Nc97 Posted August 24, 2011 Share Posted August 24, 2011 All, Been playing around in Afghanistan the past few months with this G-222 (C-27A) aircraft. Got me a good APU problem that may translate well from some of your Herc APU/GTC experiences. This APU will run just fine, loaded, unloaded, for roughly 5 top 10 minutes, then abruptly shut down. This happens either in flight, or on the ground. I have eliminated the Oil Pressure Switch, the Hot Oil Temp Switch, the Speed Switch, the Ignition Control Unit, and the fuel filter. Cracking Pressure I would assume is fine as it starts smoothly, and doesn't "burp" or appear to be struggling for fuel before shutdown. I do not have a gauge available to verify though. Befor I start shotgunning parts (I was thinking oil pump or fuel cluster) I thought of you guys. Any help and/or thoughs would once again be appreciated. Thanks. Quote Link to comment Share on other sites More sharing options...
Sparks Posted August 24, 2011 Share Posted August 24, 2011 I'll take a stab in the dark....Are you popping any circuit breakers? Could it be an electrical malfunction? Quote Link to comment Share on other sites More sharing options...
Nc97 Posted August 25, 2011 Author Share Posted August 25, 2011 No sir, not popping any circuit breakers. I am going to try swapping APU control panels next. Quote Link to comment Share on other sites More sharing options...
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