{"id":"F2006B10957","name":"AD/JETSTREAM/88 - Steering Actuator Piston Rod","slug":"ad-jetstream-88-steering-actuator-piston-rod","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":56524,"registerId":"commonwealth-F2006B10957-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.002.png)\n\n![](image.002.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.","sortOrder":0},{"sectionNumber":"AD/JETSTREAM/88 Steering Actuator Piston","sectionType":"part","heading":"AD/JETSTREAM/88 Steering Actuator Piston Rod 8/2000","content":"# AD/JETSTREAM/88 Steering Actuator Piston Rod 8/2000\n\nApplicability: All British Aerospace Regional Aircraft HP137 Mk 1 Jetstream Series 200, 3100 and 3200 series aircraft.\n\nRequirement: Replace the nose landing gear steering actuator in accordance with the Accomplishment Instructions in British Aerospace Service Bulletin 32-JA000342 dated May 5/2000.\n\nNote: UK CAA AD 004-05-2000 refers.\n\nCompliance: Within 3000 landings after the effective date of this Directive but no later than 30 October 2001.\n\nThis Airworthiness Directive becomes effective on 10 August 2000.\n\nBackground: Failures have been reported at the undercut on the base of the eye end thread of the nose landing gear steering jack. This Directive mandates incorporation of a modified steering jack piston that is more tolerant to bending loads.\n\n![Signature of Eugene Paul Holzapfel Delegate of the Civil Aviation Safety Authority](image.003.png)  \n\nEugene Paul Holzapfel\n\nDelegate of the Civil Aviation Safety Authority 23 June 2000\n\n![](image.002.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 12 July 2000.","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 AD maintains its original narrow scope — addressing a specific mechanical failure in a specific aircraft type. There is no evidence of scope creep; it targets exactly the unsafe condition described in the background."},"complexity_factors":["Single, unambiguous applicability clause covering specific aircraft models","One clear requirement referencing an external technical standard (Service Bulletin)","Simple compliance deadline with dual trigger (flight cycles or calendar date)","No defined terms section, no cross-references to other legislation beyond the enabling regulation (CAR 1998 subreg 39.1(1))","No conditional logic, exceptions, or nested provisions","Straightforward factual background with single technical failure mode described"],"plain_english_summary":"This AD mandates replacement of the nose-landing-gear steering actuator piston rod on specified British Aerospace Jetstream models because the original part has been cracking and can cause loss of steering during taxi, takeoff or landing. It affects owners/operators of Jetstream Series 200, 3100 and 3200 and must be done per BA Service Bulletin 32-JA000342. Compliance is mandatory within 3,000 landings after 10 Aug 2000 or by 30 Oct 2001, whichever is sooner."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive implements a targeted safety correction consistent with its stated purpose (correcting reported steering jack thread/base undercut failures). It does not broaden applicability beyond the listed Jetstream models or expand regulatory powers; it mandates a part replacement within a defined landing/count or date, aligning with the original corrective intent."},"complexity_factors":["Single, specific corrective action: mandatory replacement of the steering actuator piston (low procedural complexity).","Limited applicability: applies only to Jetstream HP137 Mk 1 Series 200, 3100 and 3200 aircraft (reduces regulatory breadth).","External technical instructions: compliance requires following British Aerospace Service Bulletin 32-JA000342 (dependency on manufacturer procedures).","Time/usage compliance metric: deadline set as either 3,000 landings or a calendar date (requires tracking landing counts/logs).","Operational disruption: replacement may require downtime and parts availability, affecting scheduling and costs for operators.","Reference to foreign AD (UK CAA AD 004-05-2000): indicates harmonisation with overseas authority but adds cross-reference for technical background."],"plain_english_summary":"This directive requires operators of British Aerospace Regional Aircraft HP137 Mk 1 Jetstream Series 200, 3100 and 3200 to replace the nose‑landing‑gear steering actuator piston rod with a modified piston, following British Aerospace Service Bulletin 32-JA000342. It responds to reported failures at the eye‑end thread undercut and mandates replacement within 3,000 landings or by 30 October 2001. Aircraft owners/operators pay for and must carry out the replacement to maintain airworthiness."}},"importantCases":[],"_links":{"self":"/api/acts/ad-jetstream-88-steering-actuator-piston-rod","history":"/api/acts/ad-jetstream-88-steering-actuator-piston-rod/history","analysis":"/api/acts/ad-jetstream-88-steering-actuator-piston-rod/analysis","conflicts":"/api/acts/ad-jetstream-88-steering-actuator-piston-rod/conflicts","importantCases":"/api/acts/ad-jetstream-88-steering-actuator-piston-rod/important-cases","documents":"/api/acts/ad-jetstream-88-steering-actuator-piston-rod/documents"}}