{"id":"F2006B05584","name":"AD/PA-28/16 Amdt 2 - Aileron Spar Cracking","slug":"ad-pa-28-16-amdt-2-aileron-spar-cracking","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":46615,"registerId":"commonwealth-F2006B05584-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-28/16 Amdt 2 - Aileron Spar Cracking","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-generator: Aspose.Words for .NET 22.10.0\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Piper PA-28 Series Aeroplanes\n\n \n\nAD/PA-28/16\n\nAmdt 2\n\n\nAileron Spar Cracking 1/86\n\n \n\nApplicability: All models except PA-28-151 with S/Nos 28-7415001 to 28-7515459\n\n \n\nRequirement: Inspect the aileron spar and doubler for cracking in the radii in the vicinity of the hinges.\n\n \n\nCompliance: At each issue of a new Maintenance Release.\n\n \n\nBackground:  This amendment revises the compliance requirements to coincide with varying periodic inspection intervals.\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2031},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"Amendment 2 does not alter the substantive scope of the original directive. It solely revises the compliance timing requirements to accommodate varying periodic inspection intervals across different aircraft maintenance programs, while maintaining the same inspection content, affected aircraft models, and safety objective."},"complexity_factors":["Single mechanical inspection requirement with specific physical locations (radii near hinges)","One clear exclusion criteria based on aircraft model and serial number range","Compliance triggered by a standard existing regulatory event (issuance of Maintenance Release)","No nested exceptions, conditional clauses, or cross-references to other legislative instruments","Limited defined terms (5 technical aviation terms: aileron, spar, doubler, radii, Maintenance Release)"],"plain_english_summary":"This rule requires owners/operators of most Piper PA‑28 series (excluding PA‑28‑151 s/n 28‑7415001 to 28‑7515459) to inspect the aileron spar and its doubler—especially the curved radii near hinges—for cracks. Inspections must be done each time a new Maintenance Release is issued. It’s a timing update only; cracking can cause aileron failure and loss of control."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-28-16-amdt-2-aileron-spar-cracking","history":"/api/acts/ad-pa-28-16-amdt-2-aileron-spar-cracking/history","analysis":"/api/acts/ad-pa-28-16-amdt-2-aileron-spar-cracking/analysis","conflicts":"/api/acts/ad-pa-28-16-amdt-2-aileron-spar-cracking/conflicts","importantCases":"/api/acts/ad-pa-28-16-amdt-2-aileron-spar-cracking/important-cases","documents":"/api/acts/ad-pa-28-16-amdt-2-aileron-spar-cracking/documents"}}