{"id":"F2006B05442","name":"AD/PA-22/9 Amdt 5 - Wing Lift Strut Forks","slug":"ad-pa-22-9-amdt-5-wing-lift-strut-forks","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":46166,"registerId":"commonwealth-F2006B05442-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-22/9 Amdt 5 - Wing Lift Strut Forks","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nPiper PA-22 (Tri-Pacer and Colt) Series Aeroplanes\n\nAD/PA-22/9\n\nAmdt 5\n\n  \nWing Lift Strut Forks 5/95\n\nApplicability: All Piper PA-22 models.\n\nRequirement: 1. Install “No Step” Decal on starboard lift strut.\n\n2. Retire lift strut forks from service.\n\nInstallation of sealed lift struts in accordance with Piper mandatory Service Bulletin 528D cancels the retirement Requirement of this Directive (AD/PA-22/33 refers).\n\nFor those models which have a fairing over the front and rear strut lower ends, a single placard on the starboard fairing will suffice.\n\nNote: FAA AD 93-10-06 and Piper Service Bulletin 157D refer.\n\nCompliance: 1. Install placard before 50 hours time in service after 30 September 1986.\n\n2. Retire lift strut forks before the accumulation of 1000 hours time in service. This amendment is effective from 27 April 1995.\n\nBackground: This Amendment specifies the individual actions to be taken and provides for a terminating modification. The continuing airworthiness of these components is managed on a retirement life basis. It is no longer required to perform a magnetic particle inspection at the half life (500 hours).","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":3138},"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This amendment refines existing requirements rather than expanding scope. It removes the 500-hour magnetic particle inspection requirement and adds a terminating modification option (sealed struts), but remains focused on the original safety issue of wing lift strut forks on PA-22 aircraft."},"complexity_factors":["Cross-references to external technical documents (Piper Service Bulletin 528D, FAA AD 93-10-06, and other CASA directives)","Conditional logic allowing exception to retirement requirement if sealed struts are installed","Dual compliance timelines mixing calendar dates (for decals) and accumulated flight hours (for part retirement)","Technical aviation terminology requiring specialized knowledge to interpret (e.g., 'time in service', 'lift strut forks', 'magnetic particle inspection')"],"plain_english_summary":"This AD requires owners of Piper PA‑22 Tri‑Pacer and Colt aircraft to attach a \"No Step\" decal to the starboard wing lift strut and to remove lift‑strut forks from service before they reach 1,000 flight hours to prevent wing‑structure failure. \n\nIf sealed lift struts are installed per Piper Service Bulletin 528D, the fork‑replacement requirement is waived. The prior 500‑hour magnetic‑particle inspection requirement has been removed."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-22-9-amdt-5-wing-lift-strut-forks","history":"/api/acts/ad-pa-22-9-amdt-5-wing-lift-strut-forks/history","analysis":"/api/acts/ad-pa-22-9-amdt-5-wing-lift-strut-forks/analysis","conflicts":"/api/acts/ad-pa-22-9-amdt-5-wing-lift-strut-forks/conflicts","importantCases":"/api/acts/ad-pa-22-9-amdt-5-wing-lift-strut-forks/important-cases","documents":"/api/acts/ad-pa-22-9-amdt-5-wing-lift-strut-forks/documents"}}