|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||1201 To 1800|
|Locale Reference||atc facility : lax|
|Altitude||msl bound lower : 30000|
msl bound upper : 30000
|Controlling Facilities||artcc : zoa|
|Operator||common carrier : air carrier|
|Make Model Name||Widebody, Low Wing, 3 Turbojet Eng|
|Navigation In Use||Other|
|Flight Phase||cruise other|
|Route In Use||enroute : pacific|
enroute : other oceanic
|Affiliation||company : air carrier|
|Function||flight crew : captain|
oversight : pic
|Qualification||pilot : atp|
pilot : cfi
|Experience||flight time last 90 days : 300|
flight time total : 15000
flight time type : 3000
|Anomaly||aircraft equipment problem : critical|
other anomaly other
other spatial deviation
|Independent Detector||aircraft equipment other aircraft equipment : unspecified|
|Resolutory Action||none taken : unable|
|Air Traffic Incident||other|
About 17 mins from gateway, inbound to lax, we lost both omega receivers. I attribute that to solar flare activity as all aircraft had been complaining (us included) of a 30 min loss of HF communication. As we had been on course previous to this and had 2 other aircraft in sight slightly to our left, we continued on using flight plan headings. We declared navigation unreliable. We crossed the gateway 10 miles south of the intersection at which time we were able to get a good 'dd' fix on the FMS and continue in. All other omega equipped aircraft were experiencing problems (as reported either to ATC or to each other). I feel that one INS platform should be required on all omega aircraft as a backup.
Original NASA ASRS Text
Title: ACR WDB TRACK DEVIATION DUE TO LOSS OF OMEGA SYSTEMS CAUSED BY SOLAR BURST.
Narrative: ABOUT 17 MINS FROM GATEWAY, INBND TO LAX, WE LOST BOTH OMEGA RECEIVERS. I ATTRIBUTE THAT TO SOLAR FLARE ACTIVITY AS ALL ACFT HAD BEEN COMPLAINING (US INCLUDED) OF A 30 MIN LOSS OF HF COMMUNICATION. AS WE HAD BEEN ON COURSE PREVIOUS TO THIS AND HAD 2 OTHER ACFT IN SIGHT SLIGHTLY TO OUR LEFT, WE CONTINUED ON USING FLT PLAN HDGS. WE DECLARED NAV UNRELIABLE. WE CROSSED THE GATEWAY 10 MILES S OF THE INTXN AT WHICH TIME WE WERE ABLE TO GET A GOOD 'DD' FIX ON THE FMS AND CONTINUE IN. ALL OTHER OMEGA EQUIPPED ACFT WERE EXPERIENCING PROBLEMS (AS REPORTED EITHER TO ATC OR TO EACH OTHER). I FEEL THAT ONE INS PLATFORM SHOULD BE REQUIRED ON ALL OMEGA ACFT AS A BACKUP.
Data retrieved from NASA's ASRS site as of August 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.