{"id":"F2006B05456","name":"AD/PA-23/25 - Starter Solenoid Circuit Protector","slug":"ad-pa-23-25-starter-solenoid-circuit-protector","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":46211,"registerId":"commonwealth-F2006B05456-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-23/25 - Starter Solenoid Circuit Protector","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-23/25 Starter Solenoid Circuit Protector 6/61\n\nApplicability: Models PA-23 and PA-23-160 with S/Nos. 23-747 to 23-1534. Document:  1. Piper SB No. 175; or\n\n2. FAA AD 60-3-7.\n\n \n\nCompliance: Before 30 September 1961.\n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, single-issue safety directive from 1961. It addresses one specific electrical safety concern on specific aircraft models. There is no evidence of scope creep — it does exactly what it says on the tin."},"complexity_factors":["Very short document (under 150 words)","Only 2 defined applicability criteria (model numbers and serial number range)","Single compliance action with clear deadline","No nested exceptions or conditional logic","References only 2 external technical documents","No interpretation section or defined terms"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA). It applies to specific **Piper PA-23 Apache and Aztec aircraft** (serial numbers 23-747 through 23-1534).\n\n**What it requires:**\n- Aircraft owners/operators must install a **circuit protector** (like a fuse or circuit breaker) on the **starter solenoid circuit** — the electrical path that engages the aircraft's starter motor.\n\n**Why it matters:**\n- Without this protection, a fault in the starter solenoid circuit could cause **electrical fire or damage**. The directive mandates a fix to prevent this hazard.\n\n**Compliance deadline:**\n- The work had to be completed **before 30 September 1961**.\n\n**How to comply:**\n- Follow either **Piper Service Bulletin No. 175** or **FAA Airworthiness Directive 60-3-7** (the US equivalent safety order).\n\nThis is a **historical directive** — it applied to aircraft manufactured in the late 1950s/early 1960s and had a compliance deadline over 60 years ago."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The document itself specifies a narrow, time-limited requirement for the listed PA-23 series serial numbers to comply with a starter solenoid circuit protection measure by following one of two named technical documents before 30 September 1961. The text contains no indication that the directive’s scope was altered from an earlier or different intent."},"complexity_factors":["Narrow, specific applicability by model and serial number (reduces scope complexity).","Requirement refers to external technical documents (Piper SB No.175 or FAA AD 60-3-7), which shifts substantive technical detail outside the directive.","Fixed compliance deadline creates administrative scheduling complexity for affected operators.","Regulatory enforcement context (issued under Civil Aviation Regulations Part 39-105) requires formal compliance and recordkeeping.","No alternative compliance paths or discretion provided in the text (procedural simplicity but limited flexibility)."],"plain_english_summary":"This directive requires owners/operators of Piper PA‑23 and PA‑23‑160 aeroplanes (S/N 23‑747 through 23‑1534) to install or verify a starter solenoid circuit protector by following either Piper Service Bulletin No. 175 or FAA AD 60‑3‑7. Compliance, at the owner’s expense, must be completed before 30 September 1961 and is enforced by the Civil Aviation Safety Authority."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-23-25-starter-solenoid-circuit-protector","history":"/api/acts/ad-pa-23-25-starter-solenoid-circuit-protector/history","analysis":"/api/acts/ad-pa-23-25-starter-solenoid-circuit-protector/analysis","conflicts":"/api/acts/ad-pa-23-25-starter-solenoid-circuit-protector/conflicts","importantCases":"/api/acts/ad-pa-23-25-starter-solenoid-circuit-protector/important-cases","documents":"/api/acts/ad-pa-23-25-starter-solenoid-circuit-protector/documents"}}