Widebody; Low Wing; 2 Turbojet Eng
Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 247; Flight Crew Total 13867; Flight Crew Type 11603
Communication Breakdown
Deviation - Track / Heading All Types; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter Weather / Turbulence
Flight Crew Returned To Clearance
Human Factors; Weather
Approaching 4540N in Gander Oceanic airspace. A weather deviation 10 miles left of track. Was back on track by 4540n. Gander Control questioned deviation.
On NAT X; we deviated left of course for weather between N43W050 and N45W040 10 miles. We returned to track centerline after weather deviation before N45W040. We were questioned by Gander Oceanic about our deviation upon contact with them.
An air carrier flight crew deviated for weather in Gander Oceanic Airspace without a clearance.