{"id":"F2006B03398","name":"AD/B767/44 - Spoiler Wheel Command Unit","slug":"ad-b767-44-spoiler-wheel-command-unit","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":42939,"registerId":"commonwealth-F2006B03398-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/B767/44 - Spoiler Wheel Command Unit","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/B767/44 Spoiler Wheel Command Unit 10/90\n\nApplicability: Line no’s 1 thru 243, 257, 262, 263, 269, 273 thru 275, 282, 285, 289 and 291. Requirement:               Boeing SB 767-27-0085 R1 or later revision.\n\nNote: FAA AD 90-10-07 also refers.\n\n \n\nCompliance: Prior to 30 June 1992.\n\n \n\nBackground: To prevent uncommanded extension of three flight spoilers.\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\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive addressing a specific mechanical defect in specific aircraft. It has not expanded beyond its original purpose of mandating a hardware fix to prevent uncommanded spoiler deployment."},"complexity_factors":["Very short document (approximately 150 words)","Only 4 substantive sections: Applicability, Requirement, Compliance, and Background","Single technical requirement referencing an external Boeing Service Bulletin","No defined terms section","No nested conditional logic or exceptions","Simple date-based compliance deadline with no alternative methods or escalations","Minimal cross-referencing (only one FAA AD mentioned in a note)"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA) for specific Boeing 767 aircraft.\n\n**What it does:**\n- Requires owners/operators of certain Boeing 767 planes (specific serial numbers listed) to install a modified or replacement **Spoiler Wheel Command Unit** — a component that controls the aircraft's spoiler panels (flight surfaces used to slow the plane down or assist with turning).\n\n**Why it matters:**\n- The directive addresses a dangerous defect where **three flight spoilers could extend unexpectedly** during flight. Uncommanded spoiler deployment can cause sudden loss of lift, violent pitching, or loss of control — potentially catastrophic.\n\n**Who must comply:**\n- Operators of Boeing 767 aircraft with serial numbers 1 through 243, plus several additional specific aircraft (257, 262, 263, 269, 273-275, 282, 285, 289, and 291).\n\n**What they must do:**\n- Follow Boeing Service Bulletin 767-27-0085 Revision 1 (or later) to fix the problem.\n- Complete the work **before 30 June 1992**.\n\n**Note:** This aligns with a similar US Federal Aviation Administration directive (FAA AD 90-10-07), showing this was an internationally recognised safety issue."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The instrument, as presented, sets a targeted, time-limited requirement for specific Boeing 767 line numbers to comply with a named Boeing service bulletin to prevent uncommanded spoiler extension. The text contains no indication that the scope has been expanded or narrowed from its original formulation; it remains focused on the listed aircraft and the referenced service bulletin. (Applicability; Requirement; Compliance; Background)"},"complexity_factors":["Narrow, non‑contiguous applicability defined by specific aircraft line numbers (requires careful identification of affected airframes). (Applicability)","Technical work is not described in the AD itself but is delegated to an external Boeing service bulletin, requiring operators to obtain and follow that document. (Requirement)","Fixed compliance deadline (30 June 1992) creates time pressure and scheduling needs. (Compliance)","\"Or later revision\" language permits use of newer service bulletin revisions, introducing regulatory/administrative discretion about acceptable revisions. (Requirement)","Cross-reference to FAA AD means operators must track parallel foreign regulatory requirements for consistency. (Note)","Lack of technical detail in the AD increases reliance on maintenance providers and documentation to demonstrate compliance. (Requirement)"],"plain_english_summary":"This AD requires operators of specified Boeing 767 line numbers to perform the work in Boeing Service Bulletin 767-27-0085 Revision 1 (or a later approved revision) by 30 June 1992 to prevent uncommanded extension of three flight spoilers. Affected owners/operators must fund, schedule and document the work; CASA enforces the directive and it cross‑references the corresponding FAA AD."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b767-44-spoiler-wheel-command-unit","history":"/api/acts/ad-b767-44-spoiler-wheel-command-unit/history","analysis":"/api/acts/ad-b767-44-spoiler-wheel-command-unit/analysis","conflicts":"/api/acts/ad-b767-44-spoiler-wheel-command-unit/conflicts","importantCases":"/api/acts/ad-b767-44-spoiler-wheel-command-unit/important-cases","documents":"/api/acts/ad-b767-44-spoiler-wheel-command-unit/documents"}}