What was found
ON WALKAROUND, FOUND FAN DUCT PANEL SLIDE FROM 4 O'CLOCK POSITION. ALSO FOUND FAN DUCT PANEL FROM 4 O'CLOCK POSITION MISSING. NR1 ENG. REPLACED FAN DUCT PANEL SLIDE FROM 4 O'CLOCK POSITION IAW AMM 72-00-00-04, ACFT OK FOR SVC. (LP 8578478 - AIRCRAFT WAS GROUNDED)