{"id":"F2006B05501","name":"AD/PA-23/74 - Stabilator Trim Control Rod to Tab Attachment - Inspection","slug":"ad-pa-23-74-stabilator-trim-control-rod-to-tab-attachment-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":46347,"registerId":"commonwealth-F2006B05501-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-23/74 - Stabilator Trim Control Rod to Tab Attachment - Inspection","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-23/74 Stabilator Trim Control Rod to Tab Attachment - Inspection\n\n\n4/78\n\n \n\nApplicability: All model PA23-250(6) place Aztec “F” with S/Nos. 27-7754118, 27-7754129,\n\n27-7754130, 27-7754132, 27-7754137, 27-7754145 to 27-7754152, 27-7754154 to\n\n27-7754156, 27-7754158 to 27-7854007, 27-7854009 to 27-7854813, 27-7854015\n\nto 27-7854017, 27-7854019 to 27-7854023, 27-7854025 to 27-7854029,\n\n27-7854031 to 27-7854033, 27-7854035, 27-7854037 and 27-7854038.\n\n \n\nDocument: Piper SB No. 590.\n\n \n\nCompliance: Within 100 hours time in service after 30 April 1978.\n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1245},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This directive remains precisely targeted at the specific mechanical inspection identified in its title. It applies only to the listed serial numbers of the PA-23-250 Aztec F model and mandates only the inspection specified in the referenced service bulletin."},"complexity_factors":["Single, specific compliance action (one inspection only)","Limited to specific aircraft serial numbers (24 discrete ranges/individual numbers listed)","References one external technical document (Piper SB No. 590) without reproducing its content","Simple time-based compliance trigger (100 hours time in service after a fixed date)"],"plain_english_summary":"**What this is:** A mandatory safety inspection rule (called an Airworthiness Directive) issued by the Civil Aviation Safety Authority for specific Piper aircraft.\n\n**Who it affects:** Owners and operators of Piper PA-23-250 Aztec \"F\" model aircraft with specific serial numbers (listed in the document—including ranges like 27-7754145 to 27-7754152 and others).\n\n**What it requires:** You must inspect the **stabilator trim control rod to tab attachment** (a connection in the tail section that helps control the aircraft's pitch) following the procedures in Piper Service Bulletin No. 590.\n\n**When:** Complete the inspection within 100 hours of flight time after 30 April 1978.\n\n**Why it matters:** This prevents potential failure of the trim control mechanism, which could affect the pilot's ability to control the aircraft's altitude safely."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-23-74-stabilator-trim-control-rod-to-tab-attachment-inspection","history":"/api/acts/ad-pa-23-74-stabilator-trim-control-rod-to-tab-attachment-inspection/history","analysis":"/api/acts/ad-pa-23-74-stabilator-trim-control-rod-to-tab-attachment-inspection/analysis","conflicts":"/api/acts/ad-pa-23-74-stabilator-trim-control-rod-to-tab-attachment-inspection/conflicts","importantCases":"/api/acts/ad-pa-23-74-stabilator-trim-control-rod-to-tab-attachment-inspection/important-cases","documents":"/api/acts/ad-pa-23-74-stabilator-trim-control-rod-to-tab-attachment-inspection/documents"}}