{"id":"F2009L01938","name":"AD/AA-5/4 - Aileron - Additional Drain Holes - CANCELLED","slug":"ad-aa-5-4-aileron-additional-drain-holes-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":79070,"registerId":"commonwealth-F2009L01938-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Gulfstream (Grumman American/ American A","sectionType":"division","heading":"Gulfstream (Grumman American/ American Aviation) AA-5 Series Aeroplanes","content":"### Gulfstream (Grumman American/ American Aviation) AA-5 Series Aeroplanes\n\n| AD/AA-5/4 | Aileron - Additional Drain Holes | 6/2009 |\n| --------- | -------------------------------- | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                                                                                     |\n| ------------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 4 June 2009.                                                                                                                                                                                                                                                                           |\n| Background:  | This AD, issued in 1972, required modification of the ailerons in accordance with American Aviation SB No. 132 by incorporating additional drain holes. The AD compliance was within 100 hours time in service after 30 November 1972. As all aircraft would have been modified, the AD is no longer required. |\n\n![](image.001.png)\n\nJames Coyne  \nDelegate of the Civil Aviation Safety Authority\n\n24 April 2009","sortOrder":0},{"sectionNumber":"AD/AA-5/4","sectionType":"part","heading":"AD/AA-5/4","content":"## AD/AA-5/4","sortOrder":1},{"sectionNumber":"Aileron - Additional Drain Holes","sectionType":"part","heading":"Aileron - Additional Drain Holes","content":"## Aileron - Additional Drain Holes","sortOrder":2},{"sectionNumber":"6/2009","sectionType":"part","heading":"6/2009","content":"## 6/2009","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2433},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This instrument terminates the previous airworthiness directive rather than expanding its scope. The original purpose was to mandate safety modifications; this document simply ends that mandate once universal compliance was achieved across the aircraft fleet."},"complexity_factors":["Single operative provision cancelling one previous directive","No defined terms or interpretation section","No conditional logic, exceptions, or cross-references to other legislation","Extremely short substantive content (approximately 100 words)","Straightforward declarative cancellation with no procedural requirements"],"plain_english_summary":"**What this does:** This document cancels an old aviation safety rule (an Airworthiness Directive) that required owners of specific light aircraft to drill extra holes in their wing ailerons.\n\n**Who it affects:** Owners and maintainers of Gulfstream AA-5 series aeroplanes (also sold under the names Grumman American or American Aviation).\n\n**Background:** The original 1972 rule required adding drainage holes to the ailerons to prevent water buildup inside the wing control surfaces. Aircraft operators had to complete this modification within 100 hours of flight time after November 1972.\n\n**Why it matters:** Since all affected aircraft should have been modified decades ago, the Civil Aviation Safety Authority has cancelled the rule as obsolete. This removes an outdated compliance burden, though the physical modifications remain on the aircraft."}},"importantCases":[],"_links":{"self":"/api/acts/ad-aa-5-4-aileron-additional-drain-holes-cancelled","history":"/api/acts/ad-aa-5-4-aileron-additional-drain-holes-cancelled/history","analysis":"/api/acts/ad-aa-5-4-aileron-additional-drain-holes-cancelled/analysis","conflicts":"/api/acts/ad-aa-5-4-aileron-additional-drain-holes-cancelled/conflicts","importantCases":"/api/acts/ad-aa-5-4-aileron-additional-drain-holes-cancelled/important-cases","documents":"/api/acts/ad-aa-5-4-aileron-additional-drain-holes-cancelled/documents"}}