{"id":"F2008L03356","name":"AD/PA-32/31 - Automatic Pilot Servo Roll Shear Pin - Installation - CANCELLED","slug":"ad-pa-32-31-automatic-pilot-servo-roll-shear-pin-installation-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":120260,"registerId":"commonwealth-F2008L03356-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Piper PA-32 (Cherokee Six) Series Aeropl","sectionType":"division","heading":"Piper PA-32 (Cherokee Six) Series Aeroplanes","content":"### Piper PA-32 (Cherokee Six) Series Aeroplanes\n\n| AD/PA-32/31 | Automatic Pilot Servo RollShear Pin - Installation | 10/2008 |\n| ----------- | -------------------------------------------------- | ------- |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                        |\n| ------------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 25 September 2008.                                                                                                                                                                        |\n| Background:  | This unique Australian AD specified once-only modification of any autopilot in accordance with Piper SL No. 695 or Edo-Aire Mitchell SL ML38 within 200 hours after September 1974. The AD is no longer required. |\n\n![](image.001.png)\n\nJames Coyne  \nDelegate of the Civil Aviation Safety Authority\n\n8 August 2008","sortOrder":0},{"sectionNumber":"AD/PA-32/31","sectionType":"part","heading":"AD/PA-32/31","content":"## AD/PA-32/31","sortOrder":1},{"sectionNumber":"Automatic Pilot Servo RollShear Pin - In","sectionType":"part","heading":"Automatic Pilot Servo RollShear Pin - Installation","content":"## Automatic Pilot Servo Roll  \nShear Pin - Installation","sortOrder":2},{"sectionNumber":"10/2008","sectionType":"part","heading":"10/2008","content":"## 10/2008","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2018},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":true,"description":"This instrument completely eliminates the regulatory scope of the original AD. The original directive mandated a specific physical modification (autopilot servo roll shear pin installation) for Piper PA-32 aircraft, while this cancellation removes that mandatory obligation entirely, reducing the compliance burden to zero."},"complexity_factors":["Single operative provision: 'CANCELLED'","No defined terms or interpretation section","No conditional logic, exceptions, or procedural steps","Minimal cross-referencing (only refers to the AD being cancelled and historical manufacturer service letters)"],"plain_english_summary":"**What this is:** This document cancels a previous aviation safety rule (Airworthiness Directive AD/PA-32/31) that applied to owners of **Piper PA-32 (Cherokee Six) aircraft**.\n\n**What it did previously:** The original rule required a one-time mechanical modification to the aircraft's autopilot system—specifically installing a new shear pin for the roll servo—according to manufacturer instructions (Piper Service Letter No. 695 or Edo-Aire Mitchell Service Letter ML38). This had to be done within 200 hours of flying time after September 1974.\n\n**What happens now:** As of **25 September 2008**, aircraft owners no longer need to comply with this modification requirement. The safety issue that prompted the original rule is no longer considered a risk, so the directive has been scrapped entirely.\n\n**Who is affected:** Owners and operators of Piper PA-32 series aircraft who were previously required to track compliance with this autopilot modification."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-32-31-automatic-pilot-servo-roll-shear-pin-installation-cancelled","history":"/api/acts/ad-pa-32-31-automatic-pilot-servo-roll-shear-pin-installation-cancelled/history","analysis":"/api/acts/ad-pa-32-31-automatic-pilot-servo-roll-shear-pin-installation-cancelled/analysis","conflicts":"/api/acts/ad-pa-32-31-automatic-pilot-servo-roll-shear-pin-installation-cancelled/conflicts","importantCases":"/api/acts/ad-pa-32-31-automatic-pilot-servo-roll-shear-pin-installation-cancelled/important-cases","documents":"/api/acts/ad-pa-32-31-automatic-pilot-servo-roll-shear-pin-installation-cancelled/documents"}}