TM 55-1520-240-PM PHASE NO. _____ Area Name and No. Aircraft Serial No. Date AFT ROTOR AND PYLON, AREA #6 Inspect Phase No’s Inspection Requirements Status Faults and/or Remarks Action Taken Initial AFT ROTOR AND PYLON, AREA #6 2, 4, C 6.1 Drain and service all rotary-wing head reservoirs. ALL/C 6.2 Check aft rotary-wing head retaining nut for specified torque. Refer to TM 55-1520-240-23. ALL/C 6.3 Inspect the installed horizontal hinge pins and bearings per TM 55-1520-240-23. ALL/C 6.4 Perform eddy current inspection of area surrounding the vertical web lightening holes on rotor hubs that contain such lightening holes. ALL/C 6.5 Aft rotary-wing head for corrosion, damage, and cracks in pitch varying housing, pitch shaft, and web areas of hub. Head retaining nut for security and installation of washer and retaining ring. Access 5, 47 "FOD REMINDER" Check work area for tools and parts after completion of maintenance and inspection. 2-35