{"id":"F2017L00519","name":"AD/JABIRU/2 - Wing Attachment Bolts - Life Limit","slug":"ad-jabiru-2-wing-attachment-bolts-life-limit","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":96285,"registerId":"commonwealth-F2017L00519-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Avtech (Jabiru Aircraft) Series Aeroplan","sectionType":"part","heading":"Avtech (Jabiru Aircraft) Series Aeroplanes","content":"# Avtech (Jabiru Aircraft) Series Aeroplanes\n\n| AD/JABIRU/2 | Wing Attachment Bolts - Life Limit | 10/2017 |\n| ----------- | ---------------------------------- | ------- |\n\n| Applicability: | Jabiru Aircraft models UL-C, UL-D, J160-C, LSA 55/2K, LSA 55/2J, Jabiru ST, LSA 55/3J and Jabiru ST3 - all serial numbers.Note 1: Aircraft registered with RA-Aus are not subject to this AD provided Civil Aviation Orders 95.10, 95.32 and 95.55 are complied with.                        |\n| -------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Replace each AN4 wing attachment bolt (and remove replaced bolt from service) in accordance with Jabiru Aircraft Service Bulletin JSB 037-1 as in force from time to time.Note 2: Any repairs or modifications to the aircraft will need to be carried out in accordance with approved data. |\n| Compliance:    | Before or upon reaching 2000 hours time-in-service.For aircraft which have already reached 2000 hours time-in-service, before the next 100-hour or annual maintenance inspection, whichever occurs first.                                                                                    |\n|                | This AD commences on 22 May 2017.                                                                                                                                                                                                                                                            |\n| Background:    | Whilst carrying out the 5000 hourly inspection on two Jabiru aircraft it was found that one of the AN 4 wing attachment bolts was broken. As a result of this defect, Jabiru Aircraft issued JSB 037-1 to place a life limit on AN 4 bolts used in the wing attachment joint.                |\n\n![VAN DIJK_P](image.001.jpeg)\n\nPieter van Dijk  \nDelegate of the Civil Aviation Safety Authority\n\n10 May 2017","sortOrder":0},{"sectionNumber":"AD/JABIRU/2","sectionType":"part","heading":"AD/JABIRU/2","content":"## AD/JABIRU/2","sortOrder":1},{"sectionNumber":"Wing Attachment Bolts - Life Limit","sectionType":"part","heading":"Wing Attachment Bolts - Life Limit","content":"## Wing Attachment Bolts - Life Limit","sortOrder":2},{"sectionNumber":"10/2017","sectionType":"part","heading":"10/2017","content":"## 10/2017","sortOrder":3}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This AD maintains its original narrow scope — addressing a specific safety defect in specific aircraft models. It has not expanded beyond the original intent of mandating bolt replacement to prevent wing attachment failures."},"complexity_factors":["Single, specific mechanical component targeted (AN4 wing attachment bolts)","Straightforward compliance trigger: 2000 hours time-in-service or next inspection","Only 7 aircraft models listed in applicability","Single cross-reference to manufacturer service bulletin (JSB 037-1)","One exemption clause for RA-Aus registered aircraft","No nested definitions, no conditional logic beyond the basic timing rule","Total length: approximately 250 words"],"plain_english_summary":"This CASA Airworthiness Directive mandates replacing AN4 wing attachment bolts on specified Jabiru light‑aircraft models before they reach 2,000 flight hours (or at next inspection if already over) after broken bolts were found during inspections. \n\nIt affects owners, operators and maintenance engineers of the listed Jabiru aircraft registered with CASA (not RA‑Aus recreational aircraft). It makes Jabiru’s service bulletin action legally required to prevent catastrophic wing detachment."},"flash_summary_failed":{"failed":true,"reason":"A positive credit balance is required for all requests, including BYOK, so fallback providers remain available. Add credits at https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Fmodal%3Dtop-up to continue.","source":"analysis-cron"},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":true,"description":"This AD introduces a new life limit on AN4 wing-attachment bolts where none is specified in the instrument text prior to the AD: operators must replace bolts by 2,000 hours TIS and follow JSB 037-1 (Requirement/Compliance). The Background identifies a broken bolt discovery as the reason for the life‑limit. Effectively, maintenance obligations and costs shift to aircraft owners/operators, while RA‑Aus aircraft remain conditionally exempt (Applicability/Background)."},"complexity_factors":["Single, specific mandatory action: replace AN4 wing attachment bolts (Requirement).","Clear compliance threshold and timing: 2000 hours TIS, or next 100‑hour/annual inspection if already exceeded (Compliance) — requires accurate hour tracking.","Dependence on external technical document: replacements must follow Jabiru Service Bulletin JSB 037-1 (Requirement) — introduces reliance on manufacturer-issued approved data and its revisions.","Exemption path for RA-Aus registrations conditioned on compliance with Civil Aviation Orders 95.10, 95.32 and 95.55 (Applicability) — creates a parallel compliance check.","Obligation to remove replaced bolts from service (Requirement) — adds disposal/recordkeeping burden.","Regulatory provenance and enforcement by CASA delegate (signature/date) introduces administrative oversight but limited legislative complexity (Background/commencement)."],"plain_english_summary":"Requires owners/operators of specified Jabiru aeroplane models to replace each AN4 wing-attachment bolt by 2,000 hours time-in-service (or at the next 100‑hour/annual inspection if that time is already exceeded), following Jabiru Service Bulletin JSB 037-1, and to remove replaced bolts from service. Owners/operators pay parts and labour; the Civil Aviation Safety Authority (delegate) issued the AD; RA-Aus‑registered aircraft are exempt only if they comply with the listed Civil Aviation Orders."}},"importantCases":[],"_links":{"self":"/api/acts/ad-jabiru-2-wing-attachment-bolts-life-limit","history":"/api/acts/ad-jabiru-2-wing-attachment-bolts-life-limit/history","analysis":"/api/acts/ad-jabiru-2-wing-attachment-bolts-life-limit/analysis","conflicts":"/api/acts/ad-jabiru-2-wing-attachment-bolts-life-limit/conflicts","importantCases":"/api/acts/ad-jabiru-2-wing-attachment-bolts-life-limit/important-cases","documents":"/api/acts/ad-jabiru-2-wing-attachment-bolts-life-limit/documents"}}