{"id":"F2006B03505","name":"AD/BAe 146/55 - Lift Spoilers Warning Light","slug":"ad-bae-146-55-lift-spoilers-warning-light","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43059,"registerId":"commonwealth-F2006B03505-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BAe 146/55 - Lift Spoilers Warning Light","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)  \nBritish Aerospace BAe 146 Series Aeroplanes\n\nAD/BAe 146/55 Lift Spoilers Warning Light 12/95\n\nApplicability: This Directive is applicable to BAe 146 Series 100, 100A, 200 and 200A aircraft identified in British Aerospace, Regional Aircraft Limited, Avro International Division, Mandatory Service Bulletin SB.27-70-00913A&B Revision 9 dated\n\n21 November 1994.\n\nRequirement: Unless previously accomplished, modify the aircraft in accordance with British Aerospace, Regional Aircraft Limited, Avro International Division, Mandatory Service Bulletin SB.27-70-00913A&B Revision 9 dated 21 November 1994.\n\nNote: CAA(UK) AD 008-02-94 refers.\n\nCompliance: Prior to 30 June 1996.\n\nBackground: This directive requires that an amber warning light, which illuminates if the lift spoilers fail to deploy on landing, be fitted to the glareshield. This reduces the possibility of the flight crew failing to deploy the lift spoilers on landing.","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, time-limited safety directive with a single purpose. It has not expanded beyond its original intent of mandating a specific cockpit warning system modification."},"complexity_factors":["Single, specific technical requirement (install warning light)","Only 4 aircraft variants affected (Series 100, 100A, 200, 200A)","Single compliance pathway (follow one specific service bulletin)","Hard deadline with no conditional extensions or exceptions","No nested definitions or cross-references to other legislation beyond a single note referencing the UK CAA AD","Background section provides clear rationale in plain language"],"plain_english_summary":"**What this is:** An Airworthiness Directive (AD) — essentially a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA) for specific aircraft.\n\n**What it does:** Requires owners or operators of certain British Aerospace BAe 146 aircraft (Series 100, 100A, 200 and 200A) to install an **amber warning light on the glareshield** (the panel at the base of the windshield where pilots look during landing). This light alerts pilots if the **lift spoilers** (panels on the wings that pop up after landing to kill lift and help the plane slow down) fail to deploy.\n\n**Why it matters:** If lift spoilers don't deploy on landing, the aircraft may not slow down properly, increasing the risk of runway overrun. The warning light reduces the chance that pilots won't notice the problem in time to take corrective action.\n\n**Who must comply:** Anyone operating the affected BAe 146 models who hasn't already made this modification.\n\n**By when:** Before 30 June 1996.\n\n**How to comply:** Follow the technical instructions in British Aerospace Mandatory Service Bulletin SB.27-70-00913A&B Revision 9 (dated 21 November 1994)."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive maintains a single, targeted scope: it requires the retrofit of an amber glareshield warning light to the specified BAe 146 models following the named Mandatory Service Bulletin and sets a compliance deadline (Prior to 30 June 1996). The text does not indicate any expansion or narrowing of that scope beyond the applicability and the specified modification requirements."},"complexity_factors":["Narrow applicability to specific BAe 146 Series 100/100A/200/200A aircraft identified in a single Mandatory Service Bulletin (Applicability).","Clear, single technical requirement: fit an amber glareshield warning light per the manufacturer’s service bulletin (Requirement; Background).","Fixed compliance deadline with no alternative compliance paths or exemptions stated in the text (Compliance).","Reliance on the manufacturer’s Mandatory Service Bulletin for technical detail shifts implementation complexity to maintenance organisations and the bulletin itself (Requirement).","Reference to an external regulator’s AD (CAA(UK) AD) adds a cross‑jurisdictional reference but not substantive procedural complexity (Note)."],"plain_english_summary":"Mandates installation of an amber glareshield warning light, per BAe Mandatory Service Bulletin SB.27-70-00913A&B Rev 9, on BAe 146 Series 100/100A/200/200A to alert crews if lift spoilers fail to deploy on landing. Operators/owners must arrange and pay for the modification and complete it before 30 June 1996 to maintain airworthiness; CASA issues the directive and cross‑references the related UK CAA AD."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bae-146-55-lift-spoilers-warning-light","history":"/api/acts/ad-bae-146-55-lift-spoilers-warning-light/history","analysis":"/api/acts/ad-bae-146-55-lift-spoilers-warning-light/analysis","conflicts":"/api/acts/ad-bae-146-55-lift-spoilers-warning-light/conflicts","importantCases":"/api/acts/ad-bae-146-55-lift-spoilers-warning-light/important-cases","documents":"/api/acts/ad-bae-146-55-lift-spoilers-warning-light/documents"}}