What was found
(CAN) NR 4 MAIN WHEEL DISLODGED FROM ITS AXLE IN FLIGHT. NO OTHER APPARENT DAMAGE TO GEAR OR AIRFRAME.THE BRAKES AND TIRES ON THIS AXLE WERE REMOVED AND REPLACED JANUARY 06, 2000. NR 4 MAIN WHEEL HAS NOT BEEN LOCATED. SUPPLEMENTAL: RECORDS INDICATE NEW BEARING INSTALLED ONTO NR 4 WHEEL ASSY. TOTAL TIME ON BEARING, 367 CYCLES. FURTHER FOLLOW UP INDICATES THE FORMER HAVING THE SAME PART NUMBERS INSTALLED ONTO NR 4 WHEEL ASSY. TOTAL TIME ON THIS BEARING WAS 2036 CYCLES FROM FEB 28/97 TO MAY 20/00. ALTHOUGH BOTH BEARINGS ARE THE SAME PART NUMBER, THERE IS NO INDICATION AS TO WHAT POSITION THEY ARE INSTALLED INTO DURING WHEEL ASSY. BUILD UP.