{"id":"F2009L00460","name":"AD/PA-36/4 - Flap Control - Modification - CANCELLED","slug":"ad-pa-36-4-flap-control-modification-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":76999,"registerId":"commonwealth-F2009L00460-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Piper PA-36 (Pawnee Brave) Series Aeropl","sectionType":"division","heading":"Piper PA-36 (Pawnee Brave) Series Aeroplanes","content":"### Piper PA-36 (Pawnee Brave) Series Aeroplanes\n\n| AD/PA-36/4 | Flap Control - Modification | 3/2009 |\n| ---------- | --------------------------- | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                            |\n| ------------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 12 March 2009.                                                                                                                                                                |\n| Background:  | This unique Australian AD specified once-only modification of the flap control in accordance with Piper SB No. 439 within 100 hours time in service after January 1975. The AD is no longer required. |\n\n![](image.001.png)\n\nDavid Punshon  \nDelegate of the Civil Aviation Safety Authority\n\n8 January 2009","sortOrder":0},{"sectionNumber":"AD/PA-36/4","sectionType":"part","heading":"AD/PA-36/4","content":"## AD/PA-36/4","sortOrder":1},{"sectionNumber":"Flap Control - Modification","sectionType":"part","heading":"Flap Control - Modification","content":"## Flap Control - Modification","sortOrder":2},{"sectionNumber":"3/2009","sectionType":"part","heading":"3/2009","content":"## 3/2009","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1854},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This instrument terminates the legal scope of the original directive rather than expanding it. The legislation effectively removes obligations rather than creating new ones."},"complexity_factors":["Single operative provision (cancellation of previous instrument)","No definitions section","No exceptions, conditions, or nested logic","Cross-references only one previous document (Piper SB No. 439)"],"plain_english_summary":"This document cancels a previous aircraft safety rule (**Airworthiness Directive**) that required owners of Piper PA-36 Pawnee Brave aeroplanes to modify their flap control systems. \n\n**What it did previously:**\n- Required a one-time modification to the flap controls\n- Had to be completed within 100 hours of flying time after January 1975\n- Required following the manufacturer's Service Bulletin No. 439\n\n**What this document does:**\n- Cancels that requirement effective 12 March 2009\n- Means owners no longer need to comply with the previous modification rule\n\nThis affects agricultural aircraft operators and owners of these specific Piper crop-duster planes."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-36-4-flap-control-modification-cancelled","history":"/api/acts/ad-pa-36-4-flap-control-modification-cancelled/history","analysis":"/api/acts/ad-pa-36-4-flap-control-modification-cancelled/analysis","conflicts":"/api/acts/ad-pa-36-4-flap-control-modification-cancelled/conflicts","importantCases":"/api/acts/ad-pa-36-4-flap-control-modification-cancelled/important-cases","documents":"/api/acts/ad-pa-36-4-flap-control-modification-cancelled/documents"}}