{"id":"F2007L00376","name":"AD/DO 328/68 - Main Landing Gear Side Brace Assembly","slug":"ad-do-328-68-main-landing-gear-side-brace-assembly","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":63400,"registerId":"commonwealth-F2007L00376-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Dornier 328 Series Aeroplanes","sectionType":"division","heading":"Dornier 328 Series Aeroplanes","content":"### Dornier 328 Series Aeroplanes\n\n| AD/DO 328/68 | Main Landing Gear Side Brace Assembly | 3/2007 |\n| ------------ | ------------------------------------- | ------ |\n\n| Applicability: | Dornier 328-100 and 328-300 aircraft.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |\n| -------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | 1. Unless previously accomplished inspect the MLG side brace assembly in accordance with the instructions of 328 Support Services GmbH Service Bulletin SB-328-32-476 Revision 1 (for 328-100) or SB-328J-32-226 Revision 1 (for 328-300), as applicable.2. If any discrepancies are detected during the inspection as required by Requirement 1 of this AD, replace or repair the MLG side brace assembly in accordance with the instructions of Messier-Dowty Component Maintenance Manual (CMM) 32-11-12 (for 328-1 00), 32-11-84 or 32-11-86 (for 328-300), as applicable.Note: EASA AD 2007-0019 dated 16 January 2007 refers. |\n| Compliance:    | 1. Within 3 months after the effective date of this AD.2. Before further flight.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |\n|                | This Airworthiness Directive becomes effective on 15 March 2007.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |\n| Background:    | During maintenance, parts of the Main Landing Gear (MLG) side brace assembly have been found corroded, resulting in heavy operation of the MLG system. To avoid heavy operation or improper function of the MLG system, this AD requires the inspection and, if necessary, replacement or repairs of the MLG side brace assembly.                                                                                                                                                                                                                                                                                                   |\n\n![](image.001.png)  \nJames Coyne  \nDelegate of the Civil Aviation Safety Authority\n\n1 February 2007","sortOrder":0},{"sectionNumber":"AD/DO 328/68","sectionType":"part","heading":"AD/DO 328/68","content":"## AD/DO 328/68","sortOrder":1},{"sectionNumber":"Main Landing Gear Side Brace Assembly","sectionType":"part","heading":"Main Landing Gear Side Brace Assembly","content":"## Main Landing Gear Side Brace Assembly","sortOrder":2},{"sectionNumber":"3/2007","sectionType":"part","heading":"3/2007","content":"## 3/2007","sortOrder":3}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"Based solely on the text provided, the directive’s scope matches its stated purpose: address corrosion found in MLG side brace assemblies by mandating inspection and remedial action. There is no text indicating an expansion or narrowing of scope beyond the described inspection and repair/replacement requirements."},"complexity_factors":["Narrow applicability (only Dornier 328-100 and 328-300) reduces scope and complexity (Applicability).","Mandates inspections per specific service bulletins (SB-328-32-476 Rev 1 for 328-100; SB-328J-32-226 Rev 1 for 328-300), creating dependency on external documents (Requirement 1).","Requires repair or replacement following particular Messier-Dowty Component Maintenance Manuals (CMM 32-11-12; 32-11-84; 32-11-86), which imposes technical compliance obligations on maintenance organisations (Requirement 2).","Two-tier compliance timeline: inspection within 3 months, and any corrective action must be completed before further flight — operational scheduling constraint (Compliance 1–2).","Ambiguity in what constitutes a ‘discrepancy’ means maintenance judgement is required, creating some operator discretion and potential assessment disputes (Requirement 2).","Potential logistical burdens: parts availability, qualified labour and downtime for repair/replace tasks (implied by Requirement 2 and Background).","Cross-reference to EASA AD 2007-0019 introduces an external regulatory linkage for interpretation and traceability (Note).","Effective date and short lead time (effective 15 March 2007) create implementation timing pressure (Compliance / Effective date)."],"plain_english_summary":"This directive requires operators of Dornier 328-100 and 328-300 aircraft to inspect the main landing gear (MLG) side brace assembly using specific manufacturer service bulletins and to repair or replace parts per Messier-Dowty maintenance manuals if any defects are found. Operators and their maintenance organisations must do the inspection within three months and must complete any repairs or replacements before the aircraft flies again. The measure aims to prevent heavy or improper MLG operation caused by corrosion."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard single-issue Airworthiness Directive addressing a specific safety defect in specific aircraft models. The scope remains tightly focused on the corrosion issue in the Main Landing Gear side brace assembly as originally intended."},"complexity_factors":["Very short document (under 300 words)","Only 2 substantive requirements with clear conditional logic (inspect; repair only if discrepancies found)","Minimal defined terms (only standard aviation abbreviations: MLG, AD, CMM, SB)","No nested exceptions or cross-references to other legislation","Single compliance pathway with straightforward timeline (3 months, or before flight if defects found)","References only external technical documents (Service Bulletins and Maintenance Manuals) rather than legislative cross-references"],"plain_english_summary":"This CASA Airworthiness Directive requires owners/operators/maintainers of Dornier 328‑100 and 328‑300 aircraft to inspect the Main Landing Gear side‑brace assembly for corrosion per the manufacturer’s service bulletins. Inspections are due within three months of 15 March 2007; any corrosion must be repaired or the part replaced before further flight. The AD addresses corrosion that can cause heavy or improper landing‑gear operation."},"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"}},"importantCases":[],"_links":{"self":"/api/acts/ad-do-328-68-main-landing-gear-side-brace-assembly","history":"/api/acts/ad-do-328-68-main-landing-gear-side-brace-assembly/history","analysis":"/api/acts/ad-do-328-68-main-landing-gear-side-brace-assembly/analysis","conflicts":"/api/acts/ad-do-328-68-main-landing-gear-side-brace-assembly/conflicts","importantCases":"/api/acts/ad-do-328-68-main-landing-gear-side-brace-assembly/important-cases","documents":"/api/acts/ad-do-328-68-main-landing-gear-side-brace-assembly/documents"}}