{"id":"F2006B05339","name":"AD/P68/12 - Propeller Control Rod End - Inspection and Replacement","slug":"ad-p68-12-propeller-control-rod-end-inspection-and-replacement","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":45831,"registerId":"commonwealth-F2006B05339-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/P68/12 - Propeller Control Rod End - Inspection and 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)  Partenavia P68 Series Aeroplanes\n\n \n\n# AD/P68/12 Propeller Control Rod End - Inspection\n\nand Replacement Applicability:  All models P68 and P68B with S/Nos. below 160. Document:              Partenavia SB No. 37, Revision 1.\n\n# 11/78\n\nCompliance: Within 50 hours time in service after 17 October 1978 and thereafter at intervals not exceeding 50 hours time in service until Part 2 of Partenavia SB No. 37, Revision 1 is completed.\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\n \n\n \n","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The text as provided sets an initial inspection and recurring 50-hour inspection cycle for P68/P68B aircraft with S/Ns below 160 and ties procedural detail to Partenavia SB No. 37, Revision 1. There is no indication in the provided text that the scope has been altered from its stated applicability and compliance requirements."},"complexity_factors":["Limited and specific applicability by model and serial-number cutoff (P68 and P68B with S/Ns below 160).","Short, recurring compliance interval (every 50 hours time in service) until a manufacturer action (Part 2 of the Service Bulletin) is completed.","Dependence on an external document (Partenavia SB No. 37, Revision 1) for procedural detail and for the condition that ends recurring inspections.","Ambiguity in termination condition: recurring inspections continue until the SB Part 2 is completed, creating operational uncertainty until that event occurs.","Implicit requirement to replace parts when indicated, but the AD text does not provide technical replacement criteria in-line; operators must consult the referenced Service Bulletin."],"plain_english_summary":"This AD requires owners/operators of Partenavia P68 and P68B aircraft with serial numbers below 160 to inspect the propeller control rod end within 50 hours TIS from 17 Oct 1978 and repeat every 50 hours until Part 2 of Partenavia Service Bulletin No. 37, Rev.1 is completed. Maintenance organisations must carry out replacements as indicated, following the Service Bulletin’s procedures, creating a recurring maintenance burden and dependence on the SB to terminate the inspections."},"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 specific aircraft. It has not expanded beyond its original purpose of ensuring propeller control rod end integrity in early-model Partenavia P68 aircraft."},"complexity_factors":["Single, specific mechanical component addressed (propeller control rod end)","Clear applicability criteria (two specific models, serial number cutoff)","Simple compliance timeline (50 hours recurring)","Only one cross-reference (to Partenavia Service Bulletin No. 37)","No defined terms section, no conditional logic, no nested exceptions","Document is extremely short (approximately 150 words of substantive content)"],"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 **Partenavia P68 aircraft** (models P68 and P68B with serial numbers below 160).\n\n**What it requires:**\n- **Inspection and replacement** of the **propeller control rod end** — a mechanical component that connects the pilot's throttle controls to the propeller mechanism.\n- **When:** Aircraft operators must complete the first inspection within **50 hours of flying time** after 17 October 1978, then repeat it every **50 hours of flying time** thereafter.\n- **Until when:** These repeated inspections continue until **Part 2 of Partenavia Service Bulletin No. 37, Revision 1** is completed (this likely refers to a permanent modification or replacement program).\n\n**Why it matters:**\nThis directive addresses a potential safety defect in the propeller control system. If the rod end fails, the pilot could lose control of the propeller pitch (the angle of the blades), potentially leading to engine overspeed, loss of power, or loss of aircraft control. The repetitive inspection requirement ensures the defect is caught before it causes an accident, while the reference to \"Part 2\" suggests a permanent fix was being developed.\n\n**Who must comply:**\nOwners and operators of affected Partenavia P68 aircraft registered in Australia. Non-compliance means the aircraft cannot legally fly."}},"importantCases":[],"_links":{"self":"/api/acts/ad-p68-12-propeller-control-rod-end-inspection-and-replacement","history":"/api/acts/ad-p68-12-propeller-control-rod-end-inspection-and-replacement/history","analysis":"/api/acts/ad-p68-12-propeller-control-rod-end-inspection-and-replacement/analysis","conflicts":"/api/acts/ad-p68-12-propeller-control-rod-end-inspection-and-replacement/conflicts","importantCases":"/api/acts/ad-p68-12-propeller-control-rod-end-inspection-and-replacement/important-cases","documents":"/api/acts/ad-p68-12-propeller-control-rod-end-inspection-and-replacement/documents"}}