I don't have too much experience with an EGT Guage in the 205A-1 with a T53-17 engine, but I want to run some numbers by you while the aircraft is on the ground and in flight and see if these numbers are "normal" or if they seem high to anyone..??
The temperature here is +24'C OAT, and our maximum starting and T/O EGT is 672'C, and 654'C for maximum continuous. (As per the placard)
We were flying at 2000', 35 PSI, 96% N1, and 555'C on the EGT Guage..?? Normal?
The difference between ground idle and flight idle is only 20'C. 540'C at 100% and 520'C at 7