{"id":"F2008L04120","name":"AD/PA-25/31 - Rapid Throttle Movement - Warning Placard - CANCELLED","slug":"ad-pa-25-31-rapid-throttle-movement-warning-placard-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":76038,"registerId":"commonwealth-F2008L04120-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Piper PA-25 (Pawnee) Series Aeroplanes","sectionType":"division","heading":"Piper PA-25 (Pawnee) Series Aeroplanes","content":"### Piper PA-25 (Pawnee) Series Aeroplanes\n\n| AD/PA-25/31 | Rapid Throttle Movement - Warning Placard | 12/2008 |\n| ----------- | ----------------------------------------- | ------- |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                                                                                          |\n| ------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 20 November 2008.                                                                                                                                                                                                                                                                           |\n| Background:  | This AD specified installation of a placard in accordance with Piper SL No. 644 which was raised to comply with USA AD 72-24-02. The placard was to advise that the throttle must not be opened rapidly. Compliance was required within 10 hours time in service after November 1972. The AD is no longer required. |\n\n![](image.001.png)\n\nCharles Lenarcic  \nDelegate of the Civil Aviation Safety Authority\n\n9 October 2008","sortOrder":0},{"sectionNumber":"AD/PA-25/31","sectionType":"part","heading":"AD/PA-25/31","content":"## AD/PA-25/31","sortOrder":1},{"sectionNumber":"Rapid Throttle Movement - Warning Placar","sectionType":"part","heading":"Rapid Throttle Movement - Warning Placard","content":"## Rapid Throttle Movement - Warning Placard","sortOrder":2},{"sectionNumber":"12/2008","sectionType":"part","heading":"12/2008","content":"## 12/2008","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2716},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This instrument performs exactly as intended: it cancels a previous Airworthiness Directive. It removes a regulatory burden (placard installation) without expanding into new regulatory areas or creating new compliance obligations."},"complexity_factors":["Single operative provision (cancellation)","No conditional logic, exceptions, or triggers","Only two historical cross-references (Piper SL No. 644 and USA AD 72-24-02)","Extremely short length (under 100 words of substantive content)","No definitions or interpretation section"],"plain_english_summary":"**What this document does**\n\nThis officially cancels a previous aircraft safety rule (Airworthiness Directive) that applied to **Piper PA-25 Pawnee aeroplanes** — agricultural aircraft commonly used for crop-dusting.\n\n**What used to be required**\nThe previous rule required aircraft owners to install a **warning sticker (placard)** in the cockpit advising pilots not to shove the throttle forward rapidly (open the power too quickly). This was originally mandated in 1972 to prevent engine or airframe damage.\n\n**What changes now**\nAs of **20 November 2008**, owners no longer need to install or maintain this specific warning sticker. The safety requirement has been completely removed because it is no longer considered necessary.\n\n**Who decided this**\nCharles Lenarcic, acting as a delegate of the Civil Aviation Safety Authority (CASA) — the Australian government body that regulates aviation safety."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-25-31-rapid-throttle-movement-warning-placard-cancelled","history":"/api/acts/ad-pa-25-31-rapid-throttle-movement-warning-placard-cancelled/history","analysis":"/api/acts/ad-pa-25-31-rapid-throttle-movement-warning-placard-cancelled/analysis","conflicts":"/api/acts/ad-pa-25-31-rapid-throttle-movement-warning-placard-cancelled/conflicts","importantCases":"/api/acts/ad-pa-25-31-rapid-throttle-movement-warning-placard-cancelled/important-cases","documents":"/api/acts/ad-pa-25-31-rapid-throttle-movement-warning-placard-cancelled/documents"}}