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A B777 flight crew crossing the atlantic deviated around thunderstorms without ATC clearance when a timely clearance to do so was not received.
| Attributes | |
| ACN | 904949 |
| Time | |
| Date | 201008 |
| Local Time Of Day | 0001-0600 |
| Place | |
| Locale Reference | EGGX.ARTCC |
| State Reference | FO |
| Aircraft 1 | |
| Make Model Name | B777-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Flight Plan | IFR |
| Person 1 | |
| Function | Captain Pilot Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 160 Flight Crew Total 20000 Flight Crew Type 2500 |
| Events | |
| Anomaly | ATC Issue All Types Deviation - Procedural Clearance Deviation - Track / Heading All Types Inflight Event / Encounter Weather / Turbulence |
Narrative:
A line of thunderstorms required a left 10 mile deviation. Four other aircraft ahead of us did the same. I sent message for deviation to shanwick via cpdlc. After a while with no response I deviated 10 miles left of course. We then got a message from shanwick denying our request. Operational safety required deviation and shanwick offered no other option. We cleared the weather and returned to track.
Original NASA ASRS Text
Title: A B777 Flight Crew crossing the Atlantic deviated around thunderstorms without ATC clearance when a timely clearance to do so was not received.
Narrative: A line of thunderstorms required a left 10 mile deviation. Four other aircraft ahead of us did the same. I sent message for deviation to Shanwick via CPDLC. After a while with no response I deviated 10 miles left of course. We then got a message from Shanwick denying our request. Operational safety required deviation and Shanwick offered no other option. We cleared the weather and returned to track.
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.