aa-5-4-aileron-additional-drain-holes/history","analysis":"/api/acts/ad-aa-5-4-aileron-additional-drain-holes/analysis","conflicts":"/api/acts/ad-aa-5-4-aileron-additional-drain-holes/conflicts","importantCases":"/api/acts/ad-aa-5-4-aileron-additional-drain-holes/important-cases","documents":"/api/acts/ad-aa-5-4-aileron-additional-drain-holes/documents"}}