{"id":"F2006B02030","name":"AD/AA-1/19 - Seat Belt Attachment Bracket - Replacement","slug":"ad-aa-1-19-seat-belt-attachment-bracket-replacement","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41252,"registerId":"commonwealth-F2006B02030-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/AA-1/19 - Seat Belt Attachment Bracket - Replacement","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-description: CASA Airworthiness Directive\nmeta-generator: Aspose.Words for .NET 22.10.0\nmeta-keywords: Issue 5/1985,Aircraft below 5700 kg,Gulfstream (Grumman American/ American Aviation) AA-1 Series Aeroplanes,Seat Belt Attachment Bracket - Replacement,19\ntitle: Airworthiness Directive - AD/AA-1/19 - Seat Belt Attachment Bracket - Replacement\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)  Gulfstream (Grumman American/ American Aviation) AA-1 Series Aeroplanes\n\n \n\nAD/AA-1/19 Seat Belt Attachment Bracket - Replacement 5/85\n\nApplicability: All models AA-1, AA-1A, AA-1B and AA-1C. Requirement:  Gulfstream Aerospace S.B. No. 173.\n\nCompliance: Within 50 hours’ time in service after 31 May 1985.\n\n \n\nBackground: It is possible for the existing P/N 60152-2 to fail on some aircraft in the event of severe deceleration.\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, single-issue safety directive focused specifically on one aircraft part. It has not expanded beyond its original purpose of addressing the seat belt bracket failure risk."},"complexity_factors":["Extremely short document (under 200 words)","Only 4 defined models in applicability section","Single compliance requirement with clear deadline","No cross-references to other legislation beyond basic enabling regulation (CAR 1998 Part 39)","No conditional logic or exceptions","Simple cause-and-effect: identified defect → mandatory replacement → deadline"],"plain_english_summary":"**What this is:** An Airworthiness Directive (AD) issued by the Civil Aviation Safety Authority (CASA). Think of this as a mandatory safety recall for aircraft — it legally requires owners/operators to fix a specific safety problem.\n\n**What it does:** Requires owners of Gulfstream AA-1 series light aircraft (models AA-1, AA-1A, AA-1B, and AA-1C) to replace a faulty seat belt attachment bracket. The old bracket (part number 60152-2) can break during a severe crash or hard braking, which could mean passengers aren't properly restrained in an accident.\n\n**Who must comply:** Anyone who owns or operates these specific small aircraft (under 5,700 kg weight limit).\n\n**What they must do:** Follow Gulfstream Aerospace Service Bulletin No. 173 to replace the bracket. This must be done within 50 hours of flying time after 31 May 1985.\n\n**Why it matters:** This is a life-safety issue. A failed seat belt bracket in a crash means people could be thrown around the cabin or ejected from the aircraft. The directive ensures a known structural weakness gets fixed before it causes injuries or deaths."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"Scope appears consistent with the stated safety aim: it mandates replacement across the entire AA‑1 family to address the identified failure of P/N 60152-2, using the manufacturer's service bulletin and a fixed compliance deadline (see 'Background', 'Applicability', 'Requirement', 'Compliance')."},"complexity_factors":["Narrow technical requirement: single corrective action (bracket replacement) tied to a specific part number risk — 'Background: It is possible for the existing P/N 60152-2 to fail...'.","Clear applicability: affects all AA-1, AA-1A, AA-1B and AA-1C models — 'Applicability: All models AA-1, AA-1A, AA-1B and AA-1C.'","Fixed short compliance window: 'Compliance: Within 50 hours’ time in service after 31 May 1985.'","Dependency on manufacturer procedure: corrective work specified by Gulfstream Aerospace Service Bulletin No. 173 — 'Requirement: Gulfstream Aerospace S.B. No. 173.'","Regulatory source: issued under the Civil Aviation Regulations 1998, Part 39 (Schedule of Airworthiness Directives) — header material, which frames enforcement and legal effect.","Operational burden on operators: obligation to carry out replacement within the stated time (implicit from 'Applicability' and 'Compliance'), creating scheduling, parts-sourcing and maintenance workload."],"plain_english_summary":"This Airworthiness Directive orders replacement of the seat belt attachment bracket identified by P/N 60152-2 on all Gulfstream (Grumman American/American Aviation) AA‑1 series aeroplanes, using Gulfstream Aerospace Service Bulletin No. 173. Operators must complete the replacement within 50 hours’ time in service after 31 May 1985. The measure responds to a risk that the existing bracket can fail under severe deceleration and prescribes a single corrective action and deadline."}},"importantCases":[],"_links":{"self":"/api/acts/ad-aa-1-19-seat-belt-attachment-bracket-replacement","history":"/api/acts/ad-aa-1-19-seat-belt-attachment-bracket-replacement/history","analysis":"/api/acts/ad-aa-1-19-seat-belt-attachment-bracket-replacement/analysis","conflicts":"/api/acts/ad-aa-1-19-seat-belt-attachment-bracket-replacement/conflicts","importantCases":"/api/acts/ad-aa-1-19-seat-belt-attachment-bracket-replacement/important-cases","documents":"/api/acts/ad-aa-1-19-seat-belt-attachment-bracket-replacement/documents"}}