{"id":"F2008L01474","name":"AD/PA-28/7 Amdt 1 - Magneto Radio Interference Filters - Modification - CANCELLED","slug":"ad-pa-28-7-amdt-1-magneto-radio-interference-filters-modification-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":119805,"registerId":"commonwealth-F2008L01474-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Piper PA-28 Series Aeroplanes","sectionType":"division","heading":"Piper PA-28 Series Aeroplanes","content":"### Piper PA-28 Series Aeroplanes\n\n| AD/PA-28/7 Amdt 1 | Magneto Radio InterferenceFilters - Modification | 6/2008 |\n| ----------------- | ------------------------------------------------ | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                                                               |\n| ------------ | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 5 June 2008.                                                                                                                                                                                                                                                     |\n| Background:  | This Directive specified installation of insulating boots on the terminals of magneto switch filters to control radio interference. This Directive did not specify a US Directive or Piper service document. This Directive was issued in 1969 so the unsafe condition no longer exists. |\n\n![](image.001.png)\n\nJames Coyne  \nDelegate of the Civil Aviation Safety Authority\n\n22 April 2008","sortOrder":0},{"sectionNumber":"AD/PA-28/7 Amdt 1","sectionType":"part","heading":"AD/PA-28/7 Amdt 1","content":"## AD/PA-28/7 Amdt 1","sortOrder":1},{"sectionNumber":"Magneto Radio InterferenceFilters - Modi","sectionType":"part","heading":"Magneto Radio InterferenceFilters - Modification","content":"## Magneto Radio Interference  \nFilters - 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":2491},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":true,"description":"The instrument has shifted from imposing a mandatory aircraft modification requirement (installation of insulating boots on magneto filters) to removing all requirements by cancelling the directive entirely. The scope has reduced from active regulation to nil."},"complexity_factors":["Single operative provision (cancellation of the previous directive)","No defined terms, interpretation section, or schedules","No substantive compliance obligations imposed","Minimal cross-referencing (only to the directive being cancelled)"],"plain_english_summary":"**What this does**\n\nThis document officially cancels a previous aircraft safety rule affecting **Piper PA-28 series aeroplanes** (light single-engine aircraft).\n\n**The old rule**\n\nThe original airworthiness directive (issued in 1969) required owners to install **insulating boots** (protective covers) on the terminals of magneto radio interference filters to prevent static and radio interference.\n\n**What changed**\n\n*   **Status:** The entire directive is **cancelled** as of 5 June 2008\n*   **Effect:** Aircraft owners and mechanics no longer need to comply with this specific modification requirement\n*   **Reason:** The rule is nearly 40 years old. Any aircraft affected have long since been modified or retired from service, so the safety risk no longer exists in the fleet\n\n**Who this affects**\n\nOwners, operators, and maintenance organisations for Piper PA-28 series aircraft, though practically speaking, this simply removes a redundant paperwork obligation for an aging requirement."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-28-7-amdt-1-magneto-radio-interference-filters-modification-cancelled","history":"/api/acts/ad-pa-28-7-amdt-1-magneto-radio-interference-filters-modification-cancelled/history","analysis":"/api/acts/ad-pa-28-7-amdt-1-magneto-radio-interference-filters-modification-cancelled/analysis","conflicts":"/api/acts/ad-pa-28-7-amdt-1-magneto-radio-interference-filters-modification-cancelled/conflicts","importantCases":"/api/acts/ad-pa-28-7-amdt-1-magneto-radio-interference-filters-modification-cancelled/important-cases","documents":"/api/acts/ad-pa-28-7-amdt-1-magneto-radio-interference-filters-modification-cancelled/documents"}}