As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 1561 RETURNED DUE TO NR 1 ENGINE COMPRESSOR VANE. LEFT EPR 1.370+0.5/ RIGHT EPR 1.370+.003 LEFT EPR RETURNED TO NORMAL INDICATIONS 1.5 HOURS POST EVENT. CONFIRMED POST SB 75-0122 VSV ACTUATOR INSTALLED. PERFORMED TSM TASK IAW 75--30-00-310-352-A. ACCOMPLISHED LUBRICATION #1 ENG VSV ACT IAW AMM 75-32-42-640-302. PERFORMED HIGH POWER ASSURANCE RUN TEST 11, 71-00-00-710-013. ALL CHKS NORMAL. OK FOR SERVICE. ALL PARAMETERS CHECKED NORMAL.