As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
XNA - FLIGHT 2660, THE CREW REPORTED A BLEED 1 LEAK IN FLIGHT THAT DID NOT GO AWAY. THE CREW SHUT DOWN THE NUMBER ONE ENGINE AS A PRECAUTION AND RETURNED TO XNA WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE PERFORMED OPERATIONAL AND LEAK CHECKS, AND SUBSEQUENTLY REMOVED AND REPLACED THE NUMBER TWO DATA ACQUISITION UNIT. OPERATIONAL TESTS WERE PERFORMED WITH NO DEFECTS, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.