{"id":"F2006L00693","name":"AD/F406/6 Amdt 1 - Elevator Forward Spar","slug":"ad-f406-6-amdt-1-elevator-forward-spar","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":136709,"registerId":"commonwealth-F2006L00693-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Reims Aviation F406 Series Aeroplanes","sectionType":"division","heading":"Reims Aviation F406 Series Aeroplanes","content":"### Reims Aviation F406 Series Aeroplanes\n\n| AD/F406/6 Amdt 1 | Elevator Forward Spar | 4/2006 |\n| ---------------- | --------------------- | ------ |\n\n| Applicability: | Model F406, serial numbers F406-0001 through F406-0071.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |\n| -------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | 1. Inspect the elevator forward spar, near the outboard hinge bracket, in accordance with Reims/Cessna Service Bulletin CAB 93-7, Para. 1.2. Inspect the rivets which attach the outboard hinge bracket to the upper and lower elevator skin for evidence of shearing.3. Lubricate the elevator outboard hinge bearing in accordance with Cessna Service News Letter SNL86-28.Note: Rivets may be sheared even though the heads and tails of the rivets do not appear loose. Check by observing for rivet movement while gentle up and down loading is applied at tip of elevator. |\n| Compliance:    | 1. Inspect in accordance with Requirement 1 within 100 hours time in service after 1 November 2001. Thereafter, inspect at intervals not to exceed 110 hours time in service.2. Inspect in accordance with Requirement 2 within 100 hours time in service after 1 November 2001. Thereafter, inspect at intervals not to exceed 110 hours time in service.3. Lubricate the outboard elevator hinge in accordance with Requirement 3 at intervals not to exceed 610 hours time in service or 18 months, whichever occurs first.                                                     |\n|                | This Amendment becomes effective on 13 April 2006.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |\n| Background:    | Cracking has been found in the elevator forward spar in the area of the outboard hinge bracket. The condition may be aggravated by stiff elevator hinge bearings, however, cracks may still otherwise occur.                                                                                                                                                                                                                                                                                                                                                                       |\n\n|     | Amendment 1 is issued to facilitate scheduling of maintenance with manufacturer’s schedule of maintenance. |\n| --- | ---------------------------------------------------------------------------------------------------------- |\n\n![](image.001.png)  \nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n24 February 2006","sortOrder":0},{"sectionNumber":"AD/F406/6 Amdt 1","sectionType":"part","heading":"AD/F406/6 Amdt 1","content":"## AD/F406/6 Amdt 1","sortOrder":1},{"sectionNumber":"Elevator Forward Spar","sectionType":"part","heading":"Elevator Forward Spar","content":"## Elevator Forward Spar","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":"Amendment 1 does not expand applicability or add new types of obligations. The AD continues to require the same inspections and lubrication for the listed serial numbers; the amendment’s stated purpose is procedural: \"to facilitate scheduling of maintenance with manufacturer’s schedule of maintenance.\" This is an implementation/scheduling adjustment rather than a change to who or what is covered."},"complexity_factors":["Limited applicability to a defined serial-number range (F406-0001–F406-0071) reduces scope but requires precise fleet tracking.","Multiple distinct actions: structural inspection (rivet shearing) and hinge lubrication, each with separate intervals.","Different recurring intervals: initial inspections within 100 hours after 1 Nov 2001 then every 110 hours; lubrication every 610 hours or 18 months.","Mandates following external documents: Reims/Cessna Service Bulletin CAB 93-7 and Cessna Service News Letter SNL86-28 (operator must obtain and apply those procedures).","Detection nuance: rivets may appear intact; operators must perform a physical up-and-down loading check, increasing inspection skill/time.","Amendment notes scheduling alignment with manufacturer maintenance, affecting operators' planning rather than changing technical requirements."],"plain_english_summary":"This airworthiness directive requires operators of Reims Aviation/Cessna F406 aeroplanes (serials F406-0001 to F406-0071) to inspect the elevator forward spar near the outboard hinge bracket for rivet shearing per Reims/Cessna service instructions, and to lubricate the outboard hinge bearing on the stated intervals. It responds to discovered cracking and sheared rivets; aircraft owners/operators bear the inspection and maintenance costs and must fit these checks into their maintenance schedule."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a narrow, targeted safety directive addressing a specific structural defect in a limited fleet of aircraft. The amendment makes a minor administrative adjustment to scheduling without expanding the scope."},"complexity_factors":["Single, specific aircraft type and limited serial number range","Only three distinct requirements with clear, sequential numbering","Straightforward compliance timeline with simple intervals","Minimal cross-referencing (only to specific service bulletin and service news letter)","No nested exceptions or conditional logic","Short document with no interpretation section or defined terms"],"plain_english_summary":"This CASA Airworthiness Directive mandates owners/operators of Reims F406 aircraft (S/N 0001–0071) to inspect the elevator forward spar and rivet attachments, perform a functional check for rivet shearing, and regularly lubricate the hinge bearing. Cracks have been found in this structural area and stiff bearings can worsen risk; the actions prevent possible elevator failure and loss of control. Amendment 1 adjusts inspection/maintenance intervals to match the manufacturer’s schedule."}},"importantCases":[],"_links":{"self":"/api/acts/ad-f406-6-amdt-1-elevator-forward-spar","history":"/api/acts/ad-f406-6-amdt-1-elevator-forward-spar/history","analysis":"/api/acts/ad-f406-6-amdt-1-elevator-forward-spar/analysis","conflicts":"/api/acts/ad-f406-6-amdt-1-elevator-forward-spar/conflicts","importantCases":"/api/acts/ad-f406-6-amdt-1-elevator-forward-spar/important-cases","documents":"/api/acts/ad-f406-6-amdt-1-elevator-forward-spar/documents"}}