{"id":"F2008L04010","name":"AD/DH 104/2 - Siebe Gorman Safety Belt - Modification - CANCELLED","slug":"ad-dh-104-2-siebe-gorman-safety-belt-modification-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":75822,"registerId":"commonwealth-F2008L04010-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"DH 104 (Dove) Series Aeroplanes","sectionType":"division","heading":"DH 104 (Dove) Series Aeroplanes","content":"### DH 104 (Dove) Series Aeroplanes\n\n| AD/DH 104/2 | Siebe Gorman Safety Belt - Modification | 12/2008 |\n| ----------- | --------------------------------------- | ------- |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                                                                                           |\n| ------------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 20 November 2008.                                                                                                                                                                                                                                                                            |\n| Background:  | This unique AD was raised in 1971 against De Havilland Modification No. Dove 542 (Technical News Sheet - TNS CT (104) No. 69), requiring a modification to Siebe Gorman Safety Belts.Compliance was before 1 September 1971.As all affected aircraft would have been modified by now, this AD is no longer required. |\n\n![](image.001.png)\n\nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n2 October 2008","sortOrder":0},{"sectionNumber":"AD/DH 104/2","sectionType":"part","heading":"AD/DH 104/2","content":"## AD/DH 104/2","sortOrder":1},{"sectionNumber":"Siebe Gorman Safety Belt - Modification","sectionType":"part","heading":"Siebe Gorman Safety Belt - Modification","content":"## Siebe Gorman Safety Belt - Modification","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":2051},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This instrument eliminates the previous requirement entirely rather than expanding its scope. The original 1971 directive mandated safety belt modifications; this instrument terminates that requirement because it has become obsolete."},"complexity_factors":["Extremely short (under 150 words of operative text)","Single operative provision (cancellation)","No defined terms or interpretation section","No cross-references to other legislative provisions","No conditional, contingent, or exception clauses"],"plain_english_summary":"**What this does:** This document officially cancels an old aircraft safety rule that required owners to modify the seatbelts (specifically Siebe Gorman safety belts) on De Havilland Dove aeroplanes.\n\n**Who it affects:** This technically applies to owners of DH 104 (Dove) series aircraft, though in practice all affected planes were modified decades ago.\n\n**The background:** In 1971, the aviation safety regulator issued a directive requiring a specific modification to safety belts on these aircraft, with a compliance deadline of 1 September 1971. This document cancels that old rule because it is no longer needed—after nearly 40 years, every affected aircraft has already been modified.\n\n**Why it matters:** This is regulatory housekeeping. By cancelling obsolete safety directives, the regulator removes unnecessary compliance burdens from aircraft maintenance crews and ensures the rulebook only contains current, relevant requirements."}},"importantCases":[],"_links":{"self":"/api/acts/ad-dh-104-2-siebe-gorman-safety-belt-modification-cancelled","history":"/api/acts/ad-dh-104-2-siebe-gorman-safety-belt-modification-cancelled/history","analysis":"/api/acts/ad-dh-104-2-siebe-gorman-safety-belt-modification-cancelled/analysis","conflicts":"/api/acts/ad-dh-104-2-siebe-gorman-safety-belt-modification-cancelled/conflicts","importantCases":"/api/acts/ad-dh-104-2-siebe-gorman-safety-belt-modification-cancelled/important-cases","documents":"/api/acts/ad-dh-104-2-siebe-gorman-safety-belt-modification-cancelled/documents"}}