{"id":"F2008L01472","name":"AD/PA-22/28 - Automatic Pilot Roll Servo Shear Pin - Installation - CANCELLED","slug":"ad-pa-22-28-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repealed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":119798,"registerId":"commonwealth-F2008L01472-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Piper PA-22 (Tri-Pacer and Colt) Series ","sectionType":"division","heading":"Piper PA-22 (Tri-Pacer and Colt) Series Aeroplanes","content":"### Piper PA-22 (Tri-Pacer and Colt) Series Aeroplanes\n\n| AD/PA-22/28 | Automatic Pilot Roll Servo Shear Pin - Installation | 6/2008 |\n| ----------- | --------------------------------------------------- | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                     |\n| ------------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 5 June 2008.                                                                                                                                                                           |\n| Background:  | This Directive specified once-only modification of any autopilot in accordance with Piper SL No. 695 or Edo-Aire Mitchell SL ML38 within 200 hours from September 1974. The unsafe condition no longer exists. |\n\n![](image.001.png)\n\nJames Coyne  \nDelegate of the Civil Aviation Safety Authority\n\n23 April 2008","sortOrder":0},{"sectionNumber":"AD/PA-22/28","sectionType":"part","heading":"AD/PA-22/28","content":"## AD/PA-22/28","sortOrder":1},{"sectionNumber":"Automatic Pilot Roll Servo Shear Pin - I","sectionType":"part","heading":"Automatic Pilot Roll Servo Shear Pin - Installation","content":"## Automatic Pilot Roll Servo Shear 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":2108},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This instrument terminates the previous Airworthiness Directive entirely; it does not expand, narrow, or alter the regulatory scope, but rather eliminates the previous requirements completely."},"complexity_factors":["Single operative provision consisting of one word ('CANCELLED')","No defined terms or interpretive provisions","No conditional logic, exceptions, or cross-references to other legislation","Historical background provided for context only"],"plain_english_summary":"**What this does:** This document officially cancels a previous safety rule (Airworthiness Directive) that applied to Piper PA-22 Tri-Pacer and Colt aircraft.\n\n**The cancelled rule:** The original directive required owners to modify their autopilot roll servo shear pins according to specific manufacturer technical bulletins (Piper Service Letter No. 695 or Edo-Aire Mitchell Service Letter ML38) within a set timeframe starting September 1974.\n\n**Why it matters:** The safety risk that originally required this modification no longer exists, so the Civil Aviation Safety Authority has removed the requirement. Owners of these aircraft are no longer obligated to make this specific autopilot modification."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-22-28-automatic-pilot-roll-servo-shear-pin-installation-cancelled","history":"/api/acts/ad-pa-22-28-automatic-pilot-roll-servo-shear-pin-installation-cancelled/history","analysis":"/api/acts/ad-pa-22-28-automatic-pilot-roll-servo-shear-pin-installation-cancelled/analysis","conflicts":"/api/acts/ad-pa-22-28-automatic-pilot-roll-servo-shear-pin-installation-cancelled/conflicts","importantCases":"/api/acts/ad-pa-22-28-automatic-pilot-roll-servo-shear-pin-installation-cancelled/important-cases","documents":"/api/acts/ad-pa-22-28-automatic-pilot-roll-servo-shear-pin-installation-cancelled/documents"}}