{"id":"F2006B10775","name":"AD/IAI-A/18 - Nose Wheel Steering Assembly Brackets","slug":"ad-iai-a-18-nose-wheel-steering-assembly-brackets","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":56229,"registerId":"commonwealth-F2006B10775-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\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 CASR 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\n![](image.001.png)  \n\nIsrael Aircraft Industries 1125 (Astra) Series Aeroplanes","sortOrder":0},{"sectionNumber":"AD/IAI-A/18 Nose Wheel Steering Assembly","sectionType":"part","heading":"AD/IAI-A/18 Nose Wheel Steering Assembly Brackets 1/2004","content":"# AD/IAI-A/18 Nose Wheel Steering Assembly Brackets 1/2004\n\nDM\n\nApplicability: Models 1125, ASTRA SPX, and G100 aircraft, serial numbers 004, 011 through 147, and 149.\n\nRequirement: Action in accordance with the Accomplishment Instructions of Gulfstream Aerospace Alert Service Bulletin No. 100-32A-275.\n\nNote: Israel CAA AD 32-03-10-05 refers.\n\nCompliance: Within 50 flight hours or 25 landings after 26 November 2003, whichever occurs first.\n\nInspect thereafter in accordance with Aircraft Maintenance Manual Temporary Revision 32-14.\n\nThis Airworthiness Directive becomes effective on 26 November 2003.\n\nBackground: Three operators have reported failure of the nose wheel steering brackets, with one failure resulting in loss of steering control. Investigation found the cause was excessive torsional forces applied to the steering assembly. This can result from towing the aircraft with the torque links connected.\n\n![](image.002.png)  \n\nDavid Villiers\n\nDelegate of the Civil Aviation Safety Authority 20 November 2003\n\n![](image.003.png)","sortOrder":1}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The directive's scope matches its stated purpose: it targets specific IAI 1125/Astra/G100 serial numbers and mandates inspection/maintenance actions specified in Gulfstream Alert Service Bulletin No. 100-32A-275, with a firm initial deadline and ongoing checks per the Aircraft Maintenance Manual (Applicability; Requirement; Compliance; Background). No text indicates expansion or narrowing of that scope beyond these elements."},"complexity_factors":["External technical instructions required: directs compliance with Gulfstream Alert Service Bulletin No. 100-32A-275 (Requirement).","Limited, specific applicability: applies only to named models and specific serial numbers, simplifying scope but requiring serial checks (Applicability).","Short initial compliance window: first inspection due within 50 flight hours or 25 landings, which can strain operators' short-term scheduling (Compliance).","Ongoing inspection regime mandated by Aircraft Maintenance Manual Temporary Revision 32-14, creating recurring maintenance burden (Compliance).","Technical fault diagnosis and potential repair costs tied to nose-wheel steering bracket failure and towing practices—operators bear costs (Background).","Regulatory discretion exercised by CASA delegate under CASR subregulation 39.1(1), but directive is prescriptive in action and timing (header; Requirement; Compliance)."],"plain_english_summary":"This Airworthiness Directive requires operators of specified Israel Aircraft Industries 1125/Astra/SPX/G100 aeroplanes (listed serial numbers) to inspect the nose-wheel steering assembly and follow Gulfstream Alert Service Bulletin No. 100-32A-275, with a first inspection within 50 flight hours or 25 landings and ongoing checks per Aircraft Maintenance Manual Temporary Revision 32-14 (Applicability; Requirement; Compliance; Background). CASA issued it under its CASR power after reports of bracket failures caused by excessive torsional forces when towing with torque links connected (Background; header)."},"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a targeted airworthiness directive addressing a specific mechanical failure mode. It has not expanded beyond its original purpose of correcting unsafe nose wheel steering bracket conditions in the specified aircraft fleet."},"complexity_factors":["Single, specific mechanical issue (nose wheel steering brackets)","Limited applicability (3 specific aircraft models with defined serial number ranges)","Clear, singular compliance action (follow specific service bulletin)","Simple compliance deadline (50 flight hours OR 25 landings, whichever first)","No nested exceptions or conditional logic","Only 1 defined term implicitly referenced (the service bulletin)","No cross-references to other legislation beyond a single note about related Israeli CAA directive"],"plain_english_summary":"This safety order requires owners/operators of Israel Aircraft Industries 1125 Astra, Astra SPX, and G100 airplanes (serials 004, 011–147, 149) to inspect and repair nose‑wheel steering brackets that can fracture from excessive twisting (often from improper towing with torque links connected). Maintenance must follow Gulfstream Alert Service Bulletin No. 100‑32A‑275. Failure can cause complete loss of ground directional control. Compliance: within 50 flight hours or 25 landings after 26 Nov 2003."}},"importantCases":[],"_links":{"self":"/api/acts/ad-iai-a-18-nose-wheel-steering-assembly-brackets","history":"/api/acts/ad-iai-a-18-nose-wheel-steering-assembly-brackets/history","analysis":"/api/acts/ad-iai-a-18-nose-wheel-steering-assembly-brackets/analysis","conflicts":"/api/acts/ad-iai-a-18-nose-wheel-steering-assembly-brackets/conflicts","importantCases":"/api/acts/ad-iai-a-18-nose-wheel-steering-assembly-brackets/important-cases","documents":"/api/acts/ad-iai-a-18-nose-wheel-steering-assembly-brackets/documents"}}