HUMAN SAFETY FACTOR - LOWER, LESS EFFICIENT ALTITUDES TO LIMIT POSSIBLE EXPOSURE TO RADIATION
COMMUNICATION FACTOR - FAA MANDATES RELIABLE COMMUNICATION OVER THE ENTIRE ROUTE OF FLIGHT
( SATCOM LOST AT 82 N/ RELIANCE ON HF )
NAVIGATION FACTOR - UAL AIRCRAFT EQUIPPED WITH GPS AND INERTIAL REFERENCE UNITS
DURING ADVERSE SOLAR ACTIVITY, UAL POLICY RESTRICTS FLIGHTS TO SPECIFIC ROUTES AND ALTITUDES. UAL POLICY IN PART, IS DERIVED FROM AND BASED ON THE NOAA SPACE WEATHER SCALES
POLAR WEATHER PACKAGE CONTAINS SOLAR ACTIVITY AND SWPC RECOMMENDATIONS
POLAR WEATHER PACKAGE CONTAINS SOLAR ACTIVITY AND SWPC RECOMMENDATIONS
ON SITE METEOROLOGISTS MONITOR SWPC WEBSITES AND MAINTAIN CONTACT WITH THE SWPC
26 FLIGHTS OPERATED ON LESS THAN OPTIMUM POLAR ROUTES DUE TO SOLAR ACTIVITY
CHICAGO TO HONG KONG ANCHORAGE STOP 4 CONSECUTIVE DAYS, PENALTY 180 TO 210 MINUTES
CHICAGO TO BEIJING PENALTIES 18 TO 55 MINUTES
BEIJING TO CHICAGO PENALTIES 55 MINUTES TO 80 MINUTES
SOLAR EVENTS AND RESPONSE
SEPTEMBER EVENT 2005
CHICAGO TO HONG KONG - ANCHORAGE STOP, SCHEDULE PENALTY 180 MINUTES
DECEMBER EVENT 2006
CHICAGO TO HONG KONG - ANCHORAGE STOP 2 CONSECUTIVE DAYS
5 OTHER FLIGHTS BOUND FOR ASIA FLEW LESS THAN OPTIMUM ROUTES AND/OR ALTITUDES
POLAR MOVEMENTS
3731 REPORTED MOVEMENTS IN 2005
5308 REPORTED MOVEMENTS IN 2006
7291 REPORTED MOVEMENTS IN 2007
GRL 15APRIL 2008
UAL835 1600 2201 KORD ZSPD 1601 2202 340 ORVIT
AAL289 1557 2205 KORD ZSPD 1604 2212 340 ORVIT
AAL167 1616 2311 KJFK RJAA 1616 2311 340 ORVIT
DAL91 1553 2316 KATL RKSI 1558 2321 340 ORVIT
DAL19 1428 2152 KATL ZSPD 1428 2152 340 ORVIT
UAL897 1646 2325 KIAD ZBAA 1652 2331340 ORVIT
ACA001 1736 2341 CYYZ RJAA 1736 2341 340 ORVIT
ACA015 1400 2006 CYYZ VHHH 1400 2006 340 ORVIT
ACA087 1746 2351 CYYZ ZSPD 1746 2351 340 ORVIT
AAL153 1811 0021 KORD RJAA 1811 0021 340 ORVIT
KAL038 1815 0024 KORD RKSI 1822 0031 340 ORVIT
NWA25 1839 0047 KDTW RJAA 1839 0047 340 ORVIT
KAL036 1735 0053 KATL RKSI 1739 0057 340 ORVIT
NWA11 1954 0202 KDTW RJAA 1954 0202 340 ORVIT
NWA71 2019 0226 KDTW RJGG 2019 0226 340 ORVIT
CCA982 2040 0310 KJFK ZBAA 2040 0310 340 ORVIT
UAL803 1705 2359 KIAD RJAA 1705 2359 380 ORVIT
NWA69 2001 0209 KDTW RJBB 2001 020 380 ORVIT
A DECADE AGO THERE WAS NO NEED OR REQUIREMENT TO TAKE SPACE WEATHER INTO OPERATIONAL CONSIDERATION. TODAY, UNITED CLOSELY MONITORS SPACE WEATHER AND IS CONSTANTLY ENHANCING PROCEDURES TO MEET CRITERIA THAT RECENT RESEARCH AND DATA MANDATE.