{"id":"F2006B03406","name":"AD/B767/52 - Cargo Compartment Liner Panels","slug":"ad-b767-52-cargo-compartment-liner-panels","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":42947,"registerId":"commonwealth-F2006B03406-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/B767/52 - Cargo Compartment Liner Panels","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 - 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Boeing 767 Series Aeroplanes\n\n \n\nAD/B767/52 Cargo Compartment Liner Panels 3/91\n\nApplicability: Model 767 series; equipped with class “C” lower lobe cargo compartments that do not have complete cargo compartment floors.\n\n \n\nRequirement:  Action IAW the technical requirements of FAA AD 90-25-08 Amdt 39-6816. Compliance:              As specified in the Requirement Document.\n\nBackground: An FAA investigation into the service history of cargo compartment fires and full- scale fire testing, revealed that, without additional cargo liner panels, fire could migrate up behind the cargo liner and cause major structural damage.\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\n \n\n \n","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":false,"description":"The AD’s scope is confined to Model 767 aeroplanes with class \"C\" lower-lobe cargo compartments that lack complete floors and requires installation of additional cargo liner panels per the referenced FAA AD. The document states the safety rationale (preventing fire migration behind liners) and delegates technical and timing detail to the FAA AD and Requirement Document. Nothing in the text indicates the AD expands or contracts that stated scope beyond its expressed applicability and purpose."},"complexity_factors":["External cross-reference: the AD requires actions \"in accordance with\" FAA AD 90-25-08 Amdt 39-6816, so implementers must obtain and follow that external document (Requirement).","Technical work: installing cargo liner panels involves structural/fire-containment modifications that require certified maintenance and parts (Requirement; Background).","Limited applicability requires operators to determine whether specific aeroplanes qualify (Model 767 with class \"C\" lower-lobe compartments lacking complete floors) (Applicability).","Compliance timing and procedural details are not reproduced in the AD but delegated to the Requirement Document, creating an extra step and potential ambiguity for operators (Compliance).","Operational impact: the modification may require aircraft downtime and scheduling, affecting fleet availability and maintenance planning (Requirement; Compliance)."],"plain_english_summary":"This CASA Airworthiness Directive requires certain Boeing 767s with class‑C lower‑lobe cargo compartments (without full cargo floors) to have additional cargo compartment liner panels fitted to prevent fire migrating behind liners. Compliance is mandatory and is to be done in accordance with FAA AD 90‑25‑08 and its Requirement Document. Affected owners/operators bear parts, labour and downtime costs; maintenance planning must accommodate the mandated modifications or inspections."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive addressing a specific fire risk in a specific aircraft configuration. It has not expanded beyond its original purpose of mandating cargo liner panel installation."},"complexity_factors":["Very short document (approximately 150 words of substantive content)","Only 1 defined applicability criterion (Class C lower lobe cargo compartments without complete floors)","Single cross-reference to external technical document (FAA AD 90-25-08)","No nested conditional logic or exceptions","Straightforward command structure: identify affected aircraft → reference external standard → comply"],"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) that requires specific repairs or modifications to aircraft.\n\n**What it does:** It orders owners and operators of Boeing 767 aircraft to install additional protective panels (\"liner panels\") in the lower cargo compartments. These panels act as fire barriers.\n\n**Who it affects:** Anyone who owns or operates Boeing 767 series aircraft that have \"Class C\" lower cargo compartments **and** do not have complete cargo compartment floors.\n\n**Why it matters:** The FAA (American aviation regulator) discovered through testing that fires in the cargo hold could spread upward behind the existing liner panels and cause serious structural damage to the aircraft. This directive prevents that by requiring extra protection. Essentially: without this fix, a cargo fire could destroy the plane's structure.\n\n**What must be done:** Operators must follow the technical instructions in the American FAA directive AD 90-25-08 (specifically Amendment 39-6816). The timeline for compliance is set out in that same document."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b767-52-cargo-compartment-liner-panels","history":"/api/acts/ad-b767-52-cargo-compartment-liner-panels/history","analysis":"/api/acts/ad-b767-52-cargo-compartment-liner-panels/analysis","conflicts":"/api/acts/ad-b767-52-cargo-compartment-liner-panels/conflicts","importantCases":"/api/acts/ad-b767-52-cargo-compartment-liner-panels/important-cases","documents":"/api/acts/ad-b767-52-cargo-compartment-liner-panels/documents"}}