What was found
(CAN) ON FINAL APPROACH, EXPLOSION, SMOKE AND THEN FIRE FROM BOTTOM OF PILOT'S NR 1 WINDOW, SHORTLY AFTER WINDOW CRACKED. TOTAL INCIDENT TIME APPROXIMATELY 15 TO 20 SECONDS. FIRE WAS EVIDENT FOR ABOUT 2 SECONDS. LEFT NR 1 WINDOW AND WINDOW HEAT, COMPUTER REPLACED.