What was found
NUMBER ONE ENGINE LP VIB AMBER 4.0 IN FLIGHT APPROX 14,000 FT IN CLIMB ,COMPLIED W/QRH PROCEDURE , POWER REDUCTION TO 75% N1 NESSORY TO BRING LP BACK TO GREEN RANGE ,DID NOT OCCURE WHILT TL WAS IN MOTION ,DID NOT OCCURE WHILE IN ICING CONDITIONS.-C/A-COMPLIED WITH ETN EJ-72-004. TDMI OPENED PER ETN EJ-72-004 FOR 25FC AUTH# 031T7252,ON #1 ENGINE. CLOSED ENG TDMI 031T7252 FOR VIBRATION DATA ANALYSIS, THE ENG GROUP HAS ANALYZED THE TRENDS AND DETERMINE THAT NO ACTION IS REQUIRED AT THIS TIME, TRACK # EHM-2019-04-23 031-LH-0019, WE WILL KEEP ENG ON WATCH.