B757 Undifferentiated or Other Model
Aircraft Equipment Problem Less Severe
Flight Crew Took Evasive Action; General Maintenance Action
Aircraft; Environment - Non Weather Related
On max power takeoff; at approximately 800 AGL; the left engine indicated an over temp of 647 with red border. No other indications existed. Selected VNAV for power reduction and EGT fell to within limits. Continued to destination and wrote up the overtemp. Maintenance reviewed the write-up; accomplished maintenance checks as per Maintenance Control direction; and signed off aircraft as cleared to fly. We had the same aircraft on the next leg. We accomplished a Reduced Power Takeoff with N1 at 89%. At 800 AGL; same engine over temped again indicating 646 and red border. We again wrote up aircraft overtemp and met Maintenance at the aircraft. We were told; 'over temps happen all the time out of ZZZ.' We discussed the problem of over temps; particularly two in a row on the same engine; and how the Captain and I were both concerned for safety. If the right engine hiccupped; we would be stuck climbing out with an over temping engine. (We went VNAV immediately when we saw the overtemp above 800 AGL; no telling how high it might have gotten had we not reduced power then). I feel this repetitive overtemp; (previously written up as well) is indicative of a greater problem with the engine; and the continued philosophy of 'it is within maintenance limits' is an additional problem that needs to be addressed. Do we have to wait until we shell an engine before we work on it?
B757 First Officer experiences two engine over temps in a row at 800 AGL with a maintenance inspection in between; and suggests the engine may be defective and should not be repeatedly signed off by Maintenance.