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Solar activity unexpectedly disrupted ACARS; satcom and HF communications on a polar route for several hours.
| Attributes | |
| ACN | 952619 |
| Time | |
| Date | 201106 |
| Local Time Of Day | 0001-0600 |
| Place | |
| Locale Reference | ZZZ.ARTCC |
| State Reference | US |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | B777 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Route In Use | Other Polar |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Air/Ground Communication |
| Person 1 | |
| Function | Dispatcher |
| Qualification | Dispatch Dispatcher |
| Events | |
| Anomaly | Deviation - Procedural FAR |
Narrative:
Flight released via polar route devid. Center called my sector looking for a position report for the flight over devid because they were unable to contact them on HF. Flight was due to cross twelve minutes earlier. I tried to ACARS the flight and tried the satphone with no success. A commercial radio service reported that another carrier was also having HF problems and that there was some apparent solar activity. I tried ACARS and satphone about every 5-10 minutes with no success. I was unable to contact the flight until over an hour later and then normal ACARS communications resumed. Flight reported they were out of HF and satcom for 2 hours over the pole. After regaining contact with the flight I informed center watch desk and our duty officer that we were back in contact with the flight.
Original NASA ASRS Text
Title: Solar activity unexpectedly disrupted ACARS; SATCOM and HF communications on a Polar route for several hours.
Narrative: Flight released via Polar route DEVID. Center called my sector looking for a position report for the flight over DEVID because they were unable to contact them on HF. Flight was due to cross twelve minutes earlier. I tried to ACARS the flight and tried the SATPHONE with no success. A commercial radio service reported that another carrier was also having HF problems and that there was some apparent solar activity. I tried ACARS and SATPHONE about every 5-10 minutes with no success. I was unable to contact the flight until over an hour later and then normal ACARS communications resumed. Flight reported they were out of HF and SATCOM for 2 hours over the pole. After regaining contact with the flight I informed Center watch desk and our Duty Officer that we were back in contact with the flight.
Data retrieved from NASA's ASRS site as of April 2012 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.