{"id":"F2008L01850","name":"AD/PA-23/5 - Main Landing Gear Attachment Points - Modification - CANCELLED","slug":"ad-pa-23-5-main-landing-gear-attachment-points-modification-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":74045,"registerId":"commonwealth-F2008L01850-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Piper PA-23 (Apache and Aztec) Series Ae","sectionType":"division","heading":"Piper PA-23 (Apache and Aztec) Series Aeroplanes","content":"### Piper PA-23 (Apache and Aztec) Series Aeroplanes\n\n| AD/PA-23/5 | Main Landing Gear AttachmentPoints - Modification | 7/2008 |\n| ---------- | ------------------------------------------------- | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                               |\n| ------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |\n|              | This AD is cancelled on 3 July 2008.                                                                                                                                                                                     |\n| Background:  | This Directive was based on Piper Service Letter No. 134 calling for once-only modification of 109 aircraft in the mid 1950s. As all affected aircraft would have been modified long ago, this AD is no longer required. |\n\n![](image.001.png)\n\nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n7 May 2008","sortOrder":0},{"sectionNumber":"AD/PA-23/5","sectionType":"part","heading":"AD/PA-23/5","content":"## AD/PA-23/5","sortOrder":1},{"sectionNumber":"Main Landing Gear AttachmentPoints - Mod","sectionType":"part","heading":"Main Landing Gear AttachmentPoints - Modification","content":"## Main Landing Gear Attachment  \nPoints - Modification","sortOrder":2},{"sectionNumber":"7/2008","sectionType":"part","heading":"7/2008","content":"## 7/2008","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1918},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This instrument terminates an obsolete regulatory requirement without expanding the scope of the legislation. It is a housekeeping measure that reduces regulatory burden rather than growing beyond the original purpose."},"complexity_factors":["Single operative provision (cancellation only)","No defined terms or interpretation section","No cross-references to other legislation","No compliance deadlines, conditions, or exceptions","Simple factual background with no legal tests"],"plain_english_summary":"**What this does**\nThis document officially **cancels** an old aircraft safety rule (an Airworthiness Directive) that required modifications to the main landing gear attachment points on Piper PA-23 Apache and Aztec aeroplanes.\n\n**Why it existed**\nThe original rule was issued in the mid-1950s based on a manufacturer service letter. It required a one-time modification to 109 specific aircraft to address potential safety issues with the landing gear attachment points.\n\n**Why it's being cancelled**\nAll affected aircraft would have been modified decades ago. Since the required work is long finished and the aircraft are either retired or already compliant, the Civil Aviation Safety Authority (CASA) has cancelled the directive as obsolete.\n\n**What this means**\nOwners and operators of these Piper aircraft no longer need to track or comply with this specific maintenance rule. The cancellation took effect on 3 July 2008."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-23-5-main-landing-gear-attachment-points-modification-cancelled","history":"/api/acts/ad-pa-23-5-main-landing-gear-attachment-points-modification-cancelled/history","analysis":"/api/acts/ad-pa-23-5-main-landing-gear-attachment-points-modification-cancelled/analysis","conflicts":"/api/acts/ad-pa-23-5-main-landing-gear-attachment-points-modification-cancelled/conflicts","importantCases":"/api/acts/ad-pa-23-5-main-landing-gear-attachment-points-modification-cancelled/important-cases","documents":"/api/acts/ad-pa-23-5-main-landing-gear-attachment-points-modification-cancelled/documents"}}