Winter OPS

October 1, 2024

Holdovertimes Updated Holdover Times for Winter Season 2024-2025 WinterOPS has been brought to the newest regulations FAA/EASA and TC. HOT and DSHOT Updates have been done. Fluid Changes Addition of fluid ALAB International PROFLIGHT PG4 Addition of fluid Chongqing Joba Chemical Co., Ltd FW-IV Addition of fluid MKS DevO Chemicals COREICEPHOB TYPE-IV PG Addition of fluid Shaanxi Cleanway Cleansurface IV Addition of fluid Chongqing Joba Chemical Co.,Ltd FW-I Addition of fluid Newave Aerochemical Co. Ltd. FCY-1Bio+ (R) Removal of fluid Clariant Safewing MP II FLIGHT PLUS Removal of fluid JSC RCP Nordix Defrost PG 2 Removal of fluid All Clear ClearWing ECO Removal of fluid Clariant Max Flight AVIA Removal of fluid Clariant Max Flight SNEG Removal of fluid Clariang Safewing EG IV NORTH Removal of fluid Beijing Wangye Aviation Chemical Product Co Ltd. KLA-1 Removal of fluid Clariant Produkte (Deutschland) GmbH Octaflo LYOD Removal of fluid Clariant Produkte (Deutschland) GmbH Safewing EG I 1996 (88) Removal of fluid Clariant Produkte (Deutschland) GmbH Safewing MP I 1938 ECO Removal of fluid Clariant Produkte (Deutschland) GmbH Safewing MP I 1938 ECO (80) Premix 55% i.g. ready-to-use Removal of fluid Cryotech Deicing Technology Polar Plus® Removal of fluid Gansu xiexin huineng Science and technology development Co., Ltd. XHN-1 Restructuring of Allowance Times (see details below) Snow mixed with Freezing Fog has received its dedicated column for each fluid. For detailed updates, please refer to the official regulatory documents. DSHOT DSHOT updates to the newest regulations FAA/EASA and TC DSHOT have been extended to Snow mixed with Freezing Fog Allowance Time The Allowance Times have been updated with new values The authorities introduced a list of applicable fluids for allowance times. Meaning, there will be no allowance times anymore for the generic fluids. New weather categories have been introduced (the MEATR Codes are included in the selection list) As the intensity is irrelevant for allowance times, the selection buttons are hidden, when an Allowance Time weather has been selected. Future Plans Restructuring of the Database for better performance Improvements in the weather conditions selection Thank you for using Winter OPS

September 29, 2023

- Updated Holdover Times for Winter Season 2023-2024 - WinterOPS has been brought to the newest regulations FAA and EASA. HOT and DSHOT Updates have been done. New Fluids - Addition of fluid Aero Mag 2000 SYR LLC DeiceX PG ADF Concentrate - Addition of fluid ALAB International PROFLIGHT EG1 - Addition of fluid Topan LLC TOPAN TYPE I - Addition of fluid Xinjiang Zhongtian Liyang Aviation Newmaterial Technology Co., Ltd Clearice-IB Removed fluids - Removal of fluid Kilfrost Limited Kilfrost DFSustain - Removal of fluid LNT Solutions LNT P188 - Removal of fluid Newave Aerochemical FCY-2 Bio+ - Removal of fluid Clariant Max Flight 04 - Removal of fluid JSC RCP Nordix Defrost EG 4 - Removal of fluid Shaanxi Cleanway Cleansurface IV - New weather category Snow mixed with Freezing Fog & ice pellets mixed with drizzle added - For detailed updates, please refer to the official regulatory documents. Decoders - New Global Reporting Format implemented into SNOWTAM Decoder - Small change to Snow Visibility notes

December 1, 2022

- Added Aircraft Performance Values in the Operations Settings. These are relevant to calculate the LOUT according to the Performance and Aerodynamic Acceptance Values in Tables 54 and following. New Middle Speed Values have been introduced for Fluid III (AeroClear MAX), all the other Fluids only have high and/or low speed Values. *If uncertain whether the aircraft to be treated conforms to the low speed, the middle speed, or the high speed aerodynamic test, consult the aircraft manufacturer. The aerodynamic test is defined in SAE AS5900 (latest version). - Default value is HighSpeed Aircraft Performance - The V Rotate Speeds are only used for allowance time calculations and are not used for the LOUT calculations anymore according to the new regulations. - Updated Snowfall Intensities Decoder to new regulations (now FAA, EASA and TC have been harmonized and all use the same values) - Bugfix in the Snowfall intensities Temperature Selection for Fahrenheit - Added Type I Fluids Sky-Go PG 80 & Safewing MP I LFD 80 Pre-Mix 55% - Added Type II Fluids Ice Clear II & COREICEPHOB Type II - Added Aeroclear Max values for Medium Speed Aircraft - Added new Weather Type of Ice Crystals mixed with Freezing Fog, Ice Crystals mixed with Freezing Mist and Snow mixed with Ice Crystals - 4.3.1 was not showing any Holdovertimes for SAE Types I, II, IV - this has been fixed now

November 29, 2022

- Added Aircraft Performance Values in the Operations Settings. These are relevant to calculate the LOUT according to the Performance and Aerodynamic Acceptance Values in Tables 54 and following. New Middle Speed Values have been introduced for Fluid III (AeroClear MAX), all the other Fluids only have high and/or low speed Values. *If uncertain whether the aircraft to be treated conforms to the low speed, the middle speed, or the high speed aerodynamic test, consult the aircraft manufacturer. The aerodynamic test is defined in SAE AS5900 (latest version). - Default value is HighSpeed Aircraft Performance - The V Rotate Speeds are only used for allowance time calculations and are not used for the LOUT calculations anymore according to the new regulations. - Updated Snowfall Intensities Decoder to new regulations (now FAA, EASA and TC have been harmonized and all use the same values) - Bugfix in the Snowfall intensities Temperature Selection for Fahrenheit - Added Type I Fluids Sky-Go PG 80 & Safewing MP I LFD 80 Pre-Mix 55% - Added Type II Fluids Ice Clear II & COREICEPHOB Type II - Added Aeroclear Max values for Medium Speed Aircraft - Added new Weather Type of Ice Crystals mixed with Freezing Fog, Ice Crystals mixed with Freezing Mist and Snow mixed with Ice Crystals

October 5, 2022

Initial Update for the 2022-23 Winter Season. Focus has been set on the update of Hold Over Times and DSHOTs. The new Fluids and Weather categories, as well as the SNOWTAM Converter will follow in the next few days.

October 29, 2021

Added degree-specific holdover times (DSHOT) The DSHOT database is an extension of the FAA and TC HOT Guidelines. The data it contains is derived from the same natural snow test data that is used to calculate the snow HOT values within the standard HOT tables. Within a typical HOT table, HOTs are provided for defined temperature ranges (e.g., -3°C to -8°C). The HOTs provided within a given temperature range are based on the coldest temperature of that range. Within the DSHOT database, specific HOT values are provided for each Type II, III, and IV fluid at all temperatures decrementing down to a given fluid's LOUT. A 1°C safeguard is incorporated in all DSHOT calculations The DSHOT take into place if the flaps were deployed at the time of deicing/anti-icing, provided the correct selection has been made in the HOT Screen. Any operator making use of the DSHOT data in a modified format shall employ a detailed verification process to ensure that the data presented is accurate and complete. This verification process shall consist of a series of manual checks of the DSHOT data within a DSHOT data presentation (e.g., a modified paper table or an eHOT app) against the corresponding values published in the most recent FAA DSHOT database publication. A record of the verification process shall be kept and maintained and this record shall clearly demonstrate that all DSHOT values within a data presentation have been verified. The verification process shall be updated and/or repeated on an annual basis (or whenever the DSHOT database or its data presentation is updated, whichever comes first). Due to this requirements, the DSHOTs must be actively enabled in the settings (Operations Page), where the user gets presented with the requirements and will be asked for an acknowledgement. If you need assistance in the verification process, please contact inquiries@mr-apps.ch and we'll gladly help.

October 1, 2021

• Updates for the 2021-2022 Guidelines for FAA/EASA and Transport Canada • 9 new fluids added according to the regulations • Major Changes in Allowance Times for Type IV fluids • New weather freezing mist added • The new degree-specific holdover times (DSHOT) will be added in the upcoming days • The new global reporting format for SNOWTAM will be introduced later this year • Minor Bugfix of unjustified warning message

September 30, 2021

• Updates for the 2021-2022 Guidelines for FAA/EASA and Transport Canada • 9 new fluids added according to the regulations • Major Changes in Allowance Times for Type IV fluids • New weather freezing mist added • Minor bug-fixes • The new degree-specific holdover times (DSHOT) will be added in the upcoming days • The new global reporting format for SNOWTAM will be introduced later this year

September 8, 2020

• Updates for the 2020-2021 Guidelines for FAA/EASA and Transport Canada • Major Changes in Transport Canada very light snow times and application guidelines • Introduced Snowfall intensities as a function of visibility converter • Minor bug-fixes

January 15, 2020

Added Application Guidelines for all Fluid Types and different scenarios (anti-icing or de-&anti-icing) and different temperature ranges.

Decoder Enabling

Enables the Decoder capability within the app