{"id":"F2006L00700","name":"AD/DO 228/7 - Main Landing Gear Axles","slug":"ad-do-228-7-main-landing-gear-axles","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":136718,"registerId":"commonwealth-F2006L00700-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Dornier 228 Series Aeroplanes","sectionType":"division","heading":"Dornier 228 Series Aeroplanes","content":"### Dornier 228 Series Aeroplanes\n\n| AD/DO 228/7 | Main Landing Gear Axles | 4/2006 |\n| ----------- | ----------------------- | ------ |\n\n| Applicability: | Model 228-100, -101, and 228-200, and -201 aircraft, equipped with Main Landing Gear Strut part number A-511000 D00F, A-521000 D00F, A-511000-E00F, orA-521000 E00F.                                                                                    |\n| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Action in accordance with LBA AD 94-042.Note: Dornier Service Bulletin No. 228-214 refers.                                                                                                                                                              |\n| Compliance:    | Before 30 April 2006, unless already accomplished.                                                                                                                                                                                                      |\n|                | This Airworthiness Directive becomes effective on 13 April 2006.                                                                                                                                                                                        |\n| Background:    | The manufacturer received reports of cracked main landing gear axles, which in some cases led to failure of axles at high operating loads. Investigation revealed the cracks were a result of manufacturing defects (grooves) in the axle inner radius. |\n\n![](image.001.png)  \nDavid Punshon  \nDelegate of the Civil Aviation Safety Authority\n\n27 February 2006","sortOrder":0},{"sectionNumber":"AD/DO 228/7","sectionType":"part","heading":"AD/DO 228/7","content":"## AD/DO 228/7","sortOrder":1},{"sectionNumber":"Main Landing Gear Axles","sectionType":"part","heading":"Main Landing Gear Axles","content":"## Main Landing Gear Axles","sortOrder":2},{"sectionNumber":"4/2006","sectionType":"part","heading":"4/2006","content":"## 4/2006","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"},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The AD confines action to the listed Dornier 228 models fitted with the specified strut part numbers to address manufacturing defects in axle inner radii. The text does not indicate any expansion or reduction of that applicability or of the referenced LBA AD’s requirements."},"complexity_factors":["Cross-reference to LBA AD 94-042 — requires users to obtain and follow an external AD rather than containing full procedural detail","Reference to Dornier Service Bulletin No. 228-214 for technical guidance — creates dependency on manufacturer documentation","Applicability limited to specific airframe models and explicit part numbers (A-511000 D00F, A-521000 D00F, A-511000-E00F, A-521000 E00F) — requires accurate parts identification","Safety-critical inspection and potential replacement of main landing gear axles — technical inspections (inner radius grooves) may need specialist skills/equipment","Finite compliance window (effective 13 April 2006; compliance by 30 April 2006) — creates operational scheduling pressures","Potential logistical costs for operators (downtime, parts, labour) because axle defects can require replacement rather than simple repair"],"plain_english_summary":"Requires owners/operators of Dornier 228-100/-101 and 228-200/-201 aircraft fitted with listed main landing gear strut part numbers to carry out the inspections/repairs specified in LBA AD 94-042 (Dornier Service Bulletin No. 228-214 referenced). The measure responds to reported cracks caused by manufacturing grooves in the axle inner radius that can lead to axle failure under high loads; compliance was required by 30 April 2006 and the AD took effect 13 April 2006."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a targeted safety directive addressing a specific mechanical defect in a specific aircraft type. The scope remains precisely limited to the identified manufacturing defect in main landing gear axles."},"complexity_factors":["Very short document (under 300 words)","Only 4 specific part numbers in applicability section","Single compliance requirement referencing external technical documents","No defined terms section","No conditional logic or nested exceptions","Straightforward deadline structure (single date, no phased compliance)","Minimal cross-referencing (only to LBA AD 94-042 and Dornier Service Bulletin 228-214)"],"plain_english_summary":"Mandatory AD ordering immediate inspection and/or replacement of main landing‑gear axles on certain Dornier 228‑100/‑101/‑200/‑201 aircraft because manufacturing grooves in the axle can produce cracks and lead to catastrophic failure.\n\nIt affects operators with the specified main strut part numbers and requires compliance before 30 April 2006 per LBA AD 94‑042 and Dornier Service Bulletin 228‑214 to prevent landing‑gear collapse."}},"importantCases":[],"_links":{"self":"/api/acts/ad-do-228-7-main-landing-gear-axles","history":"/api/acts/ad-do-228-7-main-landing-gear-axles/history","analysis":"/api/acts/ad-do-228-7-main-landing-gear-axles/analysis","conflicts":"/api/acts/ad-do-228-7-main-landing-gear-axles/conflicts","importantCases":"/api/acts/ad-do-228-7-main-landing-gear-axles/important-cases","documents":"/api/acts/ad-do-228-7-main-landing-gear-axles/documents"}}