Thanks for the answers!
The jet would become tank to engine with no crew action if all of the override jettison pumps failed during takeoff, I guess. Perhaps that is sufficient to satisfy the certification requirements.
The 744/-8 is not normally "tank to engine" for takeoff unless the total fuel quantity at blockout is less than ~119,000 lb (relatively uncommon, would be only for flights shorter than 4 hours or so). Otherwise, some of the fuel tanks are providing fuel to multiple engines during takeoff, albeit with multiple fuel pumps.
Last edited by RandomPerson8008; 31st Jul 2020 at 07:41.