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WEATHER SOLUTIONS AND OPERATIONAL SUPPORT SYSTEMS
sureHOT electronic holdover time
service
WEATHER SOLUTIONS AND OPERATIONAL SUPPORT SYSTEMS
Michael ChaputChief Executive Officer
SureWx Inc.Montreal, Quebec
mchaput@surewx.com
www.surewx.com
Weather and operational
support solutions for airport and
air carrier applications
What we do
WEATHER SOLUTIONS AND OPERATIONAL SUPPORT SYSTEMS
Holdover Time Science 101
WEATHER SOLUTIONS AND OPERATIONAL SUPPORT SYSTEMS
Holdover Time Tables
WEATHER SOLUTIONS AND OPERATIONAL SUPPORT SYSTEMS
✈ De/anti-icing fluid holdover times are an important tool in the safety of winter flight operations
✈ Significant amount of research and development was performed and the quality of the data employed in the current holdover time tables is excellent
Holdover Time Science 101
Wx SOLUTIONS AND OPERATIONAL SUPPORT SYSTEMSWEATHER SOLUTIONS AND OPERATIONAL SUPPORT SYSTEMS
Fluid Testing
WEATHER SOLUTIONS AND OPERATIONAL SUPPORT SYSTEMS
✈ The holdover time for any aircraft de/anti-icing fluid is a function of three variables:
✈ Rate of precipitation (LWE)✈ Type of precipitation✈ Ambient temperature
Holdover Time Tables
WEATHER SOLUTIONS AND OPERATIONAL SUPPORT SYSTEMS
✈ The holdover time for any aircraft de/anti-icing fluid is a function of three variables:
✈ Rate of precipitation (LWE) = ?✈ Type of precipitation = Snow✈ Ambient temperature = -4 Celsius
0:40 – 1:05
Holdover Time Tables
WEATHER SOLUTIONS AND OPERATIONAL SUPPORT SYSTEMS
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0 5 10 15 20 25 30 35 40 45Plate Pan
Rate of Precipitation (g/dm²/h)
Failu
re T
ime
(min
)
Below -3 to -14ºC -14
-14ºC
Rate of 7 g/dm2/h = 1:20 HOT
Rate of 17 g/dm2/h = 0:50 HOT
Rate of 40 g/dm2/h = 0:31 HOT
HOT RANGE 0:40 to 1:05
LIGHT SNOW MODERATE SNOW HEAVY SNOW
-4.3C
-14C
Holdover Time Science 101
NO HOTs EXIST
✈ Flight crew’s ability to extract the proper information from the tables has not advanced with the science employed to build the tables
✈ Refinement of the “format” would allow for expansion of operational use of fluid holder times
Holdover Times
WEATHER SOLUTIONS AND OPERATIONAL SUPPORT SYSTEMS
✈ System consists of numerous sensors enabling the determination of:
✈ Rate of precipitation✈ Type of precipitation✈ Ambient temperature
✈ System measurements used to generate an accurate holdover time (HOT) for each departing aircraft based actual conditions
✈ System output can be configured to generate HOT information according to the client’s preference and operational needs
WEATHER SOLUTIONS AND OPERATIONAL SUPPORT SYSTEMS
WEATHER SOLUTIONS AND OPERATIONAL SUPPORT SYSTEMS
All data from the sensor units in the field are transmitted via cellular network to the SureWx central server
Data Communication
DIIS CYUL1401211755ZSN M1HLD OVR TYPE I 14 MINHLD OVR TYPE IV 78 MIN
DIIS CYUL1401211640ZFZRA M1HLD OVR TYPE I 4MINHLD OVR TYPE IV 31MIN
WEATHER SOLUTIONS AND OPERATIONAL SUPPORT SYSTEMS
WEATHER SOLUTIONS AND OPERATIONAL SUPPORT SYSTEMS
Applications
WEATHER SOLUTIONS AND OPERATIONAL SUPPORT SYSTEMS
Applications
WEATHER SOLUTIONS AND OPERATIONAL SUPPORT SYSTEMS
Applications
WEATHER SOLUTIONS AND OPERATIONAL SUPPORT SYSTEMS
Web Portals
WEATHER SOLUTIONS AND OPERATIONAL SUPPORT SYSTEMS
Web Portals
WEATHER SOLUTIONS AND OPERATIONAL SUPPORT SYSTEMS
Benefits
Improved operational planning for airports, carriers and service providers
Enhanced ATC processes within A-CDM
More frequent winter weather information for winter flight planning More accurate identification of de/anti-icing conditions Better identification of changing weather
Accurate determination of fluid holdover times Enable better fluid selection Enable expanded use of current holdover time information Expanded holdover times for all fluids, including Type I Reduction of human factor involvement in holdover time
assessment Reduction of departures with exceeded fluid holdover times
Economic Savings
Benefits
WEATHER SOLUTIONS AND OPERATIONAL SUPPORT SYSTEMS
Reduced costs of fluids and recovery/ recycling
Source Reduction of Glycol Reduction of environmental impacts and costs
Operational Improvement Airport throughput Time management
Airport Implications Runway maintenance Application of runway de/anti-icers
Benefits
WEATHER SOLUTIONS AND OPERATIONAL SUPPORT SYSTEMS
Transport Canada issued regulatory approval process for LWE systems in December 2007 (Exemption from CAR 602.11)
SureWx completed operational assessment with WestJet 2008-10, and began commercial service in 2010
FAA initiated Ops Demo for LWE systems in advance of winter 2013-14
SureWx Ops Demo partner is FedEx
Commercial Service
WEATHER SOLUTIONS AND OPERATIONAL SUPPORT SYSTEMS
WEATHER SOLUTIONS AND OPERATIONAL SUPPORT SYSTEMS
Installations
installations 2014-15
MONTREAL
CALGARY
EDMONTON
TORONTO TORONTO CITY
OTTAWA
installations 2014-15
INDIANAPOLIS
ANCHORAGE
installations 2014-15
PARIS-CHARLES DE GAULLE
LONDON-HEATHROW
WEATHER SOLUTIONS AND OPERATIONAL SUPPORT SYSTEMS
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