{"id":"F2008L01466","name":"AD/PA-18/10 - Wing Fuel Tank Cap - Modification - CANCELLED","slug":"ad-pa-18-10-wing-fuel-tank-cap-modification-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":119783,"registerId":"commonwealth-F2008L01466-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Piper PA-18 and 19 (Super Cub) Series Ae","sectionType":"division","heading":"Piper PA-18 and 19 (Super Cub) Series Aeroplanes","content":"### Piper PA-18 and 19 (Super Cub) Series Aeroplanes\n\n| AD/PA-18/10 | 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-18/10","sectionType":"part","heading":"AD/PA-18/10","content":"## AD/PA-18/10","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":2002},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This instrument performs exactly as intended by terminating the previous Airworthiness Directive. It does not expand the regulatory scope; rather, it concludes the lifecycle of the original directive."},"complexity_factors":["Single operative provision cancelling a previous instrument","No defined terms or interpretive sections","No procedural steps, compliance deadlines, or conditional logic","Minimal background section containing only historical context"],"plain_english_summary":"This document officially cancels a previous aircraft safety rule (**Airworthiness Directive AD/PA-18/10**) that applied to **Piper PA-18 and PA-19 Super Cub aeroplanes**.\n\n**What the old rule required**\nPreviously, owners had to modify the wing fuel tank caps once, following a 1978 manufacturer service bulletin (Piper SB No. 351). This addressed a safety issue identified in a US airworthiness directive from 1978.\n\n**What this document does**\nIt **cancels that modification requirement** completely. The cancellation took effect on **5 June 2008**.\n\n**Why it matters**\nBecause the original safety documents date back to 1978—30 years prior—the unsafe condition they addressed no longer exists in the aircraft fleet. This removes an outdated maintenance burden for owners and operators of these aircraft."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-18-10-wing-fuel-tank-cap-modification-cancelled","history":"/api/acts/ad-pa-18-10-wing-fuel-tank-cap-modification-cancelled/history","analysis":"/api/acts/ad-pa-18-10-wing-fuel-tank-cap-modification-cancelled/analysis","conflicts":"/api/acts/ad-pa-18-10-wing-fuel-tank-cap-modification-cancelled/conflicts","importantCases":"/api/acts/ad-pa-18-10-wing-fuel-tank-cap-modification-cancelled/important-cases","documents":"/api/acts/ad-pa-18-10-wing-fuel-tank-cap-modification-cancelled/documents"}}