{"id":"F2006L03613","name":"AD/AT 800/8 - Hopper Rinse Tank Shelf Attachment","slug":"ad-at-800-8-hopper-rinse-tank-shelf-attachment","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":137296,"registerId":"commonwealth-F2006L03613-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Airtractor 800 Series Aeroplanes","sectionType":"division","heading":"Airtractor 800 Series Aeroplanes","content":"### Airtractor 800 Series Aeroplanes\n\n| AD/AT 800/8 | Hopper Rinse Tank Shelf Attachment | 12/2006 |\n| ----------- | ---------------------------------- | ------- |\n\n| Applicability: | Model AT-802 and AT-802A aircraft, serial numbers 802/802A-0001 through 802/802A-0219.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |\n| -------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | 1. Inspect the three attach angles on the firewall mounted hopper rinse tank shelf for damage and/or cracks in accordance with Snow Engineering Co. Service Letter (SL) No. 248, dated 31 August 2005.If damage and/or cracks are evident during any inspection, before further flight, replace all three attach angles with steel attach angles, part number 60568-3 (or FAA-approved equivalent part number), in accordance with SL No. 248.2. Do not install aluminium attach angles on the hopper rinse tank shelf.Note 1: Replacement of aluminium attach angles with steel attach angles terminates the repetitive inspection requirement of this Directive.Note 2: FAA AD 2006-20-10 Amdt 39-14779 refers. |\n| Compliance:    | 1. Within 100 hours time in service after 23 November 2006, and thereafter at intervals not to exceed 100 hours time in service until steel attach angles, part number 60568-3(or FAA-approved equivalent part number), are installed.2. As of 23 November 2006.                                                                                                                                                                                                                                                                                                                                                                                                                                                  |\n|                | This Airworthiness Directive becomes effective on 23 November 2006.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |\n| Background:    | The FAA received a report of an uncommanded change in an aircraft’s engine power setting. Investigation revealed the cause as failure of the attach angles and separation of the hopper rinse tank shelf from the firewall, which shifted the engine power cables.                                                                                                                                                                                                                                                                                                                                                                                                                                                |\n\n![](image.001.png)  \nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n12 October 2006","sortOrder":0},{"sectionNumber":"AD/AT 800/8","sectionType":"part","heading":"AD/AT 800/8","content":"## AD/AT 800/8","sortOrder":1},{"sectionNumber":"Hopper Rinse Tank Shelf Attachment","sectionType":"part","heading":"Hopper Rinse Tank Shelf Attachment","content":"## Hopper Rinse Tank Shelf Attachment","sortOrder":2},{"sectionNumber":"12/2006","sectionType":"part","heading":"12/2006","content":"## 12/2006","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":"Scope follows the instrument text: it applies only to AT‑802/AT‑802A aircraft serial numbers 802/802A‑0001 through ‑0219 and prescribes inspection and replacement measures for the hopper rinse tank shelf attach angles (Applicability; Requirement; Compliance). The directive does not expand applicability beyond those serial numbers or add additional systems."},"complexity_factors":["Narrow applicability by serial number range (Applicability)","Specific mandated inspection interval and repeat requirement (Compliance: 100 hours TIS)","Mandatory part replacement with specified part number or FAA‑approved equivalent (Requirement: part no. 60568‑3)","Termination condition for repetitive inspections once steel parts installed (Requirement Note 1)","Dependence on an external service letter for inspection/replacement procedure (Requirement: Snow Engineering SL No. 248)","Cross‑reference to an FAA Airworthiness Directive (Requirement Note 2) which may affect acceptable parts/procedures"],"plain_english_summary":"Requires owners/operators of Airtractor AT‑802 and AT‑802A aircraft (serials 802/802A‑0001 through ‑0219) to inspect three attach angles on the firewall‑mounted hopper rinse tank shelf for damage/cracks and, if any are found, replace all three with steel attach angles part no. 60568‑3 (or FAA‑approved equivalent). Inspections must occur within 100 hours TIS and every 100 hours until steel angles are installed; installation of the steel angles ends the inspection cycle. The action responds to a reported failure that moved engine power cables (Requirement; Compliance; Background). Owners pay for inspections and replacements and face a recurring 100‑hour compliance burden until replacement."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This AD maintains its original, narrow scope. It addresses a specific mechanical failure mode (aluminium attach angle fatigue/cracking) on a specific component (hopper rinse tank shelf) for a limited aircraft population. There is no evidence of scope creep; the directive remains tightly focused on the safety issue identified in the FAA investigation."},"complexity_factors":["Single, specific mechanical issue (three attach angles on one component)","Clear, linear compliance path: inspect → if damaged, replace → if replaced with steel, inspections stop","Only 2 defined compliance deadlines (initial 100 hours, then recurring 100 hours)","Minimal cross-referencing (one FAA AD and one Service Letter referenced)","Narrow applicability (specific model range and serial numbers)","No nested exceptions or conditional logic beyond the basic 'if damaged, then replace' structure"],"plain_english_summary":"This CASA Airworthiness Directive applies to Air Tractor AT-802 and AT-802A aircraft (serials 0001–0219) and mandates repeated inspections of the three aluminium hopper-rinse-tank attach angles and replacement with steel brackets. \n\nIt’s required because failing aluminium brackets have allowed the shelf to detach in flight and shift engine controls, causing sudden power changes — replacing with steel eliminates the risk and stops the recurring inspections."}},"importantCases":[],"_links":{"self":"/api/acts/ad-at-800-8-hopper-rinse-tank-shelf-attachment","history":"/api/acts/ad-at-800-8-hopper-rinse-tank-shelf-attachment/history","analysis":"/api/acts/ad-at-800-8-hopper-rinse-tank-shelf-attachment/analysis","conflicts":"/api/acts/ad-at-800-8-hopper-rinse-tank-shelf-attachment/conflicts","importantCases":"/api/acts/ad-at-800-8-hopper-rinse-tank-shelf-attachment/important-cases","documents":"/api/acts/ad-at-800-8-hopper-rinse-tank-shelf-attachment/documents"}}