when was the last 300Hr was C/W. T/R D/S Splines get lubes @ 4 places. Was the Thomas coupling bolts not TQ @ Oil cooler or T/R G/B input? Saw that happen (No where near to this extent) to USPP L-3 during Gnd run up after a Baltimore based 145 had just finished a 300hr,. *They no longer were under USPP Contract) The Thomas coupling came loose enough under the oil tank to cut into aft fuselage. Again that was on a Gnd run up had it not happened then it would've in flt.