{"id":"F2006B11337","name":"AD/MU-2/1 - Lagging of Engine Air Bleed Pipes - Modification","slug":"ad-mu-2-1-lagging-of-engine-air-bleed-pipes-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":57218,"registerId":"commonwealth-F2006B11337-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/MU-2/1 - Lagging of Engine Air Bleed Pipes - Modification","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)  Mitsubishi MU-2 Series Aeroplanes\n\n \n\nAD/MU-2/1 Lagging of Engine Air Bleed Pipes - Modification 7/69\n\nApplicability: All models.\n\n \n\nDocument: Mitsubishi SB No. 070. Compliance: Before 7 September 1967.\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 from 1969 (as indicated by the '7/69' suffix). It addresses one specific technical modification and shows no evidence of scope creep. The document appears complete and unaltered from its original purpose."},"complexity_factors":["Extremely short document (under 150 words)","No defined terms section","No cross-references to other legislation beyond the parent Civil Aviation Regulations 1998","Single, unambiguous compliance requirement with clear deadline","No conditional logic or exceptions","Simple structure: applicability → document reference → compliance deadline"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety order — issued by Australia's Civil Aviation Safety Authority (CASA) for **Mitsubishi MU-2 series aeroplanes**.\n\n**What it requires:**\n- Aircraft owners/operators must **modify the lagging (insulation/wrapping) around engine air bleed pipes**\n- This modification must be done according to **Mitsubishi Service Bulletin No. 070**\n- **Deadline:** Before 7 September 1967\n\n**Who it affects:**\n- Anyone who owns, operates, or maintains **any model of Mitsubishi MU-2 aircraft** registered in Australia\n\n**Why it matters:**\n- Engine air bleed pipes carry hot, pressurised air. Faulty or inadequate lagging could lead to overheating, fire, or system failure. This directive ensures a specific safety modification is made to prevent potential accidents.\n\n**Key point:** This is a **mandatory compliance** item — you cannot legally fly the aircraft after the deadline without completing this modification."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The instrument, as supplied, applies to all Mitsubishi MU-2 models and mandates the same technical modification via Mitsubishi SB No. 070 by a stated deadline. The source contains no material indicating that the scope (who is covered or what must be done) has been altered from an earlier or original intent. Note: the text shows a dating inconsistency (AD identifier includes '7/69' while the compliance date is 'Before 7 September 1967'); the supplied document does not explain this inconsistency, but there is no explicit evidence in the text that the substantive scope (applicability or required modification) was changed."},"complexity_factors":["Single, specific required action (modification of engine air bleed pipes)","Clear applicability statement: 'All models.'","Reference to an external technical document (Mitsubishi SB No. 070) for procedural detail","Fixed compliance deadline (creates a binary before/after compliance obligation)","Concise text with no multiple conditions, exceptions or procedural steps in the AD itself","Internal inconsistency in dates (AD label '7/69' vs compliance 'Before 7 September 1967') which could complicate interpretation"],"plain_english_summary":"This AD requires all Mitsubishi MU-2 aeroplanes to have the engine air bleed pipes lagged (insulated/wrapped) in accordance with Mitsubishi Service Bulletin No. 070, with compliance required before 7 September 1967. It applies to all owners/operators of MU-2s and is issued by CASA; the short text mandates the modification but gives no rationale, cost, or certification details."}},"importantCases":[],"_links":{"self":"/api/acts/ad-mu-2-1-lagging-of-engine-air-bleed-pipes-modification","history":"/api/acts/ad-mu-2-1-lagging-of-engine-air-bleed-pipes-modification/history","analysis":"/api/acts/ad-mu-2-1-lagging-of-engine-air-bleed-pipes-modification/analysis","conflicts":"/api/acts/ad-mu-2-1-lagging-of-engine-air-bleed-pipes-modification/conflicts","importantCases":"/api/acts/ad-mu-2-1-lagging-of-engine-air-bleed-pipes-modification/important-cases","documents":"/api/acts/ad-mu-2-1-lagging-of-engine-air-bleed-pipes-modification/documents"}}