{"id":"F2008L01575","name":"AD/DO 228/14 - Nose Landing Gear Strut Support","slug":"ad-do-228-14-nose-landing-gear-strut-support","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":73712,"registerId":"commonwealth-F2008L01575-current","compilationNumber":null,"startDate":"2026-04-02","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 228/14 | Nose Landing Gear Strut Support | 7/2008 DM |\n| ------------ | ------------------------------- | --------- |\n\n| Applicability: | Model 228-100, -101, -200, -201, 202, and -212 aircraft.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |\n| -------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | 1. Action in accordance with the requirements of RUAG Alert Service Bulletin ASB-228-272.2. Action in accordance with the requirements of RUAG Service BulletinSB-228-274.Note: LBA AD D-2008-149 refers.                                                                                                                                                                                                                                                                                                                                                                                                      |\n| Compliance:    | 1. For aircraft with a nose landing gear (NLG) part number A-531000F00F or any other NLG with exchange cylinder part number 531020F00C, installed:a. With the affected NLG having accumulated more than 4,000 flight cycles, or unknown flight cycles:Accomplish within 50 landings after 16 May 2008, unless already accomplished.b. With the affected NLG having accumulated less than 4,000 flight cycles:Accomplish within 500 landings after 16 May 2008.2. For aircraft with all other NLG variants installed:Accomplish within 600 flight cycles or 6 months after 16 May 2008, whichever occurs first. |\n|                | This Airworthiness Directive becomes effective on 16 May 2008.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |\n\n| Background: | The LBA received a report of an incident where the NLG strut support was fractured and detached. Investigation revealed that the cause of the fracture was the result of a welding process error during manufacture. |\n| ----------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n\n![](image.001.png)  \nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n14 May 2008","sortOrder":0},{"sectionNumber":"AD/DO 228/14","sectionType":"part","heading":"AD/DO 228/14","content":"## AD/DO 228/14","sortOrder":1},{"sectionNumber":"Nose Landing Gear Strut Support","sectionType":"part","heading":"Nose Landing Gear Strut Support","content":"## Nose Landing Gear Strut Support","sortOrder":2},{"sectionNumber":"7/2008 DM","sectionType":"part","heading":"7/2008 DM","content":"## 7/2008 DM","sortOrder":3}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This is a standard single-issue Airworthiness Directive addressing a specific manufacturing defect in a specific aircraft type. The scope remains tightly focused on the nose landing gear strut support welding defect as originally identified."},"complexity_factors":["Multiple conditional compliance deadlines based on part numbers and flight cycle accumulation","Cross-reference to two external technical documents (RUAG Alert Service Bulletin ASB-228-272.2 and SB-228-274) without reproducing their content","Reference to German aviation authority document (LBA AD D-2008-149)","Nested conditions: part number AND flight cycle count determine deadline","Specific technical terminology (flight cycles, landings, part numbers) requiring aviation knowledge to interpret"],"plain_english_summary":"This AD requires owners/operators of certain Dornier 228 aircraft to inspect and repair a manufacturing welding defect in the nose landing‑gear strut support that can crack and fail, risking gear collapse. Compliance follows RUAG technical bulletins and must be done within staged deadlines based on the installed part’s identity and flight cycles. It’s mandatory: aircraft may not operate until the required inspections/repairs are completed."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"No scope change indicated. The AD applies to the listed Dornier 228 models and to aircraft with the specified nose landing gear part numbers, requiring actions per the RUAG service bulletins cited (Applicability; Requirement; Compliance)."},"complexity_factors":["Cross‑references to external technical documents increase compliance steps (Requirement: RUAG ASB‑228‑272.2 and SB‑228‑274).","Different deadlines and metrics apply depending on NLG part number and accumulated usage (Compliance: categories 1a, 1b, 2).","Mix of units for compliance timing (landings, flight cycles, months) requires accurate operator records and conversions (Compliance).","Immediate effective date creates short implementation timelines for affected operators (Compliance: effective 16 May 2008).","Clear manufacturing cause reduces technical investigatory ambiguity but still requires physical inspection/repair actions (Background)."],"plain_english_summary":"**What it does:** This Airworthiness Directive orders inspection and corrective action on the nose landing gear strut support for specified Dornier 228 models after a manufacturing weld defect caused a fracture. It requires operators to follow RUAG service bulletins to check and, if necessary, repair or replace the part. \n\n**Who it affects and why it matters:** Owners/operators of the listed Dornier 228 aircraft and those with the specified NLG parts must comply within short, part‑dependent deadlines to reduce risk of strut failure; the AD took effect 16 May 2008."},"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-228-14-nose-landing-gear-strut-support","history":"/api/acts/ad-do-228-14-nose-landing-gear-strut-support/history","analysis":"/api/acts/ad-do-228-14-nose-landing-gear-strut-support/analysis","conflicts":"/api/acts/ad-do-228-14-nose-landing-gear-strut-support/conflicts","importantCases":"/api/acts/ad-do-228-14-nose-landing-gear-strut-support/important-cases","documents":"/api/acts/ad-do-228-14-nose-landing-gear-strut-support/documents"}}