737-9 MAX, United Airlines, N57478 (MSN 67723/9812)
MSN/Line
67723/9812
Aircraft Type
737-9 MAX
Engine Type
2x CFMI LEAP-1B28
Test Registration
Production Site
🇺🇸 Renton, US (KRNT/RNT)
Age of Aircraft
0 y 1 m (Aug 2026)
3 Total Flights 4 h 50 min Total Test Flight Hours
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Boeing Flight Activity
| Flight Activity | Airline | Registration | Callsign | HEX | Date & Time |
|---|---|---|---|---|---|
| Delivered BFI-SEA |   United Airlines | N57478 | UAL4212 | A760B3 | Departed BFI Aug 28 2026 18:14 UTCOpen Aviation Data NEWadbsexchange.comflightaware.com |
| Delivered on Contract | United Airlines | N57478 | - | A760B3 | Aug 28 2026 |
| Second Flight BFI-BFI - Customer Acceptance Flight | United Airlines | N57478 | BOE978 | A760B3 | Aug 25 2026 16:04-18:18 UTCOpen Aviation Data NEWadbsexchange.comflightaware.com |
| First Flight RNT-BFI | United Airlines | N57478 | BOE978 | A760B3 | Aug 13 2026 17:42-20:18 UTCOpen Aviation Data NEWadbsexchange.comflightaware.com |
| Spotted at RNT | United Airlines | N57478 | - | A760B3 | Added Aug 06 2026 |
Information such as "Customer Acceptance Flights" are based on community contributed data and may change at any time.
Although the best care is taken that the information displayed on this page is accurate, errors can and will happen from time to time.
Please make sure you put the effort in validating the flight information yourself with numerous other sources before copying and pasting :)