Pitts - yes, MOD45 was not invented to monitor the shaft for cracking. If I am honest I can't remember which one it is but there is MOD70 and MOD45, and one is the bevel gear, one is the oil pump drive gears. I think MOD45 is the bevel gear, so a degredation of the bevel gear teeth and/or bearings could trigger a MOD45 alarm. Whatever the cause in that area, I think you would want to follow the new EOP and find somewhere to land!