{"id":"F2006B05446","name":"AD/PA-23/13 - Elevator Push-Pull Tube Rollers - Replacement","slug":"ad-pa-23-13-elevator-push-pull-tube-rollers-replacement","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":46179,"registerId":"commonwealth-F2006B05446-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-23/13 - Elevator Push-Pull Tube Rollers - Replacement","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-23/13 Elevator Push-Pull Tube Rollers - Replacement NK\n\nApplicability: Model PA-23 with S/Nos. 23-1 to 23-903. Document:  1. Piper SB No. 151; or\n\n2. FAA AD 57-5-3.\n\n \n\nCompliance: Forthwith.\n\n \n","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The AD sets a replacement requirement for elevator push–pull tube rollers on PA-23 aircraft with S/N 23-1 to 23-903 and specifies the procedural sources (Piper SB No.151 or FAA AD 57-5-3). The text contains no indication that it expands or narrows an earlier or original scope; it simply prescribes immediate replacement for the listed serial numbers and points to the referenced documents for technical detail. (Applicability; Document; Compliance)"},"complexity_factors":["Narrow, clearly defined applicability by aircraft model and serial-number range (Applicability)","Single required action (replacement of specified component) with immediate compliance time (Compliance)","Procedural detail delegated to two external documents (Piper SB No. 151; FAA AD 57-5-3) — implementers must consult those texts (Document)","Lack of technical detail in the AD itself increases reliance on referenced documents for instructions and parts, adding a coordination step","Operational impact complexity from the “Forthwith” compliance window (scheduling, potential downtime)"],"plain_english_summary":"Requires immediate replacement of the elevator push–pull tube rollers on Piper PA‑23 aeroplanes serial numbers 23‑1 through 23‑903, using the procedures in Piper Service Bulletin No. 151 or FAA AD 57‑5‑3. Owners/operators and maintenance providers must arrange and pay for the work forthwith, potentially causing short‑notice downtime; the technical justification and step‑by‑step instructions are contained in the referenced documents."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive addressing a specific mechanical defect in a specific aircraft model range. It has not expanded beyond its original purpose of mandating elevator roller replacement."},"complexity_factors":["Very short document — approximately 150 words total","Only 2 defined terms (applicability by serial number, compliance timing)","No cross-references to other legislation or regulations beyond the two technical documents","Single, unambiguous compliance action (replacement of specific parts)","No conditional logic, exceptions, or alternative compliance methods specified","Straightforward applicability criteria (specific model range by serial number)"],"plain_english_summary":"**What this is:** This is an Airworthiness Directive (AD) — a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA). Think of it as a \"recall notice\" for aircraft, but legally binding.\n\n**What it requires:** Owners and operators of specific Piper PA-23 Apache and Aztec aeroplanes must replace the \"elevator push-pull tube rollers\" — small mechanical components that help control the up-and-down movement of the aircraft's tail (the elevator). These rollers are part of the system that connects the pilot's control inputs to the actual flight surfaces.\n\n**Who it affects:** Specifically, Piper PA-23 model aircraft with serial numbers 23-1 through 23-903. This covers early production Apache and Aztec twin-engine aircraft.\n\n**When to comply:** \"Forthwith\" means immediately — there's no grace period. This suggests a serious safety risk if not addressed promptly.\n\n**Why it matters:** Faulty elevator rollers could cause loss of control over the aircraft's pitch (nose up/down movement), potentially leading to a crash. The directive references a Piper Service Bulletin and an older FAA directive, indicating this addresses a known design or wear defect.\n\n**Key documents to follow:**\n- Piper Service Bulletin No. 151 (manufacturer's technical instructions)\n- FAA AD 57-5-3 (the original US safety order this Australian directive adopts)"}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-23-13-elevator-push-pull-tube-rollers-replacement","history":"/api/acts/ad-pa-23-13-elevator-push-pull-tube-rollers-replacement/history","analysis":"/api/acts/ad-pa-23-13-elevator-push-pull-tube-rollers-replacement/analysis","conflicts":"/api/acts/ad-pa-23-13-elevator-push-pull-tube-rollers-replacement/conflicts","importantCases":"/api/acts/ad-pa-23-13-elevator-push-pull-tube-rollers-replacement/important-cases","documents":"/api/acts/ad-pa-23-13-elevator-push-pull-tube-rollers-replacement/documents"}}