New EOBT. Apologies if this type of post is not allowed, I’m just struggling to find anything online on this topic, is there any way to view current SAM/SRM Messages from eurocontrol. The DCT map is produced from the RAD. 45 The Asia/Pacific Region ATFM terminology for use in ATFM communications is provided at Appendix X. Figure 1: Logical Architecture showing interface demarcation between the Local Slot time (CTOT): 1313Z. Based on this policy CFMU issues CTOT-delays to the flights, which have filed flight plans through the congested sector. The Specification of the Interactions Between the Roles. 1 Identification (1) This document forms part of the "ETFMS” documentation. B2B WRITE Service Documentation Set, dated 22/11/2017, available on the EUROCONTROL One-SKY teams B2B library. Relations between roles are represented by interaction and interlevel links. With the growing number of airport operators using A-CDM, this in turn has seen an increase in the use of various online interfaces and smartphone apps created by these airports, where data such as TSAT and CTOT can be quickly checked. Note: ATFCM stands for "Air Traffic Flow and Capacity Management" Description. 119- 126. User interactions• CTOT frozen on acceptance of A-DPI, even when TTOT outside STW • Reduced need for TWR to contact NMOC for CTOT extension • ATC remains responsible for CTOT adherence • Adherence to ATFM Slots remains based upon ATOT of the FSA • An A-DPI with TTOT outside STW is still considered a “slot buster” accordingDarley Moor, Gamston (UK) Peter. 12-Apr-23. One is for radio use, the other for all other communications and procedures. Even though the format used by the German airports is standard in theory. Phythian;david. EUROCONTROL has launched a campaign to raise awareness amongst controllers, pilots and flight dispatchers about Flight Plan and ATFCM adherence. From here. 03-Jan-19 21:46 03. Jacko. Airport and airspace congestion is an inherent problem in Europe, often resulting in substantial flight delays, re-routings and even cancelations (EUROCONTROL PRC, 2015). Eurocontrol estimates that the delays and cancellations caused by air-traffic-flow problems cost the European economy €17. 09:30 - 17:00. • EUROCONTROL A-CDM Implementation Manual, Version 5 March 2017. 0, available on the EUROCONTROL One-SKY teams B2B library Welcome to EUROCONTROL’s TV channel! On this channel, you’ll find various insights into our work to keep the aviation system safe, more efficient, more cost-effective and with a minimal. Eurocontrol CTOT / airport slot assignments for light GA and how to get around them. 0 ReleaseEUROCONTROL | Supporting European Aviation | EUROCONTROLThis document provides an overview and description of the available API services. The second reference period (RP2) covers the calendar years 2015 to 2019 inclusive. Our performance objectives are aligned with the European ATM Master Plan and aim at increasing capacity and providing. Along with the renovation of transportation technologies, and as a result of the increasing demand for. or reset password. P. 33 requirements (merged) Active Threads; Latest Posts; Back to Top. A-ENPRM Advanced EUROCONTROL Notice of Proposed Rule-making A-G Air to Ground A-iCWP Advanced Integrated Tower Controller Working Position A-ITSM Agency IT Service Management System A-law PCM Companding Algorithm Used in Europe A-NPA Advance Notice of Proposed Amendments A-PNT Alternative Positioning Navigation and Timing. CTOT extension procedure; 5. Sent by EUROCONTROL if the flight plan is issued a ground delay (slot time / CTOT) EUROCONTROL is mentioned as the source and the extent justified by the non-commercial use (not for sale). delays in the 90’s, and operated by EUROCONTROL. Take Off from Outstation (ATOT – Munich. 8. The purpose of this document is to provide users outside the NM with a detailed description of the NM Flight Progress Messages. The REA message can only be sent for flights with a published slot and which are not yet active. OneSky Online is EUROCONTROL's Extranet, that part of our website where content can be accessed by authorised users only. Aircraft Landing Planning is challenging because the inherently limited capacity of airport runways causes bottlenecks. OneSky Online. CTOT) are computed. Solution #21 is strongly linked with SESAR Solution #18 ‘CTOT to TTA for ATFCM’ and with Solution #20 ‘Collaborative NOP’ due to the concept integration needed with the Airport Operations Plan (AOP). This will issue exactly the same query to obtain an up to date list. We have had many discussions on this – example example – but I am wondering what exactly arranges for Eurocontrol to stop tracking the flight. Estimated take off time . int Rerouting Status: presents a summary of the (IFPS/Overload/MAX Shift Delay/etc. Moderate turbulence is similar to light turbulence, but of greater intensity – variations in speed as well as altitude and attitude may occur but the aircraft remains in control all the time. int 3 PTOT becomes CTOT . About. You can consult the MoD’s Operational Low Flying timetable for LFA 7 (T) and/or contact the MOD Low Level Advisory Service. updated link to EUROCONTROL library; 10. When the REA is filed before the EOBT, the flight is considered as having a new. : Calculated Time of Arrival. 5. Unless decided otherwise, the following reference. eurocontrol slot allocation methodology and new approach for calculated take off times (ctot): alternative ctot versus ctot March 2017 Anadolu University Journal of Science and Technology-A. (3) This document has a Title of "API Implementation. Demand is managed by giving the aircraft a slot stating when it can take-off – the ‘Calculated Time of Take Off’ or CTOT. The views and opinions of originators and contributors. 09:00 - 17:30. Primarily because every airport almost has different procedures. Aggregated data and printed reports limited speed of production. Sent to AOs / ATS 2 hours before the last received EOBT. The accident happened in Backnang-Heiningen EDSH where a Robin DR400 departed 39 seconds after an Antonov An-2. Eurocontrol Slot Allocation Methodology and New Approach for Calculated Take Off Times (Ctot): Alternative Ctot Versus Ctot . The complete Linearity Verification Material (LVM) for the. com etc for booking hotels, there is not much meat left. eurocontrol slot allocation methodology and new approach for calculated take off times (ctot): alternative ctot versus ctot ertan Çinar 1, *, soner demİrel1 DES - Flight plan de-suspension message sent by EUROCONTROL if a previously suspended flight plan becomes de-suspended SAM, SRM, and SLC - Slot allocation, revision, and cancellation messages. departmentEurocontrol CTOT / airport slot assignments for light GA and how to get around them. : Actual Time of Arrival. EUROCONTROL's European Aviation Overview provides a detailed snapshot of the latest Network trends. From 05 April 2016, Network Manager (NM) will begin publishing target time information together with Calculated take Off Times (CTOT) in the Slot Allocation and Revision Messages (SAM and SRM). 7. 0 COBT Calculated Off-Block Time Based on CTOT Phraseology & Terminology in Harmonized ATFM World 13 Source: EUROCONTROL ATM Lexicon. Active Threads; Latest. CTOT) are computed. POST OPERATIONS PHASE 8. In Europe, the departure slot is defined by Eurocontrol with a time tolerance of -5 minutes and +10 minutes around the CTOT. 3 The Eurocontrol requirement is that all controlled flights departing,. Enter the email address you signed up with and we'll email you a reset link. or. The 2 terms are interchangeable but mean the same thing. Datalink is a key enabler to increase aviation safety and capacity as well as support automation, efficiency. [ATM2000+] ATM Strategy for 2000+, EATCHIP Doc: FCO. CONTACTS 13. 18038/aubtda. News March 18th, 2016. 1100 minus 15, minus 10 = 1035. DICTIONARY OF ABBREVIATIONS 12. 5. List of filed flight plans with status indication. CTOT improvement management CTOT improvement is an action to improve a slot-issued flight in the ETFMS by proposing aThis OI amends the section 5. The actual. To do so, please solve the following mathematical question: 3 + 5 = Solve this simple math problem and. EUROCONTROL | Supporting European Aviation | EUROCONTROLEurocontrol was nominated as the Network Manager for the Single European Sky via a Commission Decision on 7 July 2011 (C(2011)) 4130 final). In [ 15 ] fuel consumption is evaluated for terminal areas with a Terminal Inefficiency metric based on the variation in terminal area fuel consumed across. Eurocontrol CTOT / airport slot assignments for light GA and how to get around them Any way to do RS232 dial up networking on Android (Samsung tablet)? Active ThreadsEUROCONTROL Airport Operations Unit (APR) and London Heathrow Airport represented by the BAA, UK National Air Traffic Services (NATS), British Airways (BA), bmi and other partners. This is an AFTN interface, available to pilots who can supply a UK address. Active Threads; Latest Posts; Back to Top. In case the dispatcher of an airline determines that the CTOT-delay is too large, he may choose to cancel the flight plan and file another flight plan, which takes the flight around the congested airspace. Enter the email address you signed up with and we'll email you a reset link. Portlets from A to Z A (R)O Specific Features. * A/CDM departure constraints - TOBT, TSAT. contributor. Phythian;david. To monitor these statements of account, EUROCONTROL requires a letter, in a very specific format, from the operator, granting the operator's designee access to this information. Forums: Trips & Airports - Guernsey EGJB summer 2016. eurocontrol slot allocation methodology and new approach for calculated take off times (ctot): alternative ctot versus ctot ertan Çinar 1, *, soner demİrel1Published. A time calculated and issued by ATFM Unit, as a result of tactical slot allocation, at which a flight is expected to pushes back / vacates parking position so as to meet a CTOT taking into account start and taxi time. The new EOBT must not be after this time. Taxi to the hold and told to report 3 minutes before ready for departure. This requirement is mandated by Eurocontrol, and we are obligated to adhere to this rule. 6. From todays tactical update 0910 UTC: LECM (Madrid) airspace T9 Southbound/Northbound regulated due to additional traffic due to industrial action in France. Also, planning for and navigating through the complex airspace in Europe is. Your flight plan is subject to flow management and a departure slot was assigned. This reduces the dependency on getting such information from elsewhere and especially. General. I ended up cancelling that plan and filed a new routing avoiding Austria ATC alltogether with allowed us to take off immediately. 0 Edition Validity Date: 31-10-2021 Classification: Green Page: i DOCUMENT CONTROL Document Title ATFCM Procedural Contingency Plan Document Subtitle Winter 2021-22 Document Reference Edition Number 1. EUROCONTROL Forecast 2023-2029. Isn’t the logic of an I-FP is something “unique to fly” when coms fails while IFR, then it. - LOW1222. 4 Update of ATC Activated description. The CPDLC application provides air-ground data. 18038/aubtda. Our performance objectives are aligned with the European ATM Master Plan and aim at increasing capacity and providing. 6bn ($20. Brétigny-sur-Orge, France: SESAR WPE. Remember me on this computer. It starts with an introduction to the NM B2B web services and a description of the attributes pertaining to each API service. OBT_Validity reached if the alternative route gets a new CTOT such that the flight becomes IFPS invalid . Example: Original EOBT 1000, CTOT 1100, but the flight cannot go off blocks until 1025. 0. Note this was always for flights below FL150, but it mostly happened when flying in Eastern Europe, which I did a lot during that time. Congested airports aim to strategically (six months in advance) establish demand-capacity balance through airport slots, i. NOP Network Operations Portal - EUROCONTROLAbbreviated most commonly as CTOT, the Calculated Take-off Time is a time given to commercial aircraft prior to departure in Europe. Variant 1: the period between 5 minutes before and 10 minutes after the CTOT. 0 Edition Validity Date 31-10-2021 Classification Green. 09:00 - 17:30. . Sequence - Flight Plan data [FPL] Fixed taxi time . While the FIXM Work Area is hosted by EUROCONTROL 3, participation is open to the public. Eurocontrol CTOT / airport slot assignments for light GA and how to get around them. fullstop. 2. IFR slots (CTOT) in Germany - not notified by Foreflight. , take-off time variability, or wind speeds). Project PJ24 - NCM is a joint venture between the operational and research activities of EUROCONTROL, combining their knowledge and expertise in this new SESAR challenge. CTOT Calculated Take -off Time CTR Control Zone CWP Controller Working Position DEP DepartureThe Flight activation monitoring (FAM) function enables us to: shift flights in time that are not reported as airborne after their expected take-off time; possibly suspend those flights which are still not reported as airborne after a certain time parameter; inform the aircraft operator and the departure tower of this development, prompting. To the ATFCM Users Manual. 4 change of wording. User-friendly flight plan app with CTOT and TOBT! Live flight plan information app for flight crew, ATC, ground crew. Active Threads; Latest Posts; Back to Top. 0 FB1170: FF-ICE/R1 services Correction & Tuning 11. The first reference period (RP1) covers the calendar years 2012 to 2014 inclusive. ATFM Slot Adherence. Specific Commands. 45 The Asia/Pacific Region ATFM terminology for use in ATFM communications is provided at Appendix X. Eurocontrol CTOT / airport slot assignments for light GA and how to get around them. POST. The Network Operations Portal (NOP) is a collaboration application that enables the EUROCONTROL Network Manager’s (NM) operational stakeholders to interact and collaborate with our Network Manager Operations Centre (NMOC). Log in with Facebook Log in with Google. The matching Flights are listed in a table, and the data displayed across an varying array of columns, depending on the selected Tab, and on your user. 0:ContextualModel:Abbreviations:CTOT Calculated take-off time source: EUROCONTROL A-CDM Implementation manual Get Started Home Start using the AIRM Downloads About Us AIRM Community. Light turbulence is the least severe, with slight, erratic changes in attitude and/or altitude. 4 ATFM Principles As described in ICAO Doc 9971 (3 rd Ed. From 2008 I used Autoplan. ), the core objective of ATFM is to facilitate safe, orderly and This document provides an overview and description of the available API services. 5. ATS Data Exchange Presentation (ADEXP). (CTOT) and in effect provide a guaranteed. PTOT becomes CTOT . This window is used to send a READY to Depart message () for a selected flight. I studied in the Aeronautical Institut Francesco De Pinedo in Rome in which I acquired knowladge in the Civil Aviation World. EUROCONTROL Network Management Directorate Edition Number: 1. Page 1 of 2FIXM Work Area. Note this was always for flights below FL150, but it mostly happened when flying in Eastern Europe, which I did a lot during that time. EUROCONTROL, the European Organisation for the Safety of Air Navigation. CTOT and its Slot Tolerance Window [4] (STW) sets the boundaries for the TTOT and TSAT Calculations. E/CTOT: Either the Calculated Take Off Time or, if not available, the Estimated Take Off Time. 0 TOBT Target Off-Block Time EUROCONTROL A-CDM, FIXM 2. CHMI / ATFCM application / Flights / Tower departure list /. Impact on AO. Each airport collaborates with terminal area control to develop its own strategy to allocate the available landing capacity. There isn’t a Eurocontrol jail in the sky where they send pilots, with 2 choices: (a) to fly holds for one hour or (b) to cancel IFR and have to dig out VFR charts and hack along at 999ft across Belgium or whatever. ETOT . Estimated off block time . The slot is due to the following regulations: - LONE1222. Satellite IR. (4) Flights may suffer from CTOT updates after they started pushback or even taxiing and operations may be disturbed by flight plan updates after the flight has received its clearance. Eurocontrol CTOT / airport slot assignments for light GA and how to get around them. CTOT("20141231 235959") Numeric literal input. Therefore, the TOBT shall be adjusted as early as possible. OneSky Online is EUROCONTROL's Extranet, that part of our website where content can be accessed by authorised users only. It is used on the ramp and in the cockpit by crews to deal with flight plan issues. EUROCONTROL SLOT ALLOCATION METHODOLOGY AND NEW APPROACH FOR CALCULATED TAKE OFF TIMES (CTOT): ALTERNATIVE CTOT VERSUS CTOT Ertan ÇINAR 1, *, Soner DEMİREL1 1 Department of Air Traffic Control, Faculty of Aeronautics and Astronautics, Anadolu University, Eskişehir, TurkeyEUROCONTROL Experimental Centre B. Departed from a VFR only airfield but wanted to fly IFR en-route. 18038/aubtda. Computed take NOP Network Operations Portal - EUROCONTROL The CTOT app. 300428 DO - 10. Taylor (Lincoln Lab) Release Candidate 1. CTOT extension management CTOT extension requests are managed differently depending on whether. Explore our docs. Yesterday I got a 1h CTOT delay on my way to France, I called Eurocontrol as a friend told me sometimes when you call they will improve it. 000 7 1 Introduction 1. Head of Performance, Forecast, Relations - Network Manager - EUROCONTROL Cross border ATFM Conference November 2015. 15 F - 91222 Brétigny-sur-Orge CEDEX FRANCE Telephone : +33 (0)1 69 88 75 00 Sponsor: CFMU (Central Flow Management Unit) Sponsor (Contract Authority) Name/Location: EUROCONTROL Agency Rue de la Fusée, 96 B -1130 BRUXELLES Telephone : +32 2. In this example, the flight was handed over (by Lille) to London Info (area FIS) instead of London Control. 8. Taylor (Lincoln Lab) Updated with review comments 0. When such a window is opened, no other function may be invoked. 1 Edition date : 30 Sep 2014 Reference : NETWORK OPERATIONS HANDBOOKSlot Swapping. 0 • The FF-ICE will eventually replace the current ICAO procedures and. boscomantico. MANAGEMENT OF THE READINESS STATUS OF THE FLIGHT 7. EUROCONTROL EXPERIMENTAL CENTRE SOFT Study of Operational Flight Plans and Trajectories Requirements for Advanced Flight Plan Information EEC Note No. Details: displays the detailed summary information for the selected flight. Business aviation flights are by nature on demand and flexibility is a key component of the service it delivers to customers. The European Organisation for the Safety of Air Navigation, commonly known as Eurocontrol (stylised EUROCONTROL ), is an international organisation working to achieve safe and seamless air traffic management across Europe. ATFM System Communications 5. Yesterday I got a 1h CTOT delay on my way to France, I called Eurocontrol as a friend told me sometimes when you call they will improve it. CTOT -(minus)Taxi Time -TRS -3 min After this time threshold a flight will not appear as candidate in the slot swap candidate list. operation and consists of planning and coordination activities. API and Webhook notifications. ACC Area Control Centre AIBT Actual In Block Time ALDT Actual Landing Time. 2. Airport integration. [email protected] is a permission given by the coordinator for a planned operation to use the full range of airport infrastructure necessary to arrive or depart at a coordinated airport on a specific date and time. In all cases, it is in the best interest of AOs to initiate prompt revisions/cancellations thus permitting the system to maximise use of available capacity and minimise delay. 4 min en-route ATFM delay per flight in 2014 (EUROCONTROL CODA, 2015). EUROCONTROL would like to raise awareness among pilots to keep VHF channels (136. COMMUNICATION / CDM PROCESSES 9. They are very friendly and helpful and unlike some local “towers” really know their stuff on flight planning. releases@eurocontrol. TY - JOUR T1 - EUROCONTROL SLOT ALLOCATION METHODOLOGY AND NEW APPROACH FOR CALCULATED TAKE OFF TIMES (CTOT): ALTERNATIVE CTOT VERSUS CTOT AU - ErtanÇınar, SonerDemirel Y1 - 2017 PY - 2017 N1 - doi: 10. There are other tools, non-free. They told me to takeoff according to flight plan and simply ignore it. But it isn't yet possible for the ACARS system to directly send Ready messages to us. Overloading of ATC sectors is typically resolved by delaying the departure of flights that may contribute to the burden, which is done through the Network Manager (NM) by issuing a Calculated Take Off Time (CTOT). Flights are regulated by issuing a calculated take-off time (CTOT) that creates an ATFM 'slot'. The resulting material decomposition reduces tread thickness and significantly impacts flight safety and the environment. OneSky Online is EUROCONTROL's Extranet, that part of our website where content can be accessed by authorised users only. OneSky Online. GSM encryption to start with is very weak, and you don’t need to be a government player to exploit it. 18038/aubtda. relation. The intended. They are in fact referring to the CTOT. Fondată în 1960, Eurocontrol are în prezent 41 de state membre și are sediul. Data Requirement For each departing IFR flight subject to an ATFM regulation: Calculated. The Network Manager can use this information to improve en route and sector planning of the European ATM Network. The weather was about as good as one could hope for, with a huge pressure area covering most of N Europe. Eurocontrol software done by unix and java hackers, paid x€ per line of code, whether working code or not. or. Taylor (Lincoln Lab) Updated with review comments 0. Note: ATFCM stands for "Air Traffic Flow and Capacity Management" Description. 15 min of calculated take off time (CTOT). Computed takeNOP Network Operations Portal - EUROCONTROLThe CTOT app. Cellular networks are just not secure. The reason for the regulation is indicated by the responsible Flow Management Position FMP. t. European flights during the summer holiday period could be affected by strike action by air traffic managers. These New CTOT and New CTO fields are protected in case of 2 slots swapping. 1 Edition date : 30 Sep 2014 Reference : NETWORK OPERATIONS HANDBOOK Slot Swapping. The new EOBT must be earlier than 1035. New EOBT must not be later than CTOT minus taxitime minus 10 minutes. Possible values are: : The time by which the Prop CTOT has to be accepted or rejected. 0 16 Aug 2012 B. Edition No. These are used for the submission of target times (and other arrival information) in support of the arrival management processes. International Civil Aviation Organization (ICAO)International Civil Aviation Organization (ICAO)OneSky Online. 7. : Calculated Time of. Created Date: Eurocontrol CTOT / airport slot assignments for light GA and how to get around them. If it is, then this action will not trigger a. As it is a semi-automated process (with minimal keyboard input), the risk of errors and typos - and as consequence, of rejection by NMOC- is minimized. The. Yes, the CTOT is for you eg CTOT 10:00 is when you should plan to be airborne. The third reference period (RP3) covers the calendar years 2020 to 2024 inclusive. Doc Ref 9. The TFV used for the EM flow WX ARR procedure should geographically encompass the arrival routes and STARs, used by the exempted arrival flights. Eurocontrol CTOT / airport slot assignments for light GA and how to get around them. This discrepancy may arise from both different perspective of delay and different methodology used to measure it: the NM calculates planned departure delay, while AOs account for ATFM. That is currently the only free tool for this job. ETOT/TTOT/CTOT. 300428 DO - 10. This message is sent to AOs/ATS 2 hours before the last received EOBT. The measures pertain to the Air Transport and Air Traffic Management Sector. Delay and cancellation messages are easily sent from the AMEXSY module in the PPS Control Panel. 1. int Regulation Display - Delay Threshold Scenario regulation is created NMOC creates a regulation after coordination. 0. Work Zone Traffic Control stock photos are available in a variety of sizes and. 1. phythian@eurocontrol. Possible values are as described in the tooltip below. 99 MB. In addition to the above commonly shared buttons, the Button Bar may sometimes present commands linked to specific functions: FMP, AO and Tower are among those. A VFR flight tends to avoid the strikes, because your flight plan does not need to be validated by Eurocontrol. Manage your users access to the CTOT apps. 05-Jul-15 20:15. Add to calendar Learn more here. Despite the specificity, there are several common leasing and financing scenarios that this letter format does not address, such. FAQ. ATFM Delay Codes. 2 17th April 2012 B. This value is used by the CFMU system to calculate the possible slot timing. 5. SID: The Fixed connecting. At EUROCONTROL we conduct R&D activities for the evolution of the network management function at regional, sub-regional and local levels. Accessing CTOT data. type: article: en_US: dc. Historically, the practice in the UK as I understand it was to teach that if a student goes into cloud inadvertently, they should do a 180 degree turn carefully and fly out on the reciprocal. A time calculated and issued by ATFM Unit, as a result of tactical slot allocation, at which a flight is expected become airborne . Sebastian_G. The Invalidate function works for this window, if the user preference CHMI / ATFCM application / General / Dates and times / Activate invalidate functionality is checked. 2. Updated by AO . As automated response might however. At EUROCONTROL, we actively facilitate a pan-European stakeholder collaborative approach to respond effectively to aviation’s sustainability challenges, such. A CTOT is an important time constraint as the effective take-off has to occur between [CTOT – 5 min] and [CTOT + 10 min]. - CTOT - Expected Standard Initial Departure (SID) - CDM information - Flightplan route - TOBT - TSAT - CTOT - Regulation cause: view the location on a map and decode it - Delay code - Taxi time - Add a flight to your watchlist - Airport METAR and TAF CTOT app works for all flights flying within the Eurocontrol region. ForeFlight (merged thread) Active Threads; Latest Posts; Back to Top. Slot time (CTOT): 1313Z. Using data received directly from airlines, EUROCONTROL CODA (Central office for Delay Analysis) provides seasonal taxi time statistics for both the IATA Winter Season and the IATA summer seasons. Access your flight data and receive webhook notification directly with the API, without the need for an app. All other flights in the Departure list will use the normal Tower Departure List foreground and background colours : button on the button. Suspended Flight List for the same query criteria as the current flight list, click on the button at the top of the list. Sent to AOs / ATS 2 hours before the last received EOBT. Much more than an ATFM system. Nobody asked me about it once I was in the air. ATFM slot adherence monitoring is required by SES legislation. It is operated by NATS – here. eurocontrol. ATFM delay is measured in minutes per. Instantly access real-time data, make lightning-fast decisions and improve efficiency. 23 - 24 November 2023. Non-adherence to CTOT has negative impact on operations, as it is always a delay. . This terminates the IFR clearance (as far as the UK is concerned). Taylor (Lincoln Lab) Release Candidate 1. Slot Swapping. EUROCONTROL SLOT ALLOCATION METHODOLOGY AND NEW APPROACH FOR CALCULATED TAKE OFF TIMES (CTOT): ALTERNATIVE CTOT. Note that Eurocontrol does not enforce slots with ASL, they accept every flight plan that passes IFPS.