WASHINGTON, June 25 (Reuters) - RTX Corp ( RTX )

subsidiary Collins Aerospace is in talks with NASA to back out

of its contract to build new spacesuits for astronauts on the

International Space Station, setting back the agency's bid to

modernize its decades-old spacesuits, according to two people

familiar with the discussions.

The contract was part of $3.5 billion awarded to both

Collins and Axiom Space by NASA in 2022. A breakdown of the

contract was not provided at that time.

RTX and NASA did not immediately respond to requests for

comment.