TM 1-1520-238-PM
275/(276 blank)
PHASE NO.
Date
Aircraft Serial No.
Area Name and No.
MAIN ROTOR 10
Inspect
Phase
Nos.
Initial
Action Taken
Faults and/or Remarks
Status
Inspection Requirements
2,4
23.
Blade de-icing housing for damage or
drive plate misalinement.
C
2,4
24.
Check main rotor upper bearing using
12x magnifying glass. Check bearing
C
grease for contamination and burning.
Repack bearing.
2,4
25.
Check main rotor lower bearing using
12x magnifying glass. Check bearing
C
grease for contamination and burning.
Repack bearing.
ALL
26.
Main rotor gear shaft for cracks,
distortion, corrosion, and for chipped,
C
broken, scored or worn spline teeth.
FOD REMINDER
Check work area for tools and parts after completion of maintenance and inspection.