{"id":"F2006B02705","name":"AD/B727/180 - Main Deck Cargo Door Hinge, Cargo Door System, and Cargo Barrier - 4","slug":"ad-b727-180-main-deck-cargo-door-hinge-cargo-door-system-and-cargo-barrier-4","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":42021,"registerId":"commonwealth-F2006B02705-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/B727/180 - Main Deck Cargo Door Hinge, Cargo Door System, and Cargo Barrier - 4","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \n\nAIRWORTHINESS DIRECTIVE\n\n![](image.001.png)\n\n![](image.001.png)  \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 CAR 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\nBoeing 727 Series Aeroplanes\n\nAD/B727/180 Main Deck Cargo Door Hinge, Cargo Door System,\n\nand Cargo Barrier \\- 4\n\n  \n11/2002\n\nApplicability: Model 727 series aircraft that have been converted from a passenger to a cargo- carrying (“freighter”) configuration in accordance with Supplemental Type Certificate (STC) SA1444SO, SA1509SO, SA1543SO, or SA1896SO.\n\nRequirement: Action in accordance with the technical requirements of FAA AD 2002-16-22 Amdt 39-12861.\n\nNote: Accomplishment of the actions in accordance with Pemco Service Bulletin 727-53-0006 Revision 1, dated 4 December 2001, constitutes compliance with the requirements of paragraphs (b) and (c) of the Requirement document.\n\nCompliance: As specified in the Requirement document with a revised effective date of 31 October 2002.\n\nThis Airworthiness Directive becomes effective on 31 October 2002.\n\nBackground : The FAA has determined that the main deck cargo door hinge installed on conversion from a passenger carrying to a cargo carrying aircraft configuration, is not fail- safe; that certain main deck cargo door control systems do not provide an adequate level of safety; and that the main deck cargo barrier is not structurally adequate during an emergency landing.\n\n![Signature of David Villiers, Delegate of the Civil Aviation Safety Authority.](image.002.jpeg)  \n\nDavid Alan Villiers\n\nDelegate of the Civil Aviation Safety Authority 11 September 2002\n\n![](image.001.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 9 October 2002.\n\n  \nPage 1 of 1","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":5,"scope_assessment":{"changed":false,"description":"The AD's scope aligns with the FAA's identified unsafe conditions and is limited to 727 aircraft converted under the listed STCs (Background; Applicability). The instrument does not expand applicability beyond those conversions; the only explicit change noted is adoption of a revised effective date of 31 October 2002 for compliance (Compliance)."},"complexity_factors":["Cross-jurisdictional reliance: The Requirement directs compliance with FAA AD 2002-16-22 rather than reproducing remedial steps (Requirement).","Limited applicability tied to specific STCs: Only 727s converted under STC SA1444SO, SA1509SO, SA1543SO or SA1896SO are covered (Applicability).","Technical remedy specification: Compliance depends on technical instructions in the FAA AD and Pemco Service Bulletin 727-53-0006 Rev 1, requiring technical maintenance work and possible parts/materials (Requirement; Note).","Compliance timing and change: The AD adopts the Requirement document's compliance schedule but sets a revised effective date of 31 October 2002, creating a concrete deadline for operators (Compliance).","Regulatory authority and discretion: The CASA delegate issues the AD under subregulation 39.1(1) of CAR 1998, exercising delegated discretion to require corrective action (preamble).","Operational and financial burden concentrated on operators: The AD places the obligation and cost of performing corrective maintenance on affected aircraft operators (Applicability; Requirement; Compliance)."],"plain_english_summary":"This Airworthiness Directive requires operators of Boeing 727 aeroplanes converted from passenger to freighter under STCs SA1444SO, SA1509SO, SA1543SO or SA1896SO to carry out the corrective technical work set out in FAA AD 2002-16-22 to address unsafe main-deck cargo door hinges, door control systems and cargo barriers. CASA issued the AD under subregulation 39.1(1); affected operators must follow the FAA instructions (or Pemco Service Bulletin 727-53-0006 Rev 1) by the revised effective date of 31 October 2002 and pay for compliance."},"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 AD maintains its original narrow scope: addressing specific safety defects in Boeing 727 freighter conversions. It has not expanded beyond its initial purpose of correcting unsafe conditions in cargo door hinges, control systems, and barriers for these specific aircraft."},"complexity_factors":["Very short document (1 page)","Only 4 defined STC numbers in applicability section","Single requirement that cross-references an external FAA document rather than spelling out technical steps","Simple compliance structure with one deadline","No nested exceptions or conditional logic","Background section provides clear rationale in plain language"],"plain_english_summary":"CASA requires owners/operators of Boeing 727 freighters converted under STCs SA1444SO, SA1509SO, SA1543SO or SA1896SO to correct unsafe main-deck cargo door and barrier defects that could cause in‑flight door failure or barrier collapse.\n\nCompliance is required by 31 October 2002 via FAA AD 2002‑16‑22 technical instructions or Pemco Service Bulletin Revision 1 (4 Dec 2001) to prevent loss of control and crew fatalities."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b727-180-main-deck-cargo-door-hinge-cargo-door-system-and-cargo-barrier-4","history":"/api/acts/ad-b727-180-main-deck-cargo-door-hinge-cargo-door-system-and-cargo-barrier-4/history","analysis":"/api/acts/ad-b727-180-main-deck-cargo-door-hinge-cargo-door-system-and-cargo-barrier-4/analysis","conflicts":"/api/acts/ad-b727-180-main-deck-cargo-door-hinge-cargo-door-system-and-cargo-barrier-4/conflicts","importantCases":"/api/acts/ad-b727-180-main-deck-cargo-door-hinge-cargo-door-system-and-cargo-barrier-4/important-cases","documents":"/api/acts/ad-b727-180-main-deck-cargo-door-hinge-cargo-door-system-and-cargo-barrier-4/documents"}}