{"id":"F2005L03900","name":"AD/DO 328/38 - Main Landing Gear Trailing Arm Bushes","slug":"ad-do-328-38-main-landing-gear-trailing-arm-bushes","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":39677,"registerId":"commonwealth-F2005L03900-current","compilationNumber":null,"startDate":"2026-04-01","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 328/38 | Main Landing Gear Trailing Arm Bushes | 1/2006 |\n| ------------ | ------------------------------------- | ------ |\n\n| Applicability: | All Model 328-100 aircraft.                                                                                                                                                                                                                                                                                                                                              |\n| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |\n| Requirement:   | Inspect in accordance with Dornier Alert Service Bulletin No. ASB-328-32-019 Revision 1.Note 1: The replacement of the bushes in accordance with SB-328-32-288 terminates the requirements of ASB-328-32-019 Revision 1.Note 2: LBA AD 1997-327/3 refers.                                                                                                                |\n| Compliance:    | At the next C-Check after 19 January 2006, for the initial inspection, unless already accomplished. For aircraft that have completed a C-Check and are over 3,000 flight hours, accomplish an initial inspection at the next Line Check 1 after 19 January 2006, unless already accomplished. Repeat inspections thereafter in accordance with the Requirement document. |\n|                | This Airworthiness Directive becomes effective on 19 January 2006.                                                                                                                                                                                                                                                                                                       |\n| Background:    | The manufacturer received reports of damaged and migrating bushes on the main landing gear trailing arm.                                                                                                                                                                                                                                                                 |\n\n![](image.001.png)  \nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n2 December 2005","sortOrder":0},{"sectionNumber":"AD/DO 328/38","sectionType":"part","heading":"AD/DO 328/38","content":"## AD/DO 328/38","sortOrder":1},{"sectionNumber":"Main Landing Gear Trailing Arm Bushes","sectionType":"part","heading":"Main Landing Gear Trailing Arm Bushes","content":"## Main Landing Gear Trailing Arm Bushes","sortOrder":2},{"sectionNumber":"1/2006","sectionType":"part","heading":"1/2006","content":"## 1/2006","sortOrder":3}],"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, narrow Airworthiness Directive targeting a specific safety defect in a specific aircraft model. The scope remains tightly focused on the original safety issue (damaged/migrating bushes) with no evidence of scope creep."},"complexity_factors":["Single, specific mechanical component addressed (main landing gear trailing arm bushes)","Only one primary requirement: inspect per referenced manufacturer bulletin","Simple conditional compliance timeline based on maintenance check cycles (C-Check vs Line Check 1)","Two brief notes providing alternative compliance paths (replacement terminates requirement; German authority reference)","No defined terms section, no cross-references to other legislation, no nested exceptions","Total length: approximately 150 words of substantive content"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — a mandatory safety order issued by Australia's aviation regulator (CASA). It requires owners and operators of **Dornier 328-100 aircraft** to inspect the **main landing gear trailing arm bushes** (metal sleeves that allow parts to pivot smoothly) for damage or movement.\n\n**What must happen:**\n- **Inspect** the landing gear bushes following the manufacturer's specific instructions (Dornier Alert Service Bulletin ASB-328-32-019 Revision 1)\n- **When:** At the next major maintenance check (C-Check) after 19 January 2006, or sooner if the plane has flown more than 3,000 hours since its last C-Check\n- **Ongoing:** Repeat inspections as specified in the manufacturer's bulletin\n\n**Why it matters:**\nThe manufacturer discovered that these bushes were getting damaged and shifting out of position ('migrating'). This could compromise the landing gear's structural integrity — a serious safety risk during takeoff and landing.\n\n**How to end the requirement:**\nReplacing the bushes per Service Bulletin SB-328-32-288 permanently satisfies this directive — no more inspections needed after that."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"This AD is narrowly focused and remains consistent with its original purpose — to address reported damage and migration of main landing gear trailing arm bushes on Dornier 328-100 aircraft. It prescribes inspections and offers replacement as a terminating action; it does not broaden the subject matter beyond the landing gear bushes or add unrelated requirements. The AD cross-references prior related documents (the service bulletins and an earlier LBA AD), but those references clarify compliance rather than expand scope."},"complexity_factors":["Short single-aircraft-type applicability: only Dornier 328-100 aircraft.","Few provisions: essentially one inspection requirement with a termination option by replacement.","References to external technical documents (ASB-328-32-019 Rev 1 and SB-328-32-288) for procedural detail, increasing off‑document complexity.","Conditional timing rules: initial inspection at next C‑Check after 19 Jan 2006, or at next Line Check 1 for aircraft with prior C‑Check and >3,000 flight hours.","One cross‑reference to another AD (LBA AD 1997-327/3).","No extensive definitions, no multiple nested exceptions, and no complex enforcement or penalty regime in the text provided."],"plain_english_summary":"Operators of Dornier 328‑100 aeroplanes must have the main landing‑gear trailing‑arm bushes inspected per the manufacturer’s ASB‑328‑32‑019 Rev 1, with the initial check at the next C‑Check after 19 Jan 2006 (or next Line Check 1 if the aircraft already had a C‑Check and has >3,000 fh); replacement per SB‑328‑32‑288 terminates the inspection requirement. Effective 19 Jan 2006, this AD affects owners, maintenance organisations and parts suppliers and creates recurring inspection or one‑off replacement costs and associated downtime."}},"importantCases":[],"_links":{"self":"/api/acts/ad-do-328-38-main-landing-gear-trailing-arm-bushes","history":"/api/acts/ad-do-328-38-main-landing-gear-trailing-arm-bushes/history","analysis":"/api/acts/ad-do-328-38-main-landing-gear-trailing-arm-bushes/analysis","conflicts":"/api/acts/ad-do-328-38-main-landing-gear-trailing-arm-bushes/conflicts","importantCases":"/api/acts/ad-do-328-38-main-landing-gear-trailing-arm-bushes/important-cases","documents":"/api/acts/ad-do-328-38-main-landing-gear-trailing-arm-bushes/documents"}}