Created Sunday, Apr 18th 2021 10:06Z, last updated Tuesday, Apr 20th 2021 13:46Z
A United Boeing 787-9, registration N26970 performing flight
UA-899 from Delhi (India) to Chicago O'Hare,IL (USA), was enroute at FL360 about 380nm northwest of Novosibirsk (Russia) when the crew should have reported a mandatory reporting point to be handed off from Novosibirsk Center to the next center at about 00:43Z, when the crew did not report crossing that waypoint and communication with the aircraft was lost, the aircraft did not report on the next frequency. The aircraft continued northbound tracking on the planned polar route to Chicago. At about 01:22Z radio contact with the aircraft was re-established when the aircraft, now about 300nm north of the position of last radio contact, was enroute 70nm northwest of Noyabrsk (Russia). The aircraft landed safely in Chicago about 9.5 hours after radio contact was re-established.
On Apr 18th 2021 Rosaviatsia reported the aircraft did not respond on any frequency after the aircraft crossed mandatory reporting waypoint GIMAS (Coordinates N58.8656 E73.6889) separating Novosibirsk and Tyumen Control Centers without reporting the waypoint at 00:43Z. Radio contact was re-established at 04:22Z on frequency 132.2MHz.
On Apr 20th 2021 Rosaviatsia corrected their statement reporting the aircraft had been in contact with Novosibirsk on frequency 132.5MHz when radio contact was lost and the aircraft did not report the mandatory reporting point GIMAS at 00:43Z. Radio contact was re-established at 01:22Z on frequency 132.2MHz.
