Originally Posted by
readywhenyouare
It just seems that management highly prefers the A330 and with so many on order they're going to have to go somewhere.
You really ought to look at the age of the 763s before assuming 339s will replace 764s. DL publishes fleet size by type, with average age, in 10-Q and annual SEC filings. Oldest aircraft by type can be found on free sites like planespotters.net.
Directly from a press release announcing the conversion of some 359 orders to 339s:
Delta plans to retire older Boeing 767-300ERs in the years ahead as the aircraft reach the end of their serviceable life cycle.
https://news.delta.com/delta-orders-...easured-growth