{"id":"F2006B10980","name":"AD/JT8D/2 - Inlet Case Sleeve Strainer Element","slug":"ad-jt8d-2-inlet-case-sleeve-strainer-element","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":56564,"registerId":"commonwealth-F2006B10980-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/JT8D/2 - Inlet Case Sleeve Strainer Element","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)  Pratt and Whitney Turbine Engines - JT8D Series\n\n \n\nAD/JT8D/2 Inlet Case Sleeve Strainer Element 5/66\n\nApplicability: JT8D-1 series prior to S/No. P653317B. P653323F and P653326D. Document:  1. Pratt & Whitney TE SB No. 1091; or\n\n2. AD/PW-T/11.\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, single-issue airworthiness directive focused on one specific mechanical component in specific engine serial numbers. It represents the original and continuing purpose of ADs: targeted safety interventions for identified technical defects. There is no evidence of scope creep or expansion beyond the original technical safety issue."},"complexity_factors":["Extremely short document (approximately 150 words)","Only 3 defined applicability criteria (specific engine serial numbers)","Simple binary compliance path (two alternative documents referenced)","No nested conditions, exceptions, or cross-references to other legislation","Single technical subject matter with no subsections or parts","No interpretative provisions or defined terms section"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** issued by Australia's Civil Aviation Safety Authority (CASA) under the Civil Aviation Regulations 1998. It applies to specific Pratt & Whitney JT8D-1 series jet engines.\n\n**What it does:**\nThis directive mandates a safety fix for a specific part called the \"Inlet Case Sleeve Strainer Element\" in these engines. Airworthiness Directives are legally binding orders that require aircraft owners or operators to take specific actions to correct unsafe conditions in aircraft or engines.\n\n**Who it affects:**\n- Owners and operators of aircraft powered by JT8D-1 series engines with serial numbers **before** P653317B, P653323F, and P653326D\n- Maintenance organisations servicing these specific engines\n\n**Why it matters:**\nThe strainer element is a critical component that filters debris from entering the engine. If this part fails or is defective, it could lead to engine damage, power loss, or failure during flight. This AD ensures that affected engines are inspected or modified according to Pratt & Whitney's Service Bulletin No. 1091 to prevent potential safety incidents.\n\n**Compliance:**\nOperators must follow the technical instructions in either:\n- Pratt & Whitney Turbine Engine Service Bulletin No. 1091, **or**\n- An earlier related directive AD/PW-T/11"},"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":false,"description":"The supplied AD text specifies applicability and references the documents that prescribe the corrective actions. It contains no indication that the scope has been altered from an original intent; the directive targets JT8D-1 series engines earlier than the listed serial numbers and directs readers to Pratt & Whitney TE SB No. 1091 or AD/PW-T/11 for the required work (Applicability; Document)."},"complexity_factors":["Applicability determined by specific engine serial numbers (JT8D-1 series prior to S/No. P653317B, P653323F and P653326D) — requires record checks to determine whether an engine is affected (Applicability).","Key operational requirements are not included in the AD text and are instead contained in external documents (Pratt & Whitney TE SB No. 1091 or AD/PW-T/11) — operators must obtain and follow those documents (Document).","Regulatory compliance depends on locating and interpreting technical service literature, creating potential for variation in implementation times and costs (Document).","Limited procedural detail in the AD increases reliance on manufacturer instructions and on interactions with the regulator for clarifications or approvals.","Potential operational impacts (maintenance scheduling, parts supply, certified personnel) are context-dependent and not quantified in the AD text."],"plain_english_summary":"This AD from the Civil Aviation Safety Authority concerns the inlet case sleeve strainer element on certain Pratt & Whitney JT8D‑1 engines and makes compliance mandatory for affected operators.  \n\nThe AD does not include the required inspections or repairs itself: operators must obtain and follow Pratt & Whitney TE Service Bulletin No. 1091 or AD/PW‑T/11, and will bear the associated costs, downtime and procedural steps to comply."}},"importantCases":[],"_links":{"self":"/api/acts/ad-jt8d-2-inlet-case-sleeve-strainer-element","history":"/api/acts/ad-jt8d-2-inlet-case-sleeve-strainer-element/history","analysis":"/api/acts/ad-jt8d-2-inlet-case-sleeve-strainer-element/analysis","conflicts":"/api/acts/ad-jt8d-2-inlet-case-sleeve-strainer-element/conflicts","importantCases":"/api/acts/ad-jt8d-2-inlet-case-sleeve-strainer-element/important-cases","documents":"/api/acts/ad-jt8d-2-inlet-case-sleeve-strainer-element/documents"}}