Maintenance and Pilots on the ball.
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Join Date: Jul 2007
Location: in the classroom of life
Age: 55
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MIC......that is eye watering 
TCM were understating it. More like 200dF+ would be better.
The funny thing is if you are intellectually honest with yourself and the science you simply compare the BSFC at takeoff on a typical and properly set up Lycoming, and ask....what is actually different here? The answer is nothing.
You did well under pressure
And just a warning for Lycoming owners with engines or FCU's that are new in the last 3 years, do not assume they are set right. I have seen at least half a dozen now, and that represents a high number in percentage terms of new ones I have seen that need to come off and onto the flow bench. The Avstar and Precision folk I think are letting them out the door even if they meet min spec, and probably some old timers that worked their knew they all needed to be a max spec.
MIC
You might be pleased to know there is a propulsion engineer at CASA that is intrigued by this situation, I have offered to simulate in flight and record data on the effects of minimum or less flow, and then I will show him pressure traces. Only a long shot but maybe he will take the issue further. Not holding my breath but it is the first sign of hope!
TCM were understating it. More like 200dF+ would be better.
The funny thing is if you are intellectually honest with yourself and the science you simply compare the BSFC at takeoff on a typical and properly set up Lycoming, and ask....what is actually different here? The answer is nothing.
You did well under pressure
And just a warning for Lycoming owners with engines or FCU's that are new in the last 3 years, do not assume they are set right. I have seen at least half a dozen now, and that represents a high number in percentage terms of new ones I have seen that need to come off and onto the flow bench. The Avstar and Precision folk I think are letting them out the door even if they meet min spec, and probably some old timers that worked their knew they all needed to be a max spec.
MIC
You might be pleased to know there is a propulsion engineer at CASA that is intrigued by this situation, I have offered to simulate in flight and record data on the effects of minimum or less flow, and then I will show him pressure traces. Only a long shot but maybe he will take the issue further. Not holding my breath but it is the first sign of hope!
