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An air carrier flight crew encountered strong weather echoes on a transoceanic flight and requested deviation via datalink. When the clearance failed to arrive in a timely manner; the flight crew declared an emergency and began a deviation. Deviation clearance followed shortly thereafter.
| Attributes | |
| ACN | 753323 |
| Time | |
| Date | 200709 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzzz.airport |
| State Reference | FO |
| Altitude | msl single value : 32000 |
| Aircraft 1 | |
| Controlling Facilities | artcc : zzzz.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B747 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Experience | flight time last 90 days : 240 flight time total : 15000 flight time type : 1500 |
| ASRS Report | 753323 |
| Events | |
| Anomaly | inflight encounter : weather |
| Independent Detector | other flight crewa |
| Resolutory Action | controller : issued new clearance flight crew : declared emergency flight crew : exited adverse environment |
| Supplementary | |
| Problem Areas | ATC Human Performance Weather |
| Primary Problem | ATC Human Performance |
Narrative:
Requested clearance to deviate for strong echoes/WX on our track at XA09Z using cpdlc. No clearance received by XA17Z. Declared emergency and began deviation. At XA18Z received clearance to deviate. Canceled emergency.
Original NASA ASRS Text
Title: AN ACR FLT CREW ENCOUNTERED STRONG WEATHER ECHOES ON A TRANSOCEANIC FLIGHT AND REQUESTED DEVIATION VIA DATALINK. WHEN THE CLEARANCE FAILED TO ARRIVE IN A TIMELY MANNER; THE FLT CREW DECLARED AN EMERGENCY AND BEGAN A DEVIATION. DEVIATION CLEARANCE FOLLOWED SHORTLY THEREAFTER.
Narrative: REQUESTED CLRNC TO DEVIATE FOR STRONG ECHOES/WX ON OUR TRACK AT XA09Z USING CPDLC. NO CLRNC RECEIVED BY XA17Z. DECLARED EMER AND BEGAN DEV. AT XA18Z RECEIVED CLRNC TO DEVIATE. CANCELED EMER.
Data retrieved from NASA's ASRS site as of January 2009 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.