{"id":"F2008L01469","name":"AD/PA-20/13 - Wing Fuel Tank Cap - Modification - CANCELLED","slug":"ad-pa-20-13-wing-fuel-tank-cap-modification-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":119789,"registerId":"commonwealth-F2008L01469-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Piper PA-20 (Pacer) Series Aeroplanes","sectionType":"division","heading":"Piper PA-20 (Pacer) Series Aeroplanes","content":"### Piper PA-20 (Pacer) Series Aeroplanes\n\n| AD/PA-20/13 | Wing Fuel Tank Cap - Modification | 6/2008 |\n| ----------- | --------------------------------- | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                         |\n| ------------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 5 June 2008.                                                                                                                                                                                                               |\n| Background:  | This Directive specified once-only modification of the wing fuel tank cap in accordance with Piper SB No. 351. This Directive was based on USA Directive78-10-03. These documents were published in 1978 so the unsafe condition no longer exists. |\n\n![](image.001.png)\n\nJames Coyne  \nDelegate of the Civil Aviation Safety Authority\n\n23 April 2008","sortOrder":0},{"sectionNumber":"AD/PA-20/13","sectionType":"part","heading":"AD/PA-20/13","content":"## AD/PA-20/13","sortOrder":1},{"sectionNumber":"Wing Fuel Tank Cap - Modification","sectionType":"part","heading":"Wing Fuel Tank Cap - Modification","content":"## Wing Fuel Tank Cap - Modification","sortOrder":2},{"sectionNumber":"6/2008","sectionType":"part","heading":"6/2008","content":"## 6/2008","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1887},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"The instrument performs exactly as labelled—it cancels a previous airworthiness directive without introducing new requirements, expanding regulated parties, or altering the regulatory framework."},"complexity_factors":["Single operative provision (cancellation only)","No defined terms or interpretation section","No conditional logic, exceptions, or procedural steps","Extremely short (under 100 words of substantive content)","No cross-references to active legislation (only historical references to superseded documents)"],"plain_english_summary":"**What this does:** This document officially cancels a previous aircraft safety rule (Airworthiness Directive AD/PA-20/13) that required owners of Piper PA-20 Pacer aeroplanes to modify their wing fuel tank caps.\n\n**Who it affects:** Owners and operators of Piper PA-20 Pacer aircraft. However, since this is a cancellation, it removes a previous obligation rather than imposing a new one.\n\n**Why it matters:** The original safety directive was issued in 1978 to fix a specific unsafe condition with fuel tank caps. By 2008, the Civil Aviation Safety Authority determined this safety risk no longer exists—likely because affected aircraft have either been modified or retired from service. This cancellation removes the legal requirement to perform this specific modification, simplifying maintenance obligations for any remaining aircraft of this type.\n\n**Effective date:** The cancellation took effect on 5 June 2008."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-20-13-wing-fuel-tank-cap-modification-cancelled","history":"/api/acts/ad-pa-20-13-wing-fuel-tank-cap-modification-cancelled/history","analysis":"/api/acts/ad-pa-20-13-wing-fuel-tank-cap-modification-cancelled/analysis","conflicts":"/api/acts/ad-pa-20-13-wing-fuel-tank-cap-modification-cancelled/conflicts","importantCases":"/api/acts/ad-pa-20-13-wing-fuel-tank-cap-modification-cancelled/important-cases","documents":"/api/acts/ad-pa-20-13-wing-fuel-tank-cap-modification-cancelled/documents"}}