MDCRS - Where we are today; Where we are going.

MDCRS - Where we are today; Where we are going.

ARINCs Role in MDCRS MDCRS Management Team September 7, 2006 AFRICA | AMERICAS | ASIA PACIFIC | EUROPE | MIDDLE EAST Agenda History of MDCRS and where we are today Airline Participation Overview of MDCRS Data Processing and Communications AFRICA | AMERICAS | ASIA PACIFIC | EUROPE | MIDDLE EAST Page 2 History of MDCRS In 1986 Dr. John McCarthy recommended an automated aircraft reporting system for collecting weather observations.

ARINC fielded MDCRS in March 1991 FAA funded development of MDCRS server and operation of the service 3 Participating airlines; DAL, NWA, UAL AAL, FedEx, and UPS participation added. Government initiated reimbursement for partial costs incurred by airlines in 2003. SWA joined in 2005. Most recent contract between FAA and ARINC effective June 2006 with option periods through March 2011. AFRICA | AMERICAS | ASIA PACIFIC | EUROPE | MIDDLE EAST Page 3 Airline Participation Todays numbers 7 participating airlines

AAL, DAL, FedEx, NWS, SWA, UAL, UPS 1500 aircraft report Winds and Temps 60 UAL a/c report Turbulence (EDR) 25 UPS 757s report Water Vapor 100,000 observations per day (3M per month) Participating airlines collectively receive about $30K/month from the Government as cost reimbursement AFRICA | AMERICAS | ASIA PACIFIC | EUROPE | MIDDLE EAST Page 4 Airline Participation 1462 aircraft (June 2006) American 265 737, 757, 767, 777 Delta 375 737, 757, 767, 777, MD88, MD90 Fed Ex 194 A300, A320, MD10, MD11 Northwest 41

757 United 413 A319, A320, 737, 757, 767, 747 UPS 124 757, 767, MD11 SWA 50 737 AFRICA | AMERICAS | ASIA PACIFIC | EUROPE | MIDDLE EAST Page 5 Airline Participation No. of Observations 3,291,986 Observations from reporting aircraft June 2006 Airline No. of A/C No. of Obs. American

265 403,428 Delta 375 511,917 Fed Ex 194 437,665 Northwest 41 84,252 United 413 795,634 UPS 124

683,147 Southwest 50 375,943 AFRICA | AMERICAS | ASIA PACIFIC | EUROPE | MIDDLE EAST Page 6 MDCRS Data Processing by ARINC Airline Computers ACARS ARINC Data Network Service Central Processor ARINC Packet Network NADIN II BUFR

Messages ACARS BUFR Messages NOAA GSDESRL NOAA NCEP MDCRS Server AFRICA | AMERICAS | ASIA PACIFIC | EUROPE | MIDDLE EAST Page 7 Content of Typical MDCRS Messages Header info contains Aircraft ID, Departure Station, Destination Station.

Time of Observation Day, Hour, Minute (6 char.) Latitude in Deg, Min, Tenths (6 char.) Longitude in Deg, Min, Tenths (7 char.) Pressure Altitude, feet (4 char.) Wind Direction (3 char.) Wind Speed (3 char.) Static Air Temperature degrees C (4 char.) Roll Angle Flag (1 char.) Phase of Flight (when available) (4 char.) Turbulence (when available) (4 or 5 char.) Icing (when available) (4 char.) Water Vapor Mixing Ratio (when available) (4 char.) AFRICA | AMERICAS | ASIA PACIFIC | EUROPE | MIDDLE EAST Page 8 ARINC Processing Recognize ACARS message is a MDCRS message and route to MDCRS processor

Decrypt, if necessary Remove header, extract raw wx observation data Tag with airline and aircraft ID using codes supplied by NWS Validate format Convert data to BUFR format Batch BUFR messages and send to NWS approx every 15 min. Send ACARS messages in ASCII format to GSD-ESL. AFRICA | AMERICAS | ASIA PACIFIC | EUROPE | MIDDLE EAST Page 9

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