{"id":"F2006B08661","name":"AD/CRESCO/2 - Wing Spar Web","slug":"ad-cresco-2-wing-spar-web","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":51752,"registerId":"commonwealth-F2006B08661-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# AIRWORTHINESS DIRECTIVE\n\n![](image.001.png)\n\n![](image.001.png)  \nFor the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CAR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.\n\nPacific Aerospace Corporation Cresco Series Aeroplanes","sortOrder":0},{"sectionNumber":"AD/CRESCO/2 Wing Spar Web 5/2001","sectionType":"part","heading":"AD/CRESCO/2 Wing Spar Web 5/2001","content":"# AD/CRESCO/2 Wing Spar Web 5/2001\n\nApplicability: Cresco 08-600 aircraft in agricultural operations, and not incorporating modification PAC/CR/0317.\n\nRequirement: Inspect inner wing main spar webs in accordance with Pacific Aerospace Corporation Service Bulletin PACSB/CR/026, dated 15 December 2000. Accomplish any necessary repairs before further flight in accordance with the Requirement document.\n\nNote: New Zealand CAA AD DCA/CRESCO/2 refers.\n\nCompliance: Upon accumulating 3,000 hours total time in service. For aircraft that have exceeded 3,000 hours total time in service, within 150 hours time in service after 17 May 2001, unless already accomplished.\n\nThis Airworthiness Directive becomes effective on 17 May 2001.\n\nBackground: The NZ CAA requires inspection of inner wing main spar webs for cracking and inspection of inner wing main spar web to spar cap rivets.\n\n![Signature of David Alan Villiers Delegate of the Civil Aviation Safety Authority](image.002.png)  \n\nDavid Alan Villiers\n\nDelegate of the Civil Aviation Safety Authority 2 April 2001\n\n![](image.001.png)","sortOrder":1}],"analysis":{"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"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard airworthiness directive with a narrow, targeted scope addressing a specific structural defect in a specific aircraft type. The scope matches the original intent of ensuring flight safety for this particular model."},"complexity_factors":["Single, clearly defined applicability (one aircraft model, one operational use, one exclusion)","Only one substantive requirement (inspect per referenced service bulletin)","Simple compliance trigger (flight hours threshold or fixed date)","No defined terms section — uses plain language and direct references to external documents","No nested exceptions or conditional logic beyond the applicability exclusion","Total length: approximately 250 words of operative text"],"plain_english_summary":"CASA requires owners and operators of Cresco 08-600 agricultural aircraft (unless fitted with modification PAC/CR/0317) to inspect the inner wing main spar web for cracks and loose rivets per the manufacturer’s service bulletin, at 3,000 total hours or within 150 hours after 17 May 2001 if already over that threshold. Any defects must be repaired before flight—this follows New Zealand findings of cracked spar webs that could cause catastrophic structural wing failure."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The AD aligns with the New Zealand CAA requirement and sets a targeted inspection and repair obligation for Cresco 08-600 agricultural aircraft not modified by PAC/CR/0317. It does not expand applicability beyond that set (Applicability), nor introduce additional ongoing regulatory duties beyond the one-time inspection/repair at the stated hours (Requirement and Compliance)."},"complexity_factors":["Narrow applicability: only Cresco 08-600 aircraft in agricultural operations and excluding aircraft with modification PAC/CR/0317 (clear trigger reduces scope).","Single mandatory action: inspect inner wing main spar webs and web-to-spar-cap rivets per Service Bulletin PACSB/CR/026 and repair before further flight (limited technical steps).","External reference dependency: requires access to and following a manufacturer Service Bulletin (PACSB/CR/026 dated 15 Dec 2000) which is an external document operators must obtain and follow.","Time-based compliance with a retrospective catch-up window: inspection at 3,000 hours or within 150 hours after 17 May 2001 for aircraft already past 3,000 hours (administrative tracking burden).","Cross-jurisdictional reference: notes New Zealand CAA AD DCA/CRESCO/2, indicating alignment with another regulator but no new procedural layers in the text.","Immediate safety obligation: repairs must be accomplished before further flight, creating operational downtime and repair-cost exposure for operators."],"plain_english_summary":"This Airworthiness Directive requires owners/operators of Pacific Aerospace Cresco 08-600 aircraft used in agricultural operations (unless they have modification PAC/CR/0317) to inspect the inner wing main spar webs and the web‑to‑spar‑cap rivets following Pacific Aerospace Service Bulletin PACSB/CR/026 (15 Dec 2000) and to repair any defects before further flight. Compliance is at 3,000 total hours or, if already beyond that, within 150 hours after 17 May 2001; operators bear the inspection and repair costs and must retain evidence of compliance."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cresco-2-wing-spar-web","history":"/api/acts/ad-cresco-2-wing-spar-web/history","analysis":"/api/acts/ad-cresco-2-wing-spar-web/analysis","conflicts":"/api/acts/ad-cresco-2-wing-spar-web/conflicts","importantCases":"/api/acts/ad-cresco-2-wing-spar-web/important-cases","documents":"/api/acts/ad-cresco-2-wing-spar-web/documents"}}