{"id":"F2008L04041","name":"AD/DHC-3/28 - Front Fuselage - Windshield Post - CANCELLED","slug":"ad-dhc-3-28-front-fuselage-windshield-post-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":75882,"registerId":"commonwealth-F2008L04041-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"DHC-3 (Otter) Series Aeroplanes","sectionType":"division","heading":"DHC-3 (Otter) Series Aeroplanes","content":"### DHC-3 (Otter) Series Aeroplanes\n\n| AD/DHC-3/28 | Front Fuselage - Windshield Post | 12/2008 |\n| ----------- | -------------------------------- | ------- |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                                                                                          |\n| ------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 20 November 2008.                                                                                                                                                                                                                                                                           |\n| Background:  | This AD was raised in 1977 against De Havilland Canada Service Bulletin No. 3/29, requiring an inspection and repair to the windshield post. Compliance was required within 100 hours TIS after 30 June 1977.As all affected aircraft would have been inspected and repaired by now, this AD is no longer required. |\n\n![](image.001.png)\n\nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n8 October 2008","sortOrder":0},{"sectionNumber":"AD/DHC-3/28","sectionType":"part","heading":"AD/DHC-3/28","content":"## AD/DHC-3/28","sortOrder":1},{"sectionNumber":"Front Fuselage - Windshield Post","sectionType":"part","heading":"Front Fuselage - Windshield Post","content":"## Front Fuselage - Windshield Post","sortOrder":2},{"sectionNumber":"12/2008","sectionType":"part","heading":"12/2008","content":"## 12/2008","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1406},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This instrument terminates the regulatory obligation rather than expanding it. Cancellation represents the natural sunset of the directive after its safety purpose was achieved, not a shift or expansion of the original scope."},"complexity_factors":["Single operative provision (cancellation)","No defined terms or interpretation section","No conditional logic, exceptions, or procedural steps","Minimal length with straightforward historical explanation only","No cross-references to other legislation beyond descriptive background"],"plain_english_summary":"**What this does:** This document officially cancels (revokes) an older aviation safety rule that required specific structural inspections on a particular type of aircraft.\n\n**Who it affects:** Owners and operators of De Havilland Canada DHC-3 (Otter) series aeroplanes.\n\n**The backstory:** In 1977, authorities issued a safety directive requiring inspection and repair of the windshield post (the structural frame around the cockpit windows) on these aircraft. Operators had to complete this work within 100 hours of flying time after June 1977.\n\n**Why it matters now:** Since more than 30 years have passed since the original deadline, every affected aircraft has already been inspected and repaired. This cancellation removes an outdated compliance burden that is no longer necessary, reducing administrative requirements for aircraft operators while maintaining safety (since the work was already done decades ago)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-dhc-3-28-front-fuselage-windshield-post-cancelled","history":"/api/acts/ad-dhc-3-28-front-fuselage-windshield-post-cancelled/history","analysis":"/api/acts/ad-dhc-3-28-front-fuselage-windshield-post-cancelled/analysis","conflicts":"/api/acts/ad-dhc-3-28-front-fuselage-windshield-post-cancelled/conflicts","importantCases":"/api/acts/ad-dhc-3-28-front-fuselage-windshield-post-cancelled/important-cases","documents":"/api/acts/ad-dhc-3-28-front-fuselage-windshield-post-cancelled/documents"}}