What was found
FAN DUCT PANEL (LPTACCV SCOOP) HAS LOOSE, AND WORN FASTENER AT CENTER, UPPER LOCATION. PANEL LOCATED AT 4 - 5 O`CLOCK ACF, NR 1 ENGINE FASTENER DAMAGED. ACFT GROUNDED. REMOVED THE LPTACC SCOOP AND STUCK FASTENER IAW AMM 72-23-07. REMOVED AND REPLACED A DAMAGED KEY LOCK INSERT AT THE NR 1 ENGINE AT THE 4 O`CLOCK POSITION FAN DUCT PANEL IAW 70-42-13-350-014. INSTALLED FAN DUCT PANEL IAW AMM 72-23-07-400-801-F00, IDLE LEAK CHECK OF HMU LINES IAW AMM 75-32-00-730-801-F00, NO LEAKS NOTED.