Originally Posted by
kiwi_andy
Its a Super D2 so has the Lycoming engine. The part number for the PT Rotor assy is 4-141-290-18 if that helps narrow it down?
If I recall there is a Lycoming SL that provides two separate methods to count cycles. Unfortunately I no longer have access to any mx docs that may help you. Perhaps an email to Soley who owns the SD2 STC may get you a free copy of the SL?