Lycoming crankshafts
Can anyone help me with a decode of a serial number on a 13F27737 IO 540 crankshaft. It has a letter then 9 numbers then 2 letters i.e. V_ _ _ _ _ _ _ _ _ CT. It also has a small stamp on the flange with LP 99 > on it. I am trying to determine if it is subject to SB 550 but the factory is not been very helpful.
Cheers,
Ice.