As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW - FLT 1225 - EN ROUTE DFW-PSP, DETECTED AIRCRAFT VEERING TO LEFT AND NR 1 SIDE ENGINE AT IDLE. RETURNED DFW AND LANDED WITHOUT FURTHER INCIDENT. REPLACED NR 1 SIDE ENGINE. REPLACED 13TH STAGE BLEED DUCT AT DUCT WALL. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)