{"id":"F2008L02483","name":"AD/PA-31/29 - Elevator Balance Weight Attach Bolts - Inspection - CANCELLED","slug":"ad-pa-31-29-elevator-balance-weight-attach-bolts-inspection-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":74428,"registerId":"commonwealth-F2008L02483-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Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Piper PA-31 Series Aeroplanes","sectionType":"division","heading":"Piper PA-31 Series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-31/29 | Elevator Balance WeightAttach Bolts - Inspection | 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 inspection of the elevator balance weight attachment bolts in accordance with Piper SB No. 681. The AD required compliance within 100 hours TIS after January 1974 so all affected aircraft would have been modified long ago. |\n\n![](image.001.png)\n\nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n13 June 2008","sortOrder":0},{"sectionNumber":"AD/PA-31/29","sectionType":"part","heading":"AD/PA-31/29","content":"## AD/PA-31/29","sortOrder":1},{"sectionNumber":"Elevator Balance WeightAttach Bolts - In","sectionType":"part","heading":"Elevator Balance WeightAttach Bolts - Inspection","content":"## Elevator Balance Weight  \nAttach Bolts - Inspection","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":2108},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":true,"description":"The instrument has been completely cancelled, eliminating the original inspection requirement for elevator balance weight attach bolts. The regulatory scope has narrowed from an active safety mandate applicable to Piper PA-31 aircraft to no requirement whatsoever."},"complexity_factors":["Single operative provision (cancellation of previous requirements)","No defined terms or interpretation section","No conditional logic, exceptions, or nested provisions","Minimal cross-referencing (only historical reference to manufacturer bulletin)","Extremely short document with straightforward purpose"],"plain_english_summary":"This document cancels a previous aviation safety rule (Airworthiness Directive AD/PA-31/29) that applied to Piper PA-31 series aircraft.\n\n**What the original rule required:**\nThe directive previously required a one-time inspection of the bolts attaching the elevator balance weights (counterweights that help stabilize the aircraft's tail control surfaces). Aircraft owners had to complete this inspection within 100 hours of flying time after January 1974, following the manufacturer's Service Bulletin No. 681.\n\n**Why it is being cancelled:**\nSince the compliance deadline passed over 30 years ago, all affected aircraft would have been inspected and modified long ago. The Civil Aviation Safety Authority has cancelled the directive effective 31 July 2008 because the requirement is now obsolete.\n\n**Who is affected:**\nOwners and operators of Piper PA-31 series aeroplanes. No action is required—the cancellation simply removes a redundant rule from the aviation safety regulations."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-31-29-elevator-balance-weight-attach-bolts-inspection-cancelled","history":"/api/acts/ad-pa-31-29-elevator-balance-weight-attach-bolts-inspection-cancelled/history","analysis":"/api/acts/ad-pa-31-29-elevator-balance-weight-attach-bolts-inspection-cancelled/analysis","conflicts":"/api/acts/ad-pa-31-29-elevator-balance-weight-attach-bolts-inspection-cancelled/conflicts","importantCases":"/api/acts/ad-pa-31-29-elevator-balance-weight-attach-bolts-inspection-cancelled/important-cases","documents":"/api/acts/ad-pa-31-29-elevator-balance-weight-attach-bolts-inspection-cancelled/documents"}}