{"id":"F2006B10615","name":"AD/HU 269/53 - Fibreglass Tail Rotor Blades - Inspection","slug":"ad-hu-269-53-fibreglass-tail-rotor-blades-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":116493,"registerId":"commonwealth-F2006B10615-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/HU 269/53 - Fibreglass Tail Rotor Blades - 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)  Schweizer (Hughes) 269 Series Helicopters\n\n \n\nAD/HU 269/53 Fibreglass Tail Rotor Blades - Inspection 10/75\n\nApplicability: All Series fitted with fibreglass tail rotor blades P/Nos. 269A6124, 269A6124-9, 269A6035, 269A6035-9, 269A6035-17, 269A6035-19, 269A6035-M, 269ASK15 &\n\n269- 6100.\n\n \n\nDocument: Hughes SIN No. N-130.\n\n \n\nCompliance: As detailed in 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","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":false,"description":"The provided text does not indicate any change in scope from an earlier instrument or intent. The AD, as presented, applies to all Schweizer (Hughes) 269 series helicopters fitted with the listed fibreglass tail rotor blade part numbers and requires compliance with Hughes Service Instruction Note No. N-130. No amendment history or comparison to a prior scope is included in the text, so there is no evidence here of a scope change. (Applicability; Document: Hughes SIN No. N-130; Compliance)"},"complexity_factors":["Delegation of substantive procedures to an external document (Hughes SIN No. N-130) — the AD does not include inspection steps or intervals, requiring operators to obtain and follow the SIN (Document: Hughes SIN No. N-130; Compliance).","Multiple specific part numbers and all series applicability — many blade part numbers are listed, increasing the number of potentially affected aircraft and requiring part-number verification (Applicability).","Regulatory enforcement context — issued under Civil Aviation Regulations Part 39 and the CASA schedule of ADs, which brings regulator-administered compliance rules and potential for case-by-case discretion (Commonwealth of Australia (Civil Aviation Regulations 1998), PART 39 - 105).","Operational impact uncertainty — actual burden depends on the SIN’s inspection intervals and remedial requirements, which are not reproduced in the AD (Compliance).","Record‑keeping and maintenance logistics — implementing inspections across operators’ fleets requires scheduling, parts and labour planning, and possible aircraft downtime (Applicability; Compliance)."],"plain_english_summary":"This AD requires owners/operators of Schweizer (Hughes) 269 series helicopters fitted with specified fibreglass tail‑rotor blade part numbers to perform inspections as detailed in Hughes Service Instruction Note N‑130. Issued under the Civil Aviation Regulations and published by CASA, it affects only aircraft with the listed blades; operators bear inspection and repair costs and must obtain SIN N‑130 for exact procedures, intervals and acceptance criteria."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard Airworthiness Directive with narrow, specific scope targeting particular helicopter models and part numbers. It has not expanded beyond its original safety purpose."},"complexity_factors":["Very short document (approximately 150 words)","No defined terms section","No cross-references to other legislation beyond a single reference to Hughes SIN No. N-130","Simple conditional logic: if your helicopter has these specific part numbers, you must comply","No nested exceptions or complex procedural requirements in the text itself (details deferred to external document)","Single compliance requirement with no alternative methods stated"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** issued by Australia's Civil Aviation Safety Authority (CASA). It mandates safety inspections for specific Schweizer (formerly Hughes) 269 series helicopters.\n\n**What it does:**\n- Requires owners and operators to inspect the **fibreglass tail rotor blades** on certain helicopter models\n- Applies to blades with specific part numbers (P/Nos) listed in the document\n- References a Hughes Service Information Notice (SIN No. N-130) for the exact inspection procedures\n\n**Who it affects:**\n- Owners and operators of Schweizer/Hughes 269 series helicopters fitted with the specified fibreglass tail rotor blades\n- Maintenance organisations servicing these aircraft\n\n**Why it matters:**\nTail rotor blade failures can cause catastrophic accidents. This directive ensures potentially defective or worn fibreglass blades are identified before they fail in flight. Compliance is **mandatory** under civil aviation law — aircraft cannot legally fly until the inspection is completed as specified."}},"importantCases":[],"_links":{"self":"/api/acts/ad-hu-269-53-fibreglass-tail-rotor-blades-inspection","history":"/api/acts/ad-hu-269-53-fibreglass-tail-rotor-blades-inspection/history","analysis":"/api/acts/ad-hu-269-53-fibreglass-tail-rotor-blades-inspection/analysis","conflicts":"/api/acts/ad-hu-269-53-fibreglass-tail-rotor-blades-inspection/conflicts","importantCases":"/api/acts/ad-hu-269-53-fibreglass-tail-rotor-blades-inspection/important-cases","documents":"/api/acts/ad-hu-269-53-fibreglass-tail-rotor-blades-inspection/documents"}}