{"id":"F2006B03368","name":"AD/B767/192 - Aft Pressure Bulkhead Web","slug":"ad-b767-192-aft-pressure-bulkhead-web","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":42818,"registerId":"commonwealth-F2006B03368-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# AIRWORTHINESS DIRECTIVE\n\n![](image.001.png)  \n\nFor the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CASR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.\n\n![](image.001.png)  \n\nBoeing 767 Series Aeroplanes","sortOrder":0},{"sectionNumber":"AD/B767/192 Aft Pressure Bulkhead Web 5/","sectionType":"part","heading":"AD/B767/192 Aft Pressure Bulkhead Web 5/2004","content":"# AD/B767/192 Aft Pressure Bulkhead Web 5/2004\n\nApplicability: Model 767-200 and \\-300 series aircraft, line numbers 1 through 423.\n\nRequirement: Inspect in accordance with the technical requirements of FAA AD 2004-05-16 Amdt 39-13511.\n\nNote: Boeing Alert Service Bulletin 767-53A0087 refers.\n\nCompliance: As specified in the Requirement document, with a revised effective date of 13 May 2004.\n\nThis Airworthiness Directive becomes effective on 13 May 2004.\n\nBackground: Reports were received of cracks in the aft pressure bulkhead web to pressure chord joint on Models 737 and 747 aircraft. Due to the structural similarity, inspection has been extended to the Model 767 aircraft. Cracks in the aft pressure bulkhead web can result in rapid decompression and/or damage to, or interference with, control systems that penetrate the dome.\n\n![Signature of David Villiers, Delegate of the Civil Aviation Safety Authority.](image.002.png)  \n\nDavid Villiers\n\nDelegate of the Civil Aviation Safety Authority 2 April 2004\n\n![](image.001.png)","sortOrder":1}],"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":true,"description":"Scope was expanded from earlier crack reports on Models 737 and 747 to include Model 767 aircraft due to structural similarity. The AD expressly applies inspections to Model 767-200 and -300 aircraft, line numbers 1–423 (Applicability; Background), and mandates inspection per FAA AD 2004-05-16 (Requirement)."},"complexity_factors":["Cross-reference to external FAA AD 2004-05-16 and Boeing Alert Service Bulletin 767-53A0087 (Requirement/Note) increases dependency on non‑CASA documents.","Technical nature of inspection (aft pressure bulkhead web) requires specialised maintenance resources and judgement (Requirement).","Applicability confined to specific models and line numbers (Applicability) simplifies population but requires fleet‑level record checks.","Compliance timing set by the referenced documents with a revised effective date (Compliance) creates scheduling obligations.","Safety consequence described (rapid decompression/control interference) raises urgency but not technical detail in this AD (Background).","Delegated signature formalises CASA enforcement but does not add procedural detail (signature/Background)."],"plain_english_summary":"This Airworthiness Directive requires operators of Boeing 767-200 and -300 aircraft (line numbers 1–423) to carry out inspections of the aft pressure bulkhead web following the technical instructions in FAA AD 2004-05-16 and Boeing Alert Service Bulletin 767-53A0087. It takes effect 13 May 2004. The directive responds to crack reports on 737/747 airframes and aims to detect defects that could cause rapid decompression or interfere with control systems. Operators must fund and schedule the inspections and follow the external technical documents for timing and method."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard airworthiness directive with a narrow, specific purpose: mandating inspection of a particular aircraft component. The scope remains tightly focused on the identified safety risk and affected aircraft population. No scope creep is evident."},"complexity_factors":["Very short document (under 300 words)","Only 1 defined term implicitly used ('line numbers' referring to manufacturing serial numbers)","Single cross-reference to external FAA document rather than internal legislative complexity","No nested conditions or exceptions — straightforward applicability and requirement structure","Minimal conditional logic: simple 'if your aircraft is in this list, you must inspect' structure"],"plain_english_summary":"The Civil Aviation Safety Authority requires operators of Boeing 767-200/300 (line numbers 1–423) to inspect the aft pressure bulkhead web, following FAA AD 2004-05-16 and Boeing SB 767-53A0087. Prompt checks are ordered because similar cracks on 737/747 types risk rapid decompression and control-system damage. This Australian safety order takes effect 13 May 2004 and applies to airlines, owners and maintenance crews."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b767-192-aft-pressure-bulkhead-web","history":"/api/acts/ad-b767-192-aft-pressure-bulkhead-web/history","analysis":"/api/acts/ad-b767-192-aft-pressure-bulkhead-web/analysis","conflicts":"/api/acts/ad-b767-192-aft-pressure-bulkhead-web/conflicts","importantCases":"/api/acts/ad-b767-192-aft-pressure-bulkhead-web/important-cases","documents":"/api/acts/ad-b767-192-aft-pressure-bulkhead-web/documents"}}