{"id":"F2006L00435","name":"AD/DO 328/41 - Ground Spoiler","slug":"ad-do-328-41-ground-spoiler","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":117115,"registerId":"commonwealth-F2006L00435-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 328/41 | Ground Spoiler | 3/2006 |\n| ------------ | -------------- | ------ |\n\n| Applicability: | Model 328-100 aircraft, serial numbers 3005, 3009, 3016, 3023 through 3027, 3031, 3034 through 3036, 3040 through 3042, 3046, 3048 through 3050, 3054, 3058, 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.Any Model 328-100 aircraft with a serial number not listed above and with the Ground Spoiler installed, active or inactive, is also affected. |\n| -------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Action in accordance with Dornier 328 Service Bulletin No. SB-328-57-439Revision 1.Note: LBA AD 2003-357 refers.                                                                                                                                                                                                                                                                                                                                                                        |\n| Compliance:    | Before 31 March 2006, unless already accomplished.                                                                                                                                                                                                                                                                                                                                                                                                                                      |\n|                | This Airworthiness Directive becomes effective on 16 March 2006.                                                                                                                                                                                                                                                                                                                                                                                                                        |\n| Background:    | An interference problem may exist between the bottom of the ground spoiler trailing edge and the upper surface of the flap. This condition could lead to a higher pre-tension at ground spoiler bearing arm No.3 and No. 8, which could result in premature cracking.                                                                                                                                                                                                                   |\n\n![](image.001.png)  \nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n30 January 2006","sortOrder":0},{"sectionNumber":"AD/DO 328/41","sectionType":"part","heading":"AD/DO 328/41","content":"## AD/DO 328/41","sortOrder":1},{"sectionNumber":"Ground Spoiler","sectionType":"part","heading":"Ground Spoiler","content":"## Ground Spoiler","sortOrder":2},{"sectionNumber":"3/2006","sectionType":"part","heading":"3/2006","content":"## 3/2006","sortOrder":3}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard, narrow Airworthiness Directive targeting a specific mechanical defect in a specific aircraft type. It has not expanded beyond its original safety purpose."},"complexity_factors":["Very short document (approximately 200 words of substantive content)","Only 1 defined term implicitly used (Airworthiness Directive itself)","No cross-references to other legislation — only references to external technical documents (Service Bulletin and German LBA AD)","Simple conditional logic: if aircraft is in the listed serial numbers OR has the ground spoiler installed, then compliance is required","Single compliance deadline with one exception clause ('unless already accomplished')","No nested exceptions or complex procedural requirements"],"plain_english_summary":"This CASA Airworthiness Directive requires owners/operators of specified Dornier 328-100 aeroplanes (and any 328‑100 fitted with the affected ground spoiler) to inspect and repair the ground spoiler per Dornier Service Bulletin SB‑328‑57‑439 Rev 1.  \n\nThe fix prevents trailing‑edge rubbing that can over‑stress bearing arms 3 and 8, risking spoiler failure and reduced stopping performance; work must be done before 31 March 2006."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The AD's scope matches its stated purpose in the text: it targets interference between the ground spoiler and flap on the listed serial numbers and any 328-100 with a ground spoiler. The instrument confines action to following the referenced service bulletin by the specified date; no change of scope from that stated intent is indicated in the document provided."},"complexity_factors":["Narrow applicability: specific serial numbers plus any 328-100 with a ground spoiler (identification of affected aircraft required).","Single corrective action: compliance requires following an external technical document (Dornier SB-328-57-439 Revision 1).","Fixed statutory deadline (31 March 2006) creates scheduling pressure for operators and maintenance providers.","Potential operational/maintenance resource needs (inspection, adjustment or repair) depending on findings in the SB.","Regulatory enforcement by CASA adds legal compliance risk if work is not completed by the deadline."],"plain_english_summary":"This Airworthiness Directive requires operators of Dornier 328-100 aeroplanes (the listed serial numbers, and any other 328-100 with a ground spoiler fitted) to carry out the work specified in Dornier Service Bulletin SB-328-57-439 Revision 1 to eliminate an interference between the ground spoiler trailing edge and the flap. Compliance is mandatory by 31 March 2006 (AD effective 16 March 2006). Operators/owners bear the cost and must schedule the maintenance; the Civil Aviation Safety Authority enforces the directive."},"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-328-41-ground-spoiler","history":"/api/acts/ad-do-328-41-ground-spoiler/history","analysis":"/api/acts/ad-do-328-41-ground-spoiler/analysis","conflicts":"/api/acts/ad-do-328-41-ground-spoiler/conflicts","importantCases":"/api/acts/ad-do-328-41-ground-spoiler/important-cases","documents":"/api/acts/ad-do-328-41-ground-spoiler/documents"}}