What was found
FLT 6592 - IAD-AVP - DURING CLIMB, MADE A UNSCHEDULED LANDING DUE TO LEFT EGT FLUCTUATES OF 20 PERCENT, NO FLUCTUATION WITH SRL OFF. AIRCRAFT RETURNED TO GATE WITH NO FURTHER INCIDENT. MANTENANCE OPENED DMI 07255, MEL 77-2 ON SRL, MAINTENANCE CLOSED DMI 07255 BY REMOVING AND REPLACING PROP GOV MONOPOLE. OPS CHECK OK, AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)