{"id":"F2006B05491","name":"AD/PA-23/64 - Caution Placard - Flight Director or AFCS Flux Sensor - Installation","slug":"ad-pa-23-64-caution-placard-flight-director-or-afcs-flux-sensor-installation","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":46322,"registerId":"commonwealth-F2006B05491-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-23/64 - Caution Placard - Flight Director or AFCS Flux Sensor - Installation","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-23 (Apache and Aztec) Series Aeroplanes\n\n \n\nAD/PA-23/64 Caution Placard - Flight Director or\n\nAFCS Flux Sensor - Installation\n\n\n7/75\n\n \n\nApplicability: Piper PA23-250 S/Nos. 27-4053, 27-4574 to 27-7405278 fitted with Altimatic V F/D or Altimatic V F/D 1.\n\n \n\nDocument: Piper SB No. 404.\n\n \n\nCompliance: Within 200 hours time in service after 31 July 1974.\n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1684},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This airworthiness directive retains its original limited scope—mandating a specific safety placard for a defined subset of aircraft. There is no evidence of expansion beyond the original technical safety purpose."},"complexity_factors":["Single, straightforward requirement (install a placard)","Narrow applicability limited to specific aircraft serial numbers and equipment configuration","Simple compliance metric (flight hours after a fixed date)","No conditional exceptions or nested legal provisions","Relies on external technical standard (Service Bulletin) rather than embedding complex specifications"],"plain_english_summary":"**What this does:** This directive requires owners of specific Piper Apache and Aztec aircraft to install a warning label (called a \"placard\") in the cockpit.\n\n**Who it affects:** Only applies to specific Piper PA-23-250 aircraft with serial numbers 27-4053, 27-4574 through 27-7405278, and only if they are fitted with Altimatic V Flight Director equipment.\n\n**What must be done:** Install a caution placard regarding the Flight Director or Automatic Flight Control System (AFCS) Flux Sensor, following the instructions in Piper Service Bulletin No. 404.\n\n**When:** The work had to be completed within 200 hours of flight time after 31 July 1974.\n\n**Why it matters:** This ensures pilots are visually warned about potential limitations or operational issues with the aircraft's automatic flight control systems, preventing possible navigation or control errors during flight."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-23-64-caution-placard-flight-director-or-afcs-flux-sensor-installation","history":"/api/acts/ad-pa-23-64-caution-placard-flight-director-or-afcs-flux-sensor-installation/history","analysis":"/api/acts/ad-pa-23-64-caution-placard-flight-director-or-afcs-flux-sensor-installation/analysis","conflicts":"/api/acts/ad-pa-23-64-caution-placard-flight-director-or-afcs-flux-sensor-installation/conflicts","importantCases":"/api/acts/ad-pa-23-64-caution-placard-flight-director-or-afcs-flux-sensor-installation/important-cases","documents":"/api/acts/ad-pa-23-64-caution-placard-flight-director-or-afcs-flux-sensor-installation/documents"}}