{"id":"F2007L01594","name":"AD/F2000/27 - Wing Anti-Ice Monitoring System","slug":"ad-f2000-27-wing-anti-ice-monitoring-system","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":66157,"registerId":"commonwealth-F2007L01594-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Dassault Aviation Falcon 2000 Series Aer","sectionType":"division","heading":"Dassault Aviation Falcon 2000 Series Aeroplanes","content":"### Dassault Aviation Falcon 2000 Series Aeroplanes\n\n| AD/F2000/27 | Wing Anti-Ice Monitoring System | 7/2007 |\n| ----------- | ------------------------------- | ------ |\n\n| Applicability: | Falcon 2000EX aeroplanes, serial numbers 1 to 5 and 7 to 27 inclusive, without Dassault Aviation Modifications M2814 and M2949 incorporated.                                                                                                                                                                                                                                                                                                                                 |\n| -------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Unless previously accomplished, modify the electrical wiring of the wings anti-ice system in accordance with the accomplishment instructions of Dassault Aviation Service Bulletin (SB) F2000EX-116 dated 31 May 2006 and F2000EX-140 dated 28 February 2007, or later revisions approved by the European Aviation Safety Agency (EASA).                                                                                                                                     |\n|                | Note: EASA AD 2007-0137 refers.                                                                                                                                                                                                                                                                                                                                                                                                                                              |\n| Compliance:    | Within the next six months after the effective date of this Directive.                                                                                                                                                                                                                                                                                                                                                                                                       |\n|                | This Airworthiness Directive becomes effective on 5 July 2007.                                                                                                                                                                                                                                                                                                                                                                                                               |\n| Background:    | EASA has advised that analyses of in-service reports revealed that in instances of failure of the wings anti-ice valve, indications of untimely anti-icing with the wings anti-ice selector on “OFF\" or of insufficient anti-icing with the wings anti-ice selector on “AUTO\" might not be properly displayed to the flight crew. It may result, on ground, in potential structural damages due to a leading edge overheat, or in-flight, in an insufficient anti-ice power. |\n|                | This Directive mandates an upgrade of the wing anti-ice monitoring circuitry per implementation of modifications M2814 (SB F2000EX-116) and M2949 (SB F2000EX-140) to cover the whole monitoring logic of the wings anti-ice system.                                                                                                                                                                                                                                         |\n\n![](image.001.png)  \nCharles Lenarcic  \nDelegate of the Civil Aviation Safety Authority\n\n18 May 2007","sortOrder":0},{"sectionNumber":"AD/F2000/27","sectionType":"part","heading":"AD/F2000/27","content":"## AD/F2000/27","sortOrder":1},{"sectionNumber":"Wing Anti-Ice Monitoring System","sectionType":"part","heading":"Wing Anti-Ice Monitoring System","content":"## Wing Anti-Ice Monitoring System","sortOrder":2},{"sectionNumber":"7/2007","sectionType":"part","heading":"7/2007","content":"## 7/2007","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 safety defect in a specific aircraft type. The scope remains tightly focused on the original safety issue identified — faulty wing anti-ice monitoring circuitry. No scope creep is evident."},"complexity_factors":["Single, specific applicability (26 aircraft by serial number)","One clear requirement with two alternative compliance documents (service bulletins)","Simple deadline structure (6 months from effective date)","No nested exceptions or conditional logic","Minimal defined terms (only standard aviation references like EASA, SB)","Short document (approximately 200 words of substantive content)","No cross-references to other legislation beyond noting related EASA AD"],"plain_english_summary":"This CASA Airworthiness Directive requires owners/operators of about 26 Dassault Falcon 2000EX jets (specific serials) to upgrade the wing anti-ice electrical wiring per Dassault service bulletins within six months of 5 July 2007.  \n\nThe upgrade fixes wiring that can mask wing-anti-ice valve failures that might cause untimely heating on the ground or insufficient heating in flight, preventing structural damage and dangerous ice buildup."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The directive stays within the original corrective purpose: to upgrade the wing anti-ice monitoring circuitry by implementing modifications M2814 and M2949. It does not broaden the subject matter beyond that safety fix; it simply mandates the SB-specified wiring changes for a defined subset of Falcon 2000EX aeroplanes and relies on EASA approval for any later SB revisions."},"complexity_factors":["Short, single-subject instrument focused on one corrective action","Narrow applicability: specific serial-number range (1–5, 7–27) with explicit carve-out for aircraft already modified (M2814, M2949)","References two specific Dassault Service Bulletins (F2000EX-116 and F2000EX-140) with dates","Conditional acceptance of later revisions only if approved by EASA (external dependency)","A single firm compliance deadline (six months) and effective date provided","Technical implementation detail delegated to manufacturer SBs rather than spelled out in the directive (adds operational complexity for maintenance shops)"],"plain_english_summary":"**What this directive does**\n\n- **Requires a wiring modification** to the wing anti-ice monitoring circuitry on certain Dassault Falcon 2000EX aeroplanes. The work must follow Dassault Service Bulletin (SB) F2000EX-116 (31 May 2006) and SB F2000EX-140 (28 Feb 2007), or later revisions approved by the European Aviation Safety Agency (EASA). (Requirement)\n\n**Which aeroplanes are affected**\n\n- Falcon 2000EX aeroplanes with serial numbers 1–5 and 7–27 inclusive, **only if** Dassault modifications M2814 and M2949 have not already been installed. (Applicability)\n\n**When it must be done**\n\n- The modification must be completed within six months of the directive taking effect. The directive became effective on 5 July 2007. (Compliance)\n\n**Why the change is required**\n\n- According to the regulator summary, in-service reports and analyses by EASA showed that failures of the wing anti-ice valve could produce incorrect or missing indications to the flight crew. That fault can lead to two concrete risks: overheating of the wing leading edge while on the ground, or insufficient anti-ice power in flight. The modification implements the monitoring logic changes intended to detect and display those failures correctly. (Background)\n\n**Who pays and who decides**\n\n- Aircraft owners/operators pay for parts, labour and downtime required to carry out the modification. The Civil Aviation Safety Authority (CASA) enforces the directive; Dassault provides the service bulletins that describe the work; EASA must approve any later revisions of those SBs that are followed. (Requirement, Compliance)\n\n**How it changes operator behaviour**\n\n- Operators of affected aeroplanes must schedule and complete the wiring change within the six-month window, using the specified SB instructions or EASA-approved later revisions. Until the modification is embodied, the aircraft remains subject to the directive and may be regarded as non-compliant with the applicable airworthiness requirement.\n\n**Practical costs, risks and trade-offs**\n\n- Direct costs: purchase of parts and payment for certified maintenance labour, and lost revenue while the aeroplane is out of service for the work. (Requirement)\n- Choice restriction: the directive requires the specific SBs or EASA-approved later revisions; operators cannot substitute an unapproved design solution. (Requirement)\n- Implementation risk: incorrect or incomplete embodiment of the SBs would leave the underlying monitoring deficiency uncorrected, so quality of maintenance and certificated accomplishment is consequential. (Background)\n- Market effects: the work creates demand for Dassault-authorised parts and maintenance; this concentrates spending on providers who can lawfully and practically perform the SB. That is a mechanical consequence of mandatory, model-specific service instructions. (Requirement)\n\n**Mechanics, not motive**\n\n- Mechanically, the directive mandates the installation of modifications identified as M2814 and M2949 by following the two SBs. It cross-refers to an EASA AD (2007-0137) and makes EASA approval of later SB revisions a precondition for compliance with an alternative revision. The directive does not alter flight operations rules directly; it imposes a maintenance obligation to correct a specific monitoring failure mode. (Requirement, Background)\n\n**Takeaway**\n\n- If you operate one of the listed Falcon 2000EX serials and do not already have mods M2814 and M2949, you must get the wiring modification done per the specified Dassault SBs (or their EASA‑approved replacements) within six months. Owners bear the cost and must use approved procedures; the technical change is intended to ensure accurate cockpit indication of wing anti-ice valve failures. (Applicability, Requirement, Compliance, Background)"},"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-f2000-27-wing-anti-ice-monitoring-system","history":"/api/acts/ad-f2000-27-wing-anti-ice-monitoring-system/history","analysis":"/api/acts/ad-f2000-27-wing-anti-ice-monitoring-system/analysis","conflicts":"/api/acts/ad-f2000-27-wing-anti-ice-monitoring-system/conflicts","importantCases":"/api/acts/ad-f2000-27-wing-anti-ice-monitoring-system/important-cases","documents":"/api/acts/ad-f2000-27-wing-anti-ice-monitoring-system/documents"}}