{"id":"F2006B09529","name":"AD/EMY/11 - Patten/Pan Avion Inflatable Escape Slides - Modification","slug":"ad-emy-11-patten-pan-avion-inflatable-escape-slides-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":54138,"registerId":"commonwealth-F2006B09529-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/EMY/11 - Patten/Pan Avion Inflatable Escape Slides - 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 - 107 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Emergency Equipment\n\n \n\nAD/EMY/11  Patten/Pan Avion Inflatable Escape Slides - Modification\n\n\n10/75\n\n \n\nApplicability: All Pan Avion and Patten/Pan Avion Evacuation Slides Models LSR-174( ) and LSR- 174(2) with S/Nos. 473 to 524.\n\n \n\nRequirement: To prevent loss of pressure in the evacuation slide inflation system, replace the Patten/Pan Avion inflation hoses P/Nos. 1500-1A on model LSR-174( ) and 1600-19 on LSR-174(2) with inflation hoses P/Nos. 1500-54 on model LSR-174( ) and 1600- 23 on model LSR-174(2) in accordance with Patten/Pan Avion SB 27-75.\n\n \n\nor FAA AD 75-16-23, Amendment 39-2295.\n\n \n\nCompliance: Within 500 hours time in service after 31 October 1975.\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":3,"scope_assessment":{"changed":false,"description":"The directive’s scope remains a targeted technical requirement: replace specified inflation hoses on Patten/Pan Avion LSR-174( ) and LSR-174(2) slides with serial numbers 473–524 to prevent loss of inflation pressure. The AD prescribes exact part-number changes and cites the manufacturer service bulletin or an FAA AD for the method, with a clear compliance deadline (Applicability, Requirement, Compliance). There is no indication within the provided text that the scope differs from that stated purpose."},"complexity_factors":["Narrow, technical scope limited to specific slide models and serial numbers (Applicability)","Explicit part-number replacements required (Requirement)","Cross-reference to an external manufacturer service bulletin or an FAA AD as the procedural standard (Requirement)","A time-in-service compliance metric tied to a historical date, which affects scheduling (Compliance)","No enforcement, penalty, or verification procedures stated in the text, leaving implementation and oversight details to broader regulatory processes (header / absence of text)"],"plain_english_summary":"The Civil Aviation Safety Authority directive mandates replacing inflation hoses on specific Patten/Pan Avion evacuation slides (LSR-174( ) and LSR-174(2), S/N 473–524) with the specified P/Ns, done per Patten/Pan Avion Service Bulletin SB 27-75 or FAA AD 75-16-23 within 500 hours TIS of 31 Oct 1975.\n\nIt affects aircraft owners/operators (who will arrange and likely pay for parts and labour) to prevent loss of slide inflation pressure and the associated safety risk and downtime."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive addressing a specific mechanical defect in specific equipment. It has not expanded beyond its original purpose of mandating a hose replacement to prevent slide inflation failures."},"complexity_factors":["Single, specific technical requirement with no conditional logic","Only 2 model variants and 2 part numbers affected","Clear, single compliance pathway (replace hoses per manufacturer's instructions)","No cross-references to other legislation beyond optional alternative FAA standard","Simple deadline calculation (500 hours after fixed date)","No defined terms section or interpretive provisions"],"plain_english_summary":"**What this is:** This is an **Airworthiness Directive (AD)** — a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA). Think of it like a compulsory recall notice, but for aircraft parts rather than cars.\n\n**What it does:** It orders airlines and aircraft operators to replace specific inflation hoses on emergency evacuation slides made by Patten/Pan Avion. The old hoses (part numbers 1500-1A and 1600-19) must be swapped for new, improved hoses (part numbers 1500-54 and 1600-23).\n\n**Why it matters:** The old hoses could fail and cause the emergency slide to lose pressure. If this happened during an emergency evacuation, the slide might not inflate properly — potentially trapping passengers inside a burning or damaged aircraft.\n\n**Who must comply:** Anyone operating aircraft with these specific slide models (LSR-174 and LSR-174(2)) with serial numbers 473 to 524.\n\n**The deadline:** Operators had to complete this modification within 500 flight hours after 31 October 1975.\n\n**How to comply:** Follow the manufacturer's Service Bulletin (SB 27-75) or the equivalent American FAA directive (AD 75-16-23)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-emy-11-patten-pan-avion-inflatable-escape-slides-modification","history":"/api/acts/ad-emy-11-patten-pan-avion-inflatable-escape-slides-modification/history","analysis":"/api/acts/ad-emy-11-patten-pan-avion-inflatable-escape-slides-modification/analysis","conflicts":"/api/acts/ad-emy-11-patten-pan-avion-inflatable-escape-slides-modification/conflicts","importantCases":"/api/acts/ad-emy-11-patten-pan-avion-inflatable-escape-slides-modification/important-cases","documents":"/api/acts/ad-emy-11-patten-pan-avion-inflatable-escape-slides-modification/documents"}}