{"id":"F2008L02645","name":"AD/PA-31/52 - Replacement of Radio Power Relay Cover Spacer Bushings - CANCELLED","slug":"ad-pa-31-52-replacement-of-radio-power-relay-cover-spacer-bushings-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":74682,"registerId":"commonwealth-F2008L02645-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Piper PA-31 Series Aeroplanes","sectionType":"division","heading":"Piper PA-31 Series Aeroplanes","content":"### Piper PA-31 Series Aeroplanes\n\n| AD/PA-31/52 | Replacement of Radio Power RelayCover Spacer Bushings | 8/2008 |\n| ----------- | ----------------------------------------------------- | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                 |\n| ------------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 31 July 2008.                                                                                                                                                                                      |\n| Background:  | This unique Australian AD required once-only replacement of bushings in accordance with Piper SB No. 535. The AD required compliance within 10 hours TIS after January 1977. All affected aircraft have now been modified. |\n\n![](image.001.png)\n\nJames Coyne  \nDelegate of the Civil Aviation Safety Authority\n\n12 June 2008","sortOrder":0},{"sectionNumber":"AD/PA-31/52","sectionType":"part","heading":"AD/PA-31/52","content":"## AD/PA-31/52","sortOrder":1},{"sectionNumber":"Replacement of Radio Power RelayCover Sp","sectionType":"part","heading":"Replacement of Radio Power RelayCover Spacer Bushings","content":"## Replacement of Radio Power Relay  \nCover Spacer Bushings","sortOrder":2},{"sectionNumber":"8/2008","sectionType":"part","heading":"8/2008","content":"## 8/2008","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1952},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"The directive maintained its original narrow scope throughout its lifecycle — applying only to the specific bushing replacement task for Piper PA-31 aircraft. It was cancelled once fleet-wide compliance was achieved, which was the intended conclusion."},"complexity_factors":["Single operative provision (cancellation)","No defined terms or interpretation section","References only one external technical document","Straightforward retrospective compliance regime","No conditional logic or exceptions"],"plain_english_summary":"**What this was:** An aviation safety directive requiring owners of Piper PA-31 aircraft (twin-engine planes) to replace worn spacer bushings in the radio power relay cover — a small component ensuring the radio electrical system works properly.\n\n**Who it affected:** Anyone operating Piper PA-31 series aeroplanes in Australia.\n\n**What had to happen:** The bushings had to be replaced once, following the manufacturer's instructions (Piper Service Bulletin No. 535), within 10 hours of flying time after January 1977.\n\n**Current status:** **Cancelled.** This directive was cancelled on 31 July 2008 because every affected aircraft had already been modified. It no longer imposes any legal obligations but remains part of maintenance history records."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-31-52-replacement-of-radio-power-relay-cover-spacer-bushings-cancelled","history":"/api/acts/ad-pa-31-52-replacement-of-radio-power-relay-cover-spacer-bushings-cancelled/history","analysis":"/api/acts/ad-pa-31-52-replacement-of-radio-power-relay-cover-spacer-bushings-cancelled/analysis","conflicts":"/api/acts/ad-pa-31-52-replacement-of-radio-power-relay-cover-spacer-bushings-cancelled/conflicts","importantCases":"/api/acts/ad-pa-31-52-replacement-of-radio-power-relay-cover-spacer-bushings-cancelled/important-cases","documents":"/api/acts/ad-pa-31-52-replacement-of-radio-power-relay-cover-spacer-bushings-cancelled/documents"}}