TM 55-1520-240-PM PHASE NO. _____ Area Name and No. Aircraft Serial No. Date NO. 1 ENGINE AREA #4 Inspect Phase No’s Inspection Requirements Status Faults and/or Remarks Action Taken Initial ALL/C 4.12 No. 1 engine accessory gearbox chip detector for contamination. Remove inspect, and clean.  On helicopters (Without  74 ), refer to TM 55-2840-254-23. On helicopters (With  74 ), refer to TM 1-2840-265-23. Access 55, 58, 60 ALL 4.13 Compressor housing and visible portions of air diffuser for damage and security. Access 55, 58, 60 ALL 4.14 Compressor bleed band and retainer spacers for wear. Actuator for damage and security. Access 55, 58, 60 ALL 4.15 Combustion chamber housing and fire shields for cracks, hot spots, burned areas, and buckling. Access 55, 58, 60 ALL 4.16 Thermocouple bus bars for damage and security.  Access 55, 58, 60 ALL 4.17 Fire detection system sensing elements throughout the area for chafing, damage, and security. "FOD REMINDER" Check work area for tools and parts after completion of maintenance and inspection. 2-22