{"id":"F2006B03383","name":"AD/B767/27 - Upper Door Liner Bolt","slug":"ad-b767-27-upper-door-liner-bolt","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":42885,"registerId":"commonwealth-F2006B03383-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/B767/27 - Upper Door Liner Bolt","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/B767/27 Upper Door Liner Bolt 12/89\n\nApplicability: All model 767 on which Boeing SB 767-25-0036 has been accomplished. Requirement:               Action in accordance with Boeing Alert SB 767-25A0109 Revision 2.\n\nNote: FAA AD 89-16-11 refers.\n\n \n\nCompliance: Unless previously accomplished, prior to 31 March 1991.\n\n \n\nBackground:  Country of origin AD. Interference between the aft passenger door upper liner track pivot bolt and the escape slide packboard, if not corrected, could result in failure of the escape slide to properly deploy, and of the door to fully open, during emergency evacuation.\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":2,"scope_assessment":{"changed":false,"description":"The directive’s scope is narrowly defined in the text: it applies to all Boeing 767 aeroplanes on which Boeing SB 767-25-0036 has been accomplished and requires action per Boeing Alert SB 767-25A0109 Revision 2 by the stated compliance date. The document itself does not indicate any expansion or contraction of scope beyond those applicability and requirement statements (Applicability, Requirement, Compliance)."},"complexity_factors":["Narrow applicability: applies only to 767s on which Boeing SB 767-25-0036 has been accomplished (Applicability)","Single external technical reference: requires action exactly as set out in Boeing Alert SB 767-25A0109 Revision 2 (Requirement)","Fixed compliance date with no alternatives given in the text (Compliance)","Clear, specific safety hazard described (interference affecting escape slide and door) limiting scope of required fix (Background)","Operational execution requires technical maintenance competence and access to the service bulletin, adding practical but typical implementation complexity (Requirement)"],"plain_english_summary":"This directive requires operators of Boeing 767s (only those on which Boeing Service Bulletin 767-25-0036 has been done) to carry out the corrective work in Boeing Alert Service Bulletin 767-25A0109 Revision 2 by 31 March 1991 unless already completed. It was issued because an interference could prevent escape‑slide deployment and full door opening in an evacuation. The rule affects affected aircraft owners/operators, imposes maintenance cost and scheduling impact, and references the FAA AD as related guidance."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, original airworthiness directive with a narrow, specific safety purpose. It has not expanded beyond its original intent."},"complexity_factors":["Very short document (under 200 words)","Only 1 defined applicability criterion (Boeing SB 767-25-0036 accomplishment)","Single, unambiguous compliance action (follow Boeing Alert SB 767-25A0109 Rev 2)","No nested exceptions or conditional logic","Clear deadline with simple 'unless previously accomplished' carve-out","Cross-reference to FAA AD 89-16-11 is informational only, not operative"],"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 inspections on aircraft.\n\n**What it does:** It orders owners and operators of certain Boeing 767 aeroplanes to fix a dangerous mechanical problem with the aft (rear) passenger door. Specifically, a bolt in the door's upper liner track can interfere with the escape slide packboard. If not fixed, this could stop the emergency escape slide from deploying properly and prevent the door from fully opening during an emergency evacuation.\n\n**Who must comply:** All Boeing 767 models that have already had Boeing Service Bulletin 767-25-0036 installed. The fix must follow Boeing Alert Service Bulletin 767-25A0109 Revision 2.\n\n**When it had to be done:** Before 31 March 1991 (unless already fixed).\n\n**Why it matters:** This is a life-safety issue. In an emergency, passengers need escape slides to deploy instantly and doors to open fully. A jammed bolt could trap people inside a burning or damaged aircraft."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b767-27-upper-door-liner-bolt","history":"/api/acts/ad-b767-27-upper-door-liner-bolt/history","analysis":"/api/acts/ad-b767-27-upper-door-liner-bolt/analysis","conflicts":"/api/acts/ad-b767-27-upper-door-liner-bolt/conflicts","importantCases":"/api/acts/ad-b767-27-upper-door-liner-bolt/important-cases","documents":"/api/acts/ad-b767-27-upper-door-liner-bolt/documents"}}