{"id":"F2006B06122","name":"AD/PC-6/2 - Propeller Pitch Control - Inspection","slug":"ad-pc-6-2-propeller-pitch-control-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":46889,"registerId":"commonwealth-F2006B06122-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PC-6/2 - Propeller Pitch Control - 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)  Pilatus Porter PC-6 Series Aeroplanes\n\n \n\nAD/PC-6/2 Propeller Pitch Control - Inspection 3/66\n\nApplicability: All models PC-6/A and Pc-6/A-H2. Document:  Pilatus SB No. 45.\n\nCompliance: As detailed in the requirement document.\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\n \n\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive focused on a specific mechanical inspection for two aircraft models. It has not expanded beyond its original purpose."},"complexity_factors":["Extremely short document (approximately 100 words of substantive content)","No defined terms section — relies entirely on external reference to Pilatus Service Bulletin No. 45","No conditional logic or nested exceptions","Simple applicability clause (two specific aircraft models)","Single compliance requirement (follow the service bulletin)","No cross-references to other legislation beyond the enabling Civil Aviation Regulations 1998"],"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) under the Civil Aviation Regulations 1998.\n\n**What it does:** It requires owners and operators of specific Pilatus Porter aircraft (models PC-6/A and PC-6/A-H2) to inspect their **propeller pitch control systems**. The propeller pitch control adjusts the angle of the propeller blades, which affects thrust and engine performance. If this system fails, the pilot could lose control of the aircraft's power settings.\n\n**Who must comply:** Anyone who owns or operates the affected Pilatus Porter aircraft models in Australia.\n\n**How to comply:** Operators must follow the instructions in **Pilatus Service Bulletin No. 45** — a technical document from the aircraft manufacturer detailing exactly what to inspect and how.\n\n**Why it matters:** Airworthiness Directives are legally binding safety requirements. Failing to comply means the aircraft cannot legally fly. This particular directive addresses a potential defect in the propeller pitch control that could compromise flight safety."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The supplied AD text does not indicate any change from an earlier scope or intent. It simply: (1) identifies the affected models (\"Applicability: All models PC-6/A and Pc-6/A-H2.\"), (2) points to Pilatus SB No. 45 as the required document (\"Document: Pilatus SB No. 45.\"), and (3) requires compliance as set out in that document (\"Compliance: As detailed in the requirement document.\"). No information in the provided text shows an expansion or narrowing of scope relative to an earlier instrument."},"complexity_factors":["Narrow technical scope — applies only to propeller pitch control inspections for two specific aircraft models (Applicability line).","Minimal procedural detail in the AD itself — the AD delegates procedural specifics to Pilatus SB No. 45 (Document line), increasing reliance on an external document.","Regulatory bindingness — it converts a manufacturer instruction into a mandatory requirement under the airworthiness directive framework (header: Commonwealth/Part 39).","Enforcement and compliance responsibility rest with operators and maintenance providers (implicit from Compliance line), creating operational and cost implications not detailed in the AD.","Potential ambiguity for readers because timing, exact inspection steps and corrective actions are not stated in the supplied AD text (Compliance line references requirement document instead)."],"plain_english_summary":"This Civil Aviation Safety Authority AD mandates inspections of the propeller pitch control on Pilatus Porter PC‑6/A and PC‑6/A‑H2 aircraft. Operators/owners and maintenance organisations must comply by following the procedures, timing and corrective actions specified in Pilatus SB No. 45; operators arrange and bear the cost of the required inspections and any repairs."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pc-6-2-propeller-pitch-control-inspection","history":"/api/acts/ad-pc-6-2-propeller-pitch-control-inspection/history","analysis":"/api/acts/ad-pc-6-2-propeller-pitch-control-inspection/analysis","conflicts":"/api/acts/ad-pc-6-2-propeller-pitch-control-inspection/conflicts","importantCases":"/api/acts/ad-pc-6-2-propeller-pitch-control-inspection/important-cases","documents":"/api/acts/ad-pc-6-2-propeller-pitch-control-inspection/documents"}}