{"id":"F2006B06770","name":"AD/SA-TP/21 - Passenger Lap Straps","slug":"ad-sa-tp-21-passenger-lap-straps","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":114607,"registerId":"commonwealth-F2006B06770-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/SA-TP/21 - Passenger Lap Straps","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)  British Aerospace (Scottish Aviation) Twin Pioneer Series Aeroplanes\n\n \n\nAD/SA-TP/21 Passenger Lap Straps NK\n\nApplicability: All models fitted with lap straps P/N ME/2095. Document:  Scottish Aviation TNS No. 36.\n\nCompliance: Forthwith.\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\n \n\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This appears to be a standard, narrow airworthiness directive focused on a specific safety-critical component (passenger lap straps) on a specific aircraft type. It matches the typical scope of ADs, which are targeted safety interventions rather than broad regulatory schemes."},"complexity_factors":["Extremely short document (under 200 words)","Only 1 defined term implicitly referenced (P/N = Part Number)","No cross-references to other legislation beyond the enabling Civil Aviation Regulations 1998","Simple unconditional command structure: applicability + document reference + immediate compliance","No exceptions, exemptions, or conditional logic","Single technical reference to external document (TNS No. 36) rather than detailed technical instructions within the directive itself"],"plain_english_summary":"**What this is:** This is an Airworthiness Directive (AD) — essentially a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA) under the Civil Aviation Regulations 1998.\n\n**What it does:** It requires immediate action on all British Aerospace (Scottish Aviation) Twin Pioneer aircraft that have passenger lap straps with the part number ME/2095. The directive references a technical document (Scott Aviation Technical Note Service No. 36) that presumably contains the specific instructions for inspection, repair, or replacement.\n\n**Who it affects:** Owners and operators of British Aerospace Twin Pioneer series aeroplanes fitted with these specific lap straps.\n\n**Why it matters:** \"Forthwith\" compliance means this is urgent — there's likely a safety defect or failure mode discovered with these particular lap straps that could endanger passengers during turbulence, hard landings, or accidents. The directive forces operators to fix the problem immediately rather than waiting for the next scheduled maintenance."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The AD text supplied does not indicate any change of scope from a prior instrument or intent. It sets a single, clear scope: all models fitted with lap straps P/N ME/2095 must comply with the referenced Scottish Aviation TNS No. 36 forthwith. No amendment history, narrower or broader redefinition, or departure from an original scope is contained in the supplied text."},"complexity_factors":["Very narrow technical scope: applies only to lap straps with part number ME/2095 (Applicability).","Immediate compliance requirement increases operational urgency but the AD text itself is short (Compliance: Forthwith).","Remedial actions are not specified in the AD text; the AD relies on an external technical document (Scottish Aviation TNS No. 36), creating dependency on that document for technical detail (Document: Scottish Aviation TNS No. 36).","No procedural detail in the AD about documentation, enforcement, or timelines beyond 'forthwith'.","Potential for operational disruption depending on what the referenced technical note requires, but the AD does not quantify or describe that impact.","Clear parts-identification (P/N ME/2095) reduces ambiguity about applicability."],"plain_english_summary":"This Airworthiness Directive (AD/SA-TP/21) makes Scottish Aviation TNS No. 36 mandatory for all aeroplanes fitted with lap straps P/N ME/2095, requiring operators to comply forthwith.\n\nIt therefore binds owners/operators (who bear the costs and any short-term disruption) to whatever inspections or corrective actions the referenced technical note prescribes; the AD itself gives no remedial steps, timelines beyond “forthwith,” or funding."}},"importantCases":[],"_links":{"self":"/api/acts/ad-sa-tp-21-passenger-lap-straps","history":"/api/acts/ad-sa-tp-21-passenger-lap-straps/history","analysis":"/api/acts/ad-sa-tp-21-passenger-lap-straps/analysis","conflicts":"/api/acts/ad-sa-tp-21-passenger-lap-straps/conflicts","importantCases":"/api/acts/ad-sa-tp-21-passenger-lap-straps/important-cases","documents":"/api/acts/ad-sa-tp-21-passenger-lap-straps/documents"}}