{"id":"F2006B03420","name":"AD/B767/66 - Girt Bar","slug":"ad-b767-66-girt-bar","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":42961,"registerId":"commonwealth-F2006B03420-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/B767/66 - Girt Bar","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/B767/66 Girt Bar 7/92\n\nApplicability: Model 767 series; as listed in Boeing ASB 767-52A0061 Revision 1.\n\n \n\nRequirement: Adjust the ball plunger for the girt bar locks in accordance with Boeing Alert Service Bulletin 767-52A0061 Revision 1.\n\n \n\nNote: FAA AD 92-07-13 Amdt 39-8209 refers.\n\n \n\nCompliance: Prior to 25 August 1992.\n\n \n\nBackground: The FAA has received a report of an escape slide that failed to deploy and fell to the ground. The actions specified in this Directive are intended to ensure proper retention of the girt bar to the girt bar carrier.\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":3,"scope_assessment":{"changed":false,"description":"The directive's scope is limited to the Model 767 aircraft listed in Boeing ASB 767-52A0061 Revision 1 and requires a specific maintenance adjustment to the girt bar locks. The action, applicability and deadline are stated directly and the directive does not indicate any expansion or narrowing of that scope beyond what is specified (Applicability; Requirement; Compliance)."},"complexity_factors":["Narrow, single technical action required (adjust ball plunger) (Requirement)","Dependence on an external technical document (Boeing Alert Service Bulletin 767-52A0061 Revision 1) for the method of compliance (Requirement)","Fixed compliance deadline creates scheduling and logistical constraints for operators (Compliance)","Safety-critical context (escape slide deployment failure) increases consequence of non-compliance but does not add procedural detail (Background)","Implied need for qualified maintenance personnel and potential aircraft downtime, while no labour/parts/penalty details are provided (Requirement)","Reference to a related FAA airworthiness directive links to external regulatory action but does not expand procedural detail here (Note)"],"plain_english_summary":"This directive requires owners/operators and maintenance organisations to adjust the ball plunger on specified Boeing 767 girt bar locks per Boeing Alert Service Bulletin 767‑52A0061 Revision 1, to be completed by 25 August 1992. Issued by CASA after a slide deployment failure, the action aims to ensure girt bar retention; operators bear the cost and scheduling burden, and must follow the Boeing procedure as the means of compliance."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, time-limited safety directive addressing a specific mechanical defect. It has not expanded beyond its original purpose of mandating a single technical fix to girt bar locks on Boeing 767 aircraft."},"complexity_factors":["Extremely short document (under 200 words)","Only 1 substantive requirement (adjust ball plunger)","Single cross-reference to FAA AD 92-07-13 and Boeing service bulletin","No defined terms section — technical terms ('girt bar', 'ball plunger') rely on industry knowledge or external Boeing documentation","Simple unconditional compliance deadline with no exceptions or alternative methods","No nested conditions, no subsections, no interpretive provisions"],"plain_english_summary":"**What this is:** An Airworthiness Directive (AD) — essentially a mandatory safety fix ordered by Australia's aviation regulator (CASA) for specific Boeing 767 aircraft.\n\n**What it does:** Requires airlines or aircraft owners to adjust a small mechanical component called a \"ball plunger\" on the **girt bar locks**. The girt bar is the metal fitting that connects an emergency escape slide to the aircraft door frame. If this isn't secured properly, the slide can fall off instead of inflating during an emergency evacuation.\n\n**Who it affects:** Operators of Boeing 767 series aircraft listed in Boeing Alert Service Bulletin 767-52A0061 Revision 1.\n\n**Why it matters:** The FAA (American regulator) reported an incident where an escape slide failed to deploy and dropped to the ground. This directive prevents that dangerous failure by ensuring the girt bar stays properly locked to its carrier.\n\n**The deadline:** Aircraft had to be fixed before 25 August 1992.\n\n**Key point:** This is a **retrospective safety order** — it doesn't create new ongoing rules, but mandated a one-time mechanical adjustment to fix a known defect."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b767-66-girt-bar","history":"/api/acts/ad-b767-66-girt-bar/history","analysis":"/api/acts/ad-b767-66-girt-bar/analysis","conflicts":"/api/acts/ad-b767-66-girt-bar/conflicts","importantCases":"/api/acts/ad-b767-66-girt-bar/important-cases","documents":"/api/acts/ad-b767-66-girt-bar/documents"}}