{"id":"F2006B06559","name":"AD/RB211/29 Amdt 1 - LP Compressor Blades","slug":"ad-rb211-29-amdt-1-lp-compressor-blades","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":48300,"registerId":"commonwealth-F2006B06559-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/RB211/29 Amdt 1 - LP Compressor Blades","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 106 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \n\nAIRWORTHINESS DIRECTIVE\n\n![](image.001.png)\n\n![](image.001.png)  \nFor the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/RB211/29 and issues the following AD under subregulation 39.1 (1) of CAR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.\n\nRolls Royce Turbine Engines \\- RB211 Series\n\nAD/RB211/29\n\nAmdt 1\n\n  \nLP Compressor Blades 9/2002\n\nApplicability: Rolls Royce RB211-524 Series engines listed in the requirement document.\n\nRequirement: Remove and inspect applicable fan blades in accordance with the procedures outlined in Rolls Royce Mandatory SB RB.211-72-D184 Rev 2.\n\nNote: UK CAA AD 005-04-2001 refers.\n\nCompliance: As detailed in the requirement document.\n\nThis Airworthiness Directive becomes effective on 5 September 2002.\n\nBackground: This Directive has been issued to require the removal and inspection of certain serial numbers fan blades suspected of being damaged during a repair process. The damage has been assessed to reduce blade durability.\n\nAmendment 1 of this directive includes additional affected blade serial numbers and introduces a calendar time limit for compliance.\n\nOriginal issue of this directive became effective on 4 October 2001.\n\n![Signature of Eugene Paul Holzapfel Delegate of the Civil Aviation Safety Authority](image.002.png)  \n\nEugene Paul Holzapfel\n\nDelegate of the Civil Aviation Safety Authority 29 July 2002\n\n![](image.001.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 14 August 2002.\n\n  \nPage 1 of 1","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"Amendment 1 broadened the population subject to the AD by adding further blade serial numbers and imposed a calendar time limit for compliance, thereby changing both who must act and the timing for action compared with the original directive (Background / Requirement / Compliance)."},"complexity_factors":["Narrow, technical applicability — targets Rolls‑Royce RB211‑524 engines and specific fan‑blade serial numbers (Applicability / Background).","Dependence on external technical document — compliance requires following Rolls‑Royce Mandatory SB RB.211‑72‑D184 Rev 2 (Requirement).","Amendment adds calendar compliance deadline — introduces scheduling and operational planning requirements for operators (Compliance / Background).","Revocation and replacement of prior AD — requires operators to track AD versions and revocation history (opening paragraph).","Enforcement and discretion concentrated with CASA delegate — legal authority rests with the delegate under CAR subregulation 39.1(1) (introductory text).","Potential direct cost and operational disruption for operators — removal/inspection/repair work and aircraft downtime (Requirement / Background).","Cross‑reference to overseas regulator — note to UK CAA AD implies international coordination for affected operators (Note)."],"plain_english_summary":"*AD/RB211/29 Amdt 1* requires operators of Rolls‑Royce RB211‑524 engines with certain fan‑blade serial numbers to remove and inspect those LP compressor (fan) blades following Rolls‑Royce Mandatory Service Bulletin RB.211‑72‑D184 Rev 2. Amendment 1 adds additional affected serial numbers and introduces a calendar deadline for compliance.\n\nAircraft operators pay for removals, inspections and any repairs; the Civil Aviation Safety Authority delegate issues and enforces the AD; operators must follow the service bulletin procedures and meet the stated timeframe."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This amendment stays within the original scope of addressing damaged LP compressor blades. It expands the list of affected parts and adds a compliance deadline, but does not broaden the directive to address unrelated safety issues or engine systems."},"complexity_factors":["Single-page document with minimal text","Only 4 defined structural sections (Applicability, Requirement, Compliance, Background)","No nested conditional logic — simple 'if your engine is on the list, do this inspection' structure","Cross-references only to external technical documents (Rolls-Royce Service Bulletin and UK CAA AD), not to other legislation","No interpretation section or defined terms","Straightforward amendment structure — clearly identifies what changed from previous version"],"plain_english_summary":"This AD revokes and replaces a prior safety order to require inspection of certain fan blades on Rolls‑Royce RB211‑524 engines after damage during repair led to premature wear. It expands the list of affected blade serial numbers and adds a calendar deadline for inspections. Operators of RB211‑524‑equipped aircraft must follow Rolls‑Royce inspection procedures to remove suspect blades and prevent in‑flight engine damage or shutdown."},"flash_summary_failed":{"failed":true,"reason":"A positive credit balance is required for all requests, including BYOK, so fallback providers remain available. Add credits at https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Fmodal%3Dtop-up to continue.","source":"analysis-cron"}},"importantCases":[],"_links":{"self":"/api/acts/ad-rb211-29-amdt-1-lp-compressor-blades","history":"/api/acts/ad-rb211-29-amdt-1-lp-compressor-blades/history","analysis":"/api/acts/ad-rb211-29-amdt-1-lp-compressor-blades/analysis","conflicts":"/api/acts/ad-rb211-29-amdt-1-lp-compressor-blades/conflicts","importantCases":"/api/acts/ad-rb211-29-amdt-1-lp-compressor-blades/important-cases","documents":"/api/acts/ad-rb211-29-amdt-1-lp-compressor-blades/documents"}}