ORIGINAL: mr_matt
ORIGINAL: pilott28
If I understand the question correctly, it will be up to the inspector to use judgement if the installation would reduce thrust (e.g. bifurcated pipe). The intent of the regulation as I would interpret it is actual installed thrust. The rule is silent as to this point.
Then why not have the inspector measure installed thrust?
EDIT: Thanks in advance and sorry if I am missing something obvious.