{"id":"F2008L01649","name":"AD/PA-28/47 - Automatic Pilot Roll Servo Shear Pin - Installation - CANCELLED","slug":"ad-pa-28-47-automatic-pilot-roll-servo-shear-pin-installation-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":73736,"registerId":"commonwealth-F2008L01649-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Piper PA-28 Series Aeroplanes","sectionType":"division","heading":"Piper PA-28 Series Aeroplanes","content":"### Piper PA-28 Series Aeroplanes\n\n| AD/PA-28/47 | Automatic Pilot Roll ServoShear Pin - Installation | 6/2008 |\n| ----------- | -------------------------------------------------- | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                               |\n| ------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |\n|              | This AD is cancelled on 5 June 2008.                                                                                                                                                                                     |\n| Background:  | This Directive specified mandatory modification of any autopilot in accordance with Piper SL No. 695 or Edo-Aire Mitchell SL ML38 within 200 hours from September 1974. Therefore the unsafe condition no longer exists. |\n\n![](image.001.png)\n\nJames Coyne  \nDelegate of the Civil Aviation Safety Authority\n\n22 April 2008","sortOrder":0},{"sectionNumber":"AD/PA-28/47","sectionType":"part","heading":"AD/PA-28/47","content":"## AD/PA-28/47","sortOrder":1},{"sectionNumber":"Automatic Pilot Roll ServoShear Pin - In","sectionType":"part","heading":"Automatic Pilot Roll ServoShear Pin - Installation","content":"## Automatic Pilot Roll Servo  \nShear Pin - Installation","sortOrder":2},{"sectionNumber":"6/2008","sectionType":"part","heading":"6/2008","content":"## 6/2008","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2306},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":true,"description":"This instrument eliminates all previous obligations under the Airworthiness Directive, reducing the scope from mandatory autopilot modifications to zero by formally cancelling the requirement."},"complexity_factors":["Single operative provision: cancellation of previous directive with no ongoing obligations","No conditional logic, exceptions, or procedural requirements","Zero cross-references to other legislative instruments (only historical manufacturer service letters)","Extremely short length (approximately 40 words of substantive legal content)","No defined terms or interpretive provisions"],"plain_english_summary":"This instrument **cancels a previous safety rule** for Piper PA-28 aircraft owners.\n\n**What it does:**\n* **Removes a maintenance obligation**: Previously, owners had to modify their autopilot's roll servo shear pin within 200 hours of flying time, following specific manufacturer service letters (Piper SL No. 695 or Edo-Aire Mitchell SL ML38).\n* **Why now?**: The safety risk that originally required this fix no longer exists, so the mandatory upgrade is unnecessary.\n\n**Who it affects:**\n* Owners and operators of Piper PA-28 series aeroplanes who were previously subject to Airworthiness Directive AD/PA-28/47.\n\n**When it happened:**\n* The cancellation took effect on **5 June 2008**."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-28-47-automatic-pilot-roll-servo-shear-pin-installation-cancelled","history":"/api/acts/ad-pa-28-47-automatic-pilot-roll-servo-shear-pin-installation-cancelled/history","analysis":"/api/acts/ad-pa-28-47-automatic-pilot-roll-servo-shear-pin-installation-cancelled/analysis","conflicts":"/api/acts/ad-pa-28-47-automatic-pilot-roll-servo-shear-pin-installation-cancelled/conflicts","importantCases":"/api/acts/ad-pa-28-47-automatic-pilot-roll-servo-shear-pin-installation-cancelled/important-cases","documents":"/api/acts/ad-pa-28-47-automatic-pilot-roll-servo-shear-pin-installation-cancelled/documents"}}