{"id":"F2006B03448","name":"AD/B767/95 - Leading Edge Slat System","slug":"ad-b767-95-leading-edge-slat-system","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43002,"registerId":"commonwealth-F2006B03448-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/B767/95 - Leading Edge Slat System","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)  \nBoeing 767 Series Aeroplanes\n\nAD/B767/95 Leading Edge Slat System 4/97\n\nApplicability: All Model 767 series aircraft.\n\nRequirement: Inspect in accordance with the technical requirements of FAA AD 96-25-18 Amdt 39- 9861.\n\nNote: Boeing Alert Service Bulletin 767-27A0137 refers.\n\nCompliance: Unless already accomplished, before the accumulation of 10,500 total hours time in service, or within 500 hours time in service after 27 March 1997, whichever occurs later; thereafter at the intervals specified in the requirement document.\n\nThis airworthiness directive becomes effective on 27 March 1997.\n\nBackground: The FAA received reports of skewed panels of an outboard leading edge slat due to the failure of a corroded rotary actuator or the control rod. An undetected skewed slat panel could lead to control difficulty and result in slat structure damage.","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard, narrow airworthiness directive focused on a specific mechanical defect in a specific aircraft type. It has not expanded beyond its original safety purpose."},"complexity_factors":["Very short document — only 6 substantive paragraphs","No defined terms section — uses plain aviation terminology","Single cross-reference to FAA AD 96-25-18 and Boeing Service Bulletin 767-27A0137 (external documents not reproduced)","Simple conditional compliance formula: 'whichever occurs later' with two clear thresholds","No nested exceptions or conditional logic — straightforward inspection mandate","Background section provides clear safety rationale in plain language"],"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 maintenance actions on aircraft.\n\n**What it does:** It orders owners and operators of all Boeing 767 aircraft to inspect the **leading edge slat system** — the movable panels on the front of the wings that extend during takeoff and landing to create more lift. The inspection checks for corrosion in rotary actuators (the motors that move the slats) and control rods (the connecting linkages).\n\n**Why it matters:** Corrosion in these parts can cause a **\"skewed\" slat** — meaning one panel extends unevenly or at an angle compared to the others. If undetected, this can:\n- Make the aircraft harder to control\n- Damage the slat structure itself\n- Potentially compromise flight safety\n\n**Who must comply:** All operators of Boeing 767 series aircraft in Australia.\n\n**When to do it:** The inspection must be completed before the aircraft reaches 10,500 total flight hours, or within 500 flight hours after 27 March 1997 — whichever comes later. After that, repeat inspections are required at intervals specified in the original FAA directive.\n\n**Key point:** This directive adopts a US Federal Aviation Administration (FAA) safety order (AD 96-25-18) and references a Boeing service bulletin, meaning Australian operators must follow the technical procedures set by those documents."},"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":false,"description":"The directive applies to all Boeing Model 767 aircraft and prescribes inspection requirements tied to FAA AD 96-25-18 and a specific compliance timetable (Applicability; Requirement; Compliance). The text does not indicate any change or expansion of the instrument's scope from its original stated intent; it sets a single inspection mandate and recurring inspections as defined in the referenced document."},"complexity_factors":["Reference to an external technical document (FAA AD 96-25-18) for the detailed inspection procedure, requiring operators to obtain and follow another instrument (Requirement).","Time-based compliance trigger with two parts (before 10,500 total hours OR within 500 hours after a fixed date), which can require fleet-level tracking and scheduling (Compliance).","Recurring inspection intervals are not specified in this instrument but are given in the referenced FAA AD, adding dependence on external interval-setting (Compliance).","Technical nature of the inspections (corrosion detection, actuator/control-rod integrity) requires qualified maintenance personnel and possibly non-routine repair actions (Background; Requirement).","Cross-reference to a manufacturer service bulletin (Boeing Alert Service Bulletin 767-27A0137) introduces parallel guidance that operators must reconcile with the FAA AD (Note).","Enforcement and recordkeeping obligations implicit in airworthiness directives impose administrative and operational burden on operators (Requirement; Compliance)."],"plain_english_summary":"This AD requires all Boeing 767 operators to inspect the outboard leading‑edge slat system per FAA AD 96‑25‑18, with an initial check by 10,500 total hours or within 500 hours after 27 March 1997 and recurring thereafter. It aims to detect corrosion or failures that can cause skewed slat panels, shifting inspection, repair costs and maintenance scheduling burdens onto operators."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b767-95-leading-edge-slat-system","history":"/api/acts/ad-b767-95-leading-edge-slat-system/history","analysis":"/api/acts/ad-b767-95-leading-edge-slat-system/analysis","conflicts":"/api/acts/ad-b767-95-leading-edge-slat-system/conflicts","importantCases":"/api/acts/ad-b767-95-leading-edge-slat-system/important-cases","documents":"/api/acts/ad-b767-95-leading-edge-slat-system/documents"}}