Originally Posted by
narvik
If there was
bread loaded on the flight, it simply goes back into the bread-pool for further distribution on other planes.
Don't forget, it has a minimum age of 10 days, but there is no maximum age set by United, nor an expiration date.
As long as it's rock hard & stale, it's good to go.
Indeed, the harder the exterior crust of the bread, the more it could resist contamination and infiltration by ambient germs around it.