{"id":"F2006L00125","name":"AD/B747/338 - Station 488 Frame Web","slug":"ad-b747-338-station-488-frame-web","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":58003,"registerId":"commonwealth-F2006L00125-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Boeing 747 Series Aeroplanes","sectionType":"division","heading":"Boeing 747 Series Aeroplanes","content":"### Boeing 747 Series Aeroplanes\n\n| AD/B747/338 | Station 488 Frame Web | 2/2006 |\n| ----------- | --------------------- | ------ |\n\n| Applicability: | Model 747-100, -100B, -100B SUD, -200B, -200C, -200F, -300, 747SR, and 747SP series aircraft; as listed in Boeing Alert Service Bulletin 747-53A2508 original issue, dated 19 August 2004, or later FAA approved revision.                      |\n| -------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Action in accordance with the technical requirements of FAA AD 2005-22-06Amdt 39-14350.                                                                                                                                                         |\n| Compliance:    | As specified in the Requirement document, with a revised effective date of16 February 2006.                                                                                                                                                     |\n|                | This Airworthiness Directive becomes effective on 16 February 2006.                                                                                                                                                                             |\n| Background:    | The FAA received reports of cracking at the upper aft corner of the cutout for main entry door number 1 in the station 488 frame web. Undetected cracking could result in failure of the frame and lead to rapid decompression of the aircraft. |\n\n![](image.001.png)  \nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n21 December 2005","sortOrder":0},{"sectionNumber":"AD/B747/338","sectionType":"part","heading":"AD/B747/338","content":"## AD/B747/338","sortOrder":1},{"sectionNumber":"Station 488 Frame Web","sectionType":"part","heading":"Station 488 Frame Web","content":"## Station 488 Frame Web","sortOrder":2},{"sectionNumber":"2/2006","sectionType":"part","heading":"2/2006","content":"## 2/2006","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"},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The AD adopts the FAA AD's technical requirements for inspection and repair without expanding the listed applicability. The only explicit modification in this instrument is a revised effective date of 16 February 2006 (Requirement; Compliance)."},"complexity_factors":["Cross-reference to an external FAA AD (FAA AD 2005-22-06Amdt 39-14350) — requires operators to consult and follow another authority's technical requirements (Requirement).","Multiple affected airframe models listed — applicability covers many 747 series variants, increasing the number of operators and fleet types who must act (Applicability).","Safety-critical engineering actions (inspections/repairs) are required but the detailed procedures are contained in the FAA document, not reproduced here — operational burden rests on operators and maintenance organisations (Requirement).","Revised effectiveness timing is specified, creating a fixed compliance date that operators must meet (Compliance: revised effective date 16 February 2006).","Risk-driven mandate: based on reported cracking at station 488; failure consequence is rapid decompression, so enforcement and timely action are material (Background).","Administrative simplicity of the AD itself (short text) but practical complexity in arranging inspections, parts and repairs across fleets — costs and downtime fall to operators (Applicability; Requirement; Compliance)."],"plain_english_summary":"This Airworthiness Directive requires operators of the listed Boeing 747 models to carry out the inspections and repairs set out in FAA AD 2005-22-06 (as amended), with this instrument effective 16 February 2006. \n\nIt addresses reported cracking at the upper aft corner of the station 488 main entry door 1 cutout; operators bear the cost, must schedule inspection/repair, and comply to prevent possible frame failure and rapid decompression."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard Airworthiness Directive with a narrow, specific safety purpose — addressing a known structural defect in a particular aircraft component. It has not expanded beyond its original intent."},"complexity_factors":["Very short document (approximately 200 words)","No defined terms section — relies entirely on external technical references","Single, straightforward requirement: comply with an existing FAA directive","No conditional logic or nested exceptions","Applicability determined by reference to external Boeing service bulletin rather than complex legislative criteria","Minimal cross-referencing (only to FAA AD 2005-22-06 and Boeing Alert Service Bulletin 747-53A2508)"],"plain_english_summary":"This CASA Airworthiness Directive mandates inspections and repairs for cracking at the upper rear corner of the station‑488 frame web around the main entry door (Door 1) on certain Boeing 747 variants. It applies to aircraft identified in Boeing Alert Service Bulletin 747‑53A2508 and requires compliance with FAA AD 2005‑22‑06. The action prevents frame failure and possible rapid cabin decompression."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b747-338-station-488-frame-web","history":"/api/acts/ad-b747-338-station-488-frame-web/history","analysis":"/api/acts/ad-b747-338-station-488-frame-web/analysis","conflicts":"/api/acts/ad-b747-338-station-488-frame-web/conflicts","importantCases":"/api/acts/ad-b747-338-station-488-frame-web/important-cases","documents":"/api/acts/ad-b747-338-station-488-frame-web/documents"}}