{"id":"F2006B06545","name":"AD/RB211/15 - IP Compressor Stage 6-7 Rotor Shaft Life","slug":"ad-rb211-15-ip-compressor-stage-6-7-rotor-shaft-life","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":48247,"registerId":"commonwealth-F2006B06545-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/RB211/15 - IP Compressor Stage 6-7 Rotor Shaft Life","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 - 106 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Rolls Royce Turbine Engines - RB211 Series\n\n \n\nAD/RB211/15 IP Compressor Stage 6-7 Rotor Shaft Life 10/95\n\nRequirement: CANCELLED.\n\n \n\nBackground: The requirements of this Directive are now reflected in the Rolls Royce RB211 Time Limits Manual, chapter 5-10-01 and CAO 106, AD/ENG/7 refers.\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\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This is a cancellation instrument that formally terminates an earlier directive. It has no active scope; it merely redirects operators to existing alternative documentation. The original scope (regulating rotor shaft life limits) has not expanded but rather been transferred to other instruments."},"complexity_factors":["Document is only 4 substantive lines long","Single operative provision: 'CANCELLED'","No defined terms, cross-references, or conditional logic within the directive itself","Background section contains only a simple pointer to replacement documentation","No substantive legal obligations remain in force"],"plain_english_summary":"This is a **cancelled airworthiness directive** for Rolls-Royce RB211 jet engines. It used to set rules about how long a specific part—the \"IP Compressor Stage 6-7 Rotor Shaft\"—could safely operate before needing replacement or inspection. \n\n**What it does now:** Nothing. The directive has been cancelled because its safety requirements have been moved into two other documents: the manufacturer's official manual (Rolls-Royce RB211 Time Limits Manual) and another aviation regulation (CAO 106, referenced via AD/ENG/7).\n\n**Who it affects:** Airlines and maintenance crews operating aircraft with Rolls-Royce RB211 engines—though they now follow the replacement rules in the manual instead of this directive.\n\n**Why it matters:** This shows how aviation safety rules get updated. Rather than having overlapping regulations, old directives are cancelled when their requirements are absorbed into standard manufacturer documentation. This reduces paperwork while keeping the same safety standards."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":true,"description":"The AD’s direct scope has been changed: the standalone airworthiness directive for RB211 IP compressor stage 6-7 rotor shaft life has been cancelled (\"Requirement: CANCELLED.\") and its substantive requirements are stated to be reflected instead in the Rolls Royce RB211 Time Limits Manual (chapter 5-10-01) and in CAO 106 (referencing AD/ENG/7). Mechanically, the regulatory source of the rotor-shaft life requirements moves from this AD entry to those referenced documents."},"complexity_factors":["Short, single-action instrument (cancellation) with no technical detail","Cross-references to external documents (Rolls Royce RB211 Time Limits Manual chapter 5-10-01 and CAO 106, AD/ENG/7) meaning users must consult other sources","Lack of transitional or implementation detail in the AD itself creates practical complexity for compliance","Regulatory provenance is clear (CASA AD schedule), so legal authority is straightforward despite cross-references"],"plain_english_summary":"This AD entry has been cancelled and no longer carries its own rotor‑shaft life‑limit requirements. Instead it directs operators and maintainers to the Rolls‑Royce RB211 Time Limits Manual (ch. 5‑10‑01) and CAO 106 (see AD/ENG/7) for the operative limits and obligations.\n\nThat matters because compliance responsibility remains with operators and maintenance organisations, but the authoritative rules now live in the manufacturer manual and CAO reference rather than this standalone AD."}},"importantCases":[],"_links":{"self":"/api/acts/ad-rb211-15-ip-compressor-stage-6-7-rotor-shaft-life","history":"/api/acts/ad-rb211-15-ip-compressor-stage-6-7-rotor-shaft-life/history","analysis":"/api/acts/ad-rb211-15-ip-compressor-stage-6-7-rotor-shaft-life/analysis","conflicts":"/api/acts/ad-rb211-15-ip-compressor-stage-6-7-rotor-shaft-life/conflicts","importantCases":"/api/acts/ad-rb211-15-ip-compressor-stage-6-7-rotor-shaft-life/important-cases","documents":"/api/acts/ad-rb211-15-ip-compressor-stage-6-7-rotor-shaft-life/documents"}}