{"id":"F2009L00081","name":"AD/B737/351 - Fwd and Aft Entry and Service Doors Escape Slides","slug":"ad-b737-351-fwd-and-aft-entry-and-service-doors-escape-slides","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":76490,"registerId":"commonwealth-F2009L00081-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Boeing 737 Series Aeroplanes","sectionType":"division","heading":"Boeing 737 Series Aeroplanes","content":"### Boeing 737 Series Aeroplanes\n\n| AD/B737/351 | Fwd and Aft Entry andService Doors Escape Slides | 2/2009 |\n| ----------- | ------------------------------------------------ | ------ |\n\n| Applicability: | Model 737-600, -700, -700C, -800, and -900 series aircraft, as identified in Boeing Service Bulletin 737-25-1491, dated 23 April 2007, or later FAA approved revision.                                                                                                                                                                             |\n| -------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Action in accordance with the technical requirements of FAA AD 2008-24-08 Amdt 39-15748.                                                                                                                                                                                                                                                           |\n| Compliance:    | As specified in the Requirement document, with a revised effective date of12 February 2009.                                                                                                                                                                                                                                                        |\n|                | This Airworthiness Directive becomes effective on 12 February 2009.                                                                                                                                                                                                                                                                                |\n| Background:    | The FAA received reports that certain escape slides did not automatically inflate when deployed or after the manual inflation cable was pulled. The actions required by this Directive are intended to prevent failure of an escape slide to inflate when deployed, which could result in the slide being unusable during an emergency evacuation. |\n\n![](image.001.png)  \nDavid Punshon  \nDelegate of the Civil Aviation Safety Authority\n\n11 December 2008","sortOrder":0},{"sectionNumber":"AD/B737/351","sectionType":"part","heading":"AD/B737/351","content":"## AD/B737/351","sortOrder":1},{"sectionNumber":"Fwd and Aft Entry andService Doors Escap","sectionType":"part","heading":"Fwd and Aft Entry andService Doors Escape Slides","content":"## Fwd and Aft Entry and  \nService Doors Escape Slides","sortOrder":2},{"sectionNumber":"2/2009","sectionType":"part","heading":"2/2009","content":"## 2/2009","sortOrder":3}],"analysis":{"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard Airworthiness Directive implementing a specific safety fix. It has not expanded beyond its original purpose of addressing the escape slide inflation defect."},"complexity_factors":["Very short document (approximately 200 words of substantive content)","Only 1 defined term implicitly referenced (the FAA AD number)","No conditional logic or nested exceptions — simply mandates compliance with an external document","Single straightforward requirement: follow the FAA directive","No cross-references to other Australian legislation or complex statutory interpretation required"],"plain_english_summary":"This Airworthiness Directive orders operators of Boeing 737‑600/‑700/‑700C/‑800/‑900 series to fix forward and aft entry/service door escape slides that may fail to auto‑inflate or inflate via the manual cable. It’s a mandatory safety action to ensure usable evacuation slides; operators must follow the instructions and compliance dates in FAA AD 2008‑24‑08. Effective 12 February 2009."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The Directive adopts the FAA AD's technical requirements for preventing escape-slide inflation failure and limits applicability to the Boeing models identified in Boeing Service Bulletin 737-25-1491. It does not expand the class of aircraft or add requirements beyond the FAA AD; the only modification is the Australian effective date (Compliance, Requirement, Applicability)."},"complexity_factors":["Cross-reference to foreign regulator's mandatory action (FAA AD 2008-24-08) means operators must follow an external document for technical detail rather than this instrument itself (Requirement).","Applicability depends on a specific Boeing Service Bulletin (737-25-1491), including any later FAA‑approved revision, which requires operators to track revisions (Applicability).","Safety-critical system: escape slide inflation involves technical inspection, possible parts replacement or adjustment, and specialized maintenance procedures, increasing operational complexity (Background / Requirement).","Multiple aircraft models listed increases the number of affected operators and fleet heterogeneity for compliance planning (Applicability).","Compliance timetable and procedures are delegated to the FAA AD and the Service Bulletin, so Australian regulators reference external compliance schedules and technical standards (Compliance / Requirement).","Effective date revision (becomes effective 12 February 2009) creates a fixed legal start date for mandated actions, requiring operators to schedule work promptly (Compliance).","Potential compliance costs and operational downtime fall on aircraft owners/operators because the AD mandates corrective action without specifying cost apportionment (Requirement / Applicability)."],"plain_english_summary":"This Airworthiness Directive requires operators of specified Boeing 737-600, -700, -700C, -800 and -900 series aeroplanes (as listed in Boeing Service Bulletin 737-25-1491) to carry out the technical actions set out in FAA AD 2008-24-08. The directive targets forward and aft entry/service door escape slides that may fail to inflate and takes effect on 12 February 2009. It matters to aircraft owners, operators and maintenance organisations because it prescribes mandatory inspection and corrective work to ensure slides inflate during evacuations."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b737-351-fwd-and-aft-entry-and-service-doors-escape-slides","history":"/api/acts/ad-b737-351-fwd-and-aft-entry-and-service-doors-escape-slides/history","analysis":"/api/acts/ad-b737-351-fwd-and-aft-entry-and-service-doors-escape-slides/analysis","conflicts":"/api/acts/ad-b737-351-fwd-and-aft-entry-and-service-doors-escape-slides/conflicts","importantCases":"/api/acts/ad-b737-351-fwd-and-aft-entry-and-service-doors-escape-slides/important-cases","documents":"/api/acts/ad-b737-351-fwd-and-aft-entry-and-service-doors-escape-slides/documents"}}