{"id":"F2007L04007","name":"AD/B747/363 - Fuselage Skin at Bulk Cargo Door Cutout","slug":"ad-b747-363-fuselage-skin-at-bulk-cargo-door-cutout","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":160800,"registerId":"commonwealth-F2007L04007-current","compilationNumber":null,"startDate":"2026-04-04","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/B747/363 | Fuselage Skin at Bulk Cargo Door Cutout | 11/2007 |\n| ----------- | --------------------------------------- | ------- |\n\n| Applicability: | Model 747-100, -200B, -200C, and -200F series aircraft; as identified in Boeing Alert Service Bulletin 747-53A2673 original issue, or later FAA approved revision.                                                                                                                                        |\n| -------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Action in accordance with the technical requirements of FAA AD 2007-17-13 Amdt 39-15171.                                                                                                                                                                                                                  |\n| Compliance:    | As specified in the Requirement document.                                                                                                                                                                                                                                                                 |\n|                | This Airworthiness Directive becomes effective on 25 October 2007.                                                                                                                                                                                                                                        |\n| Background:    | The FAA received a report of a 2-inch crack through the fuselage skin and internal bonded doubler at the cutout of the bulk cargo door light. Undetected cracking could result in reduced structural integrity of the fuselage at the bulk cargo door and consequent rapid decompression of the aircraft. |\n\n![](image.001.png)  \nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n13 September 2007","sortOrder":0},{"sectionNumber":"AD/B747/363","sectionType":"part","heading":"AD/B747/363","content":"## AD/B747/363","sortOrder":1},{"sectionNumber":"Fuselage Skin at Bulk Cargo Door Cutout","sectionType":"part","heading":"Fuselage Skin at Bulk Cargo Door Cutout","content":"## Fuselage Skin at Bulk Cargo Door Cutout","sortOrder":2},{"sectionNumber":"11/2007","sectionType":"part","heading":"11/2007","content":"## 11/2007","sortOrder":3}],"analysis":{"flash_summary_failed":{"failed":true,"reason":"A positive credit balance is required for all requests, including BYOK, so fallback providers remain available. Add credits at https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Fmodal%3Dtop-up to continue.","source":"analysis-cron"},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"This AD adopts the FAA AD's requirements for the identified 747-100/-200 series aircraft; the instrument, as published, applies those external technical requirements without expanding applicability or obligations beyond the FAA document cited (Applicability; Requirement; Background)."},"complexity_factors":["Direct incorporation of an external technical requirement — compliance is to be in accordance with FAA AD 2007-17-13 (Requirement).","Model-specific applicability limits affected operators to certain 747-100 and -200 variants (Applicability).","Technical nature of required actions: structural inspection and any necessary repairs to fuselage skin and bonded doubler (Background; Requirement).","Compliance timing and regulatory effect: an effective date is specified, creating a binding compliance schedule (Compliance).","Safety risk linkage: ties regulatory action to a specific reported crack and risk of rapid decompression, which influences urgency and inspection frequency (Background).","Regulatory delegation: CASA enforces the AD by adopting the FAA directive as the technical standard, leaving limited local discretion (document signature/effective notice)."],"plain_english_summary":"This Airworthiness Directive requires owners/operators of specified Boeing 747-100 and -200 series aircraft to carry out the inspections and corrective actions set out in FAA AD 2007-17-13 for cracking at the bulk cargo door cutout. The FAA reported a 2‑inch crack through the fuselage skin and bonded doubler; the AD aims to prevent reduced structural integrity and possible 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 scope: addressing a known structural defect in particular Boeing 747 models. It has not expanded beyond its original safety purpose."},"complexity_factors":["Very short document (approximately 200 words of substantive content)","Only 4 defined applicability criteria (specific aircraft models)","Single technical requirement referencing external FAA document rather than setting out detailed technical steps","No nested exceptions or conditional logic","No interpretation section or defined terms","Straightforward compliance structure (follow the FAA AD)","Minimal cross-referencing (only to Boeing Service Bulletin and FAA AD)"],"plain_english_summary":"Owners and operators of certain Boeing 747-100/200 series aircraft must inspect and repair a known fuselage cracking defect at the bulk cargo door cutout, following the technical requirements of FAA AD 2007-17-13 (per Boeing Alert SB 747-53A2673). Effective 25 October 2007, this mandatory CASA AD addresses cracks that could weaken structure and cause rapid decompression, protecting passenger and flight safety."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b747-363-fuselage-skin-at-bulk-cargo-door-cutout","history":"/api/acts/ad-b747-363-fuselage-skin-at-bulk-cargo-door-cutout/history","analysis":"/api/acts/ad-b747-363-fuselage-skin-at-bulk-cargo-door-cutout/analysis","conflicts":"/api/acts/ad-b747-363-fuselage-skin-at-bulk-cargo-door-cutout/conflicts","importantCases":"/api/acts/ad-b747-363-fuselage-skin-at-bulk-cargo-door-cutout/important-cases","documents":"/api/acts/ad-b747-363-fuselage-skin-at-bulk-cargo-door-cutout/documents"}}