Fly_Guy Posted February 23, 2015 Report Posted February 23, 2015 Hello Guys, 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 71%. Is this Normal or should there be a greater gap in between the two? The aircraft is equipped with a start fuel switch, and upon reaching either 25% or 400'C when the switch is to be turned off, the EGT guage will momentarily stop and then increase with the start until the trigger is released, even with the start switch in the off position. Also, flying at 7000', +25'C OAT, 9500lbs for a weight, the rotor rpm started to drop off very "slightly". Maybe 2% or less. I had always figured the -17 was more or less "un-toppable" and a guy had to be extremely high before you would start to loose rotor RPM. Any help is greatly appreciated fella's... Thanks. Fly_Guy Quote
Coastal Posted February 23, 2015 Report Posted February 23, 2015 What do the power check numbers say? Should tell you right away EGT is acceptable. Quote
Coastal Posted February 23, 2015 Report Posted February 23, 2015 Whoops, meant to say IF EGT is acceptable. Quote
18speed Posted February 23, 2015 Report Posted February 23, 2015 Your numbers look good, what is your N1 at 7000 feet? Quote
18speed Posted February 23, 2015 Report Posted February 23, 2015 Have you changed your FCU lately, is your FCU topping set for 105N1 or greater? Quote
Fly_Guy Posted February 24, 2015 Author Report Posted February 24, 2015 Power check numbers are saying plus 40 to 45 consistently... N1 at 7000' was 101.5%.... I will look into N1 topping. Pretty sure the engineer did set it past 105N1 but I will double check with him.. Quote
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