{"id":"F2006L00430","name":"AD/DO 328/46 - Ground Spoiler Support Arms","slug":"ad-do-328-46-ground-spoiler-support-arms","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":117105,"registerId":"commonwealth-F2006L00430-current","compilationNumber":null,"startDate":"2026-04-03","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 328/46 | Ground Spoiler Support Arms | 3/2006 |\n| ------------ | --------------------------- | ------ |\n\n| Applicability: | Model 328-100 aircraft, serial numbers 3005, 3009, 3016, 3024 through 3027, 3031, 3034 through 3036, 3040 through 3042, 3046, 3048 through 3050, 3054, 3062, 3063, 3066, 3067, 3069, 3071, 3074, 3078 through 3083, 3085, 3086, 3090 through 3098, 3100, 3101, 3103, 3104, 3106, 3107, 3109, 3110, 3112, 3113, 3115, 3117, and 3119. |\n| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |\n| Requirement:   | Inspect Support Arms No. 3 and No. 8 on Ground Spoiler Assemblies No. 1 andNo. 2, in accordance with Dornier 328 Service Bulletin No. SB-328-57-435.Note: LBA AD 2002-258 refers.                                                                                                                                                    |\n| Compliance:    | Upon the accumulation of 4,000 flight cycles. Repeat thereafter at intervals not to exceed 1,000 flight cycles.                                                                                                                                                                                                                      |\n|                | This Airworthiness Directive becomes effective on 16 March 2006.                                                                                                                                                                                                                                                                     |\n| Background:    | The manufacturer received reports of cracks in Ground Spoiler Support Arms No. 3 and No. 8.                                                                                                                                                                                                                                          |\n\n![](image.001.png)  \nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n30 January 2006","sortOrder":0},{"sectionNumber":"AD/DO 328/46","sectionType":"part","heading":"AD/DO 328/46","content":"## AD/DO 328/46","sortOrder":1},{"sectionNumber":"Ground Spoiler Support Arms","sectionType":"part","heading":"Ground Spoiler Support Arms","content":"## Ground Spoiler Support Arms","sortOrder":2},{"sectionNumber":"3/2006","sectionType":"part","heading":"3/2006","content":"## 3/2006","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 specific aircraft. It has not expanded beyond its original purpose of mandating inspections for cracked ground spoiler support arms."},"complexity_factors":["Single, specific mechanical requirement with no conditional exceptions","Only 47 affected aircraft identified by explicit serial number list","Simple compliance timeline: one-time trigger (4,000 cycles) plus fixed recurring interval (1,000 cycles)","No defined terms section or interpretive provisions","Cross-reference to only one external document (manufacturer's Service Bulletin) and one foreign airworthiness directive (LBA AD 2002-258) for context","Total length is approximately 150 words of substantive content"],"plain_english_summary":"This AD mandates inspections of support arms 3 and 8 on ground spoiler assemblies of 47 specified Dornier 328-100 aeroplanes (listed by serial number) after cracks were found. Owners/operators must perform a first inspection at 4,000 flight cycles and repeat every 1,000 cycles per the manufacturer’s Service Bulletin SB-328-57-435. Compliance is mandatory to prevent ground-spoiler failure that could reduce braking effectiveness after landing."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The Directive does not expand or narrow scope beyond addressing reported cracks on specified aircraft. It mandates inspections for the listed serial numbers per the manufacturer's service bulletin and sets repeat intervals; no additional aircraft classes, components or obligations are introduced in the text supplied."},"complexity_factors":["Limited, specific applicability to a defined list of serial numbers (Applicability).","Single technical action required — inspect two named support arms — following a manufacturer's service bulletin (Requirement: Dornier SB‑328‑57‑435).","Cyclic compliance timetable tied to flight cycles (initial at 4,000 cycles; repeat ≤1,000 cycles) adds operational scheduling constraints (Compliance).","Dependence on an external document for inspection procedures and a referenced foreign AD increases procedural linkage (Requirement; Background).","Clear effective date and mandatory nature reduce regulatory interpretation complexity (Compliance)."],"plain_english_summary":"This Directive requires operators of listed Dornier 328‑100 aircraft to inspect ground‑spoiler support arms No. 3 and No. 8 in accordance with Dornier Service Bulletin SB‑328‑57‑435 because the manufacturer reported cracks. Inspections must start at 4,000 flight cycles and repeat no more than every 1,000 cycles; the Civil Aviation Safety Authority made the requirement effective 16 March 2006. Operators bear the inspection and repair costs and must follow the specified maintenance procedure."}},"importantCases":[],"_links":{"self":"/api/acts/ad-do-328-46-ground-spoiler-support-arms","history":"/api/acts/ad-do-328-46-ground-spoiler-support-arms/history","analysis":"/api/acts/ad-do-328-46-ground-spoiler-support-arms/analysis","conflicts":"/api/acts/ad-do-328-46-ground-spoiler-support-arms/conflicts","importantCases":"/api/acts/ad-do-328-46-ground-spoiler-support-arms/important-cases","documents":"/api/acts/ad-do-328-46-ground-spoiler-support-arms/documents"}}