{"id":"F2008L02636","name":"AD/PA-31/100 - Fuel Scavenge Pump Check Valves - CANCELLED","slug":"ad-pa-31-100-fuel-scavenge-pump-check-valves-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":74671,"registerId":"commonwealth-F2008L02636-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Piper PA-31 Series Aeroplanes","sectionType":"division","heading":"Piper PA-31 Series Aeroplanes","content":"### Piper PA-31 Series Aeroplanes\n\n| AD/PA-31/100 | Fuel Scavenge Pump Check Valves | 8/2008 |\n| ------------ | ------------------------------- | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                               |\n| ------------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 31 July 2008.                                                                                                                                                                                                                    |\n| Background:  | This unique Australian AD required once-only relocation of the fuel scavenge pump check valves in accordance with Piper SB No. 734. The AD required modification within 100 hours TIS after February 1982. All affected aircraft have now been modified. |\n\n![](image.001.png)\n\nJames Coyne  \nDelegate of the Civil Aviation Safety Authority\n\n13 June 2008","sortOrder":0},{"sectionNumber":"AD/PA-31/100","sectionType":"part","heading":"AD/PA-31/100","content":"## AD/PA-31/100","sortOrder":1},{"sectionNumber":"Fuel Scavenge Pump Check Valves","sectionType":"part","heading":"Fuel Scavenge Pump Check Valves","content":"## Fuel Scavenge Pump Check Valves","sortOrder":2},{"sectionNumber":"8/2008","sectionType":"part","heading":"8/2008","content":"## 8/2008","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1995},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":true,"description":"This instrument eliminates all regulatory obligations. The scope has reduced from 'mandatory safety modification required for Piper PA-31 aircraft' to 'no current requirements'."},"complexity_factors":["Single operative provision (cancellation of previous directive)","No defined terms or interpretive sections","No conditional logic or compliance thresholds currently in force","Background section provides only historical context"],"plain_english_summary":"**What this document does**\nThis instrument cancels a previous aviation safety rule (Airworthiness Directive) that applied to Piper PA-31 series aircraft. The original rule required owners to relocate fuel scavenge pump check valves within 100 hours of flying time after February 1982, following Piper Service Bulletin No. 734.\n\n**Why it matters**\nThe safety modification has been completed on all affected aircraft, so the requirement is no longer needed. This document formally removes the rule from the books, confirming that **no action is required** by aircraft owners or operators."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-31-100-fuel-scavenge-pump-check-valves-cancelled","history":"/api/acts/ad-pa-31-100-fuel-scavenge-pump-check-valves-cancelled/history","analysis":"/api/acts/ad-pa-31-100-fuel-scavenge-pump-check-valves-cancelled/analysis","conflicts":"/api/acts/ad-pa-31-100-fuel-scavenge-pump-check-valves-cancelled/conflicts","importantCases":"/api/acts/ad-pa-31-100-fuel-scavenge-pump-check-valves-cancelled/important-cases","documents":"/api/acts/ad-pa-31-100-fuel-scavenge-pump-check-valves-cancelled/documents"}}