As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C/W AD 88-25-09, RECEIVED INDICATION OF 3.0 IPS. TORQUED FAN NUT BECAME UNTORQUED. UPON PERFORMING A TEAR DOWN AND VISUAL INSPECTION, FOUND FAN NUT LOOSE ON SHAFT CAUSING BEARING TO SPIN FREELY ON SHAFT CAUSING GROOVES ON SHAFT. REPLACED SHAFT AND BEARINGS AND ALL HARDWARE WITH NEW. TIGHTENED NUT TO PROPER TORQUE. NO OTHER DEFECTS NOTED AT THIS TIME.