Which manufacturer produced this fan blade? I acquired a fan blade a few years back, but have not had any luck finding out who manufactured it or what engine/aircraft it may have come from.
The only data I can find on the blade is as follows:

4922T12P01
99207 6018730P02
KGA 65444
GR.IN.
15.620

65444 is hand engraved again in larger size above the data listed, which I assume is the serial number. The blade is about 15" from tip to root. I am curious about the root itself, as I have not seen other blades with a mount like this one. If anyone can help out it would be greatly appreciated. 









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GE Aviation

Clue 1. Parts designed at the Lynn MA plant have part numbers of the form xxxxTxxPxx, where x is a digit. 4922T12P01 fits that pattern. 

The gr.in is another clue. That refers to a weight that would be used in balancing the fan. GE uses units of gr.in. I'm fairly sure that Pratt uses oz.in, snecma uses gr.cm. I'm not sure what RR uses. 

But the definitive piece of information is 99207. That is a CAGE code. 99207 is registered to GE Aviation's lynn plant. I looked it up here http://www.govcagecodes.com/