TM 1-1520-238-23 Change 4 1-413 1.138. OVERHAUL AND RETIREMENT SCHEDULE – continued Part Name Retirement Interval Notes Retirement Interval Hours Overhaul Interval Notes Overhaul Interval Hours Part Number Longitudinal Actuator Support 7-311511175 20,000 7-311511175-5 20,000 7-311511175-7 20,000 7-311511175-11 10,100 7-311511175-15 10,100 7-311511175-17 10,100 Collective Actuator Support Assy 7-311511176 20,800 7-311511176-5 18,600 7-311511176-7 18,600 Lateral Actuator Support 7-311511139 20,000 7-311511139-3 20,000 7-311511139-5 4,500 7-311511139-7 4,500 7-311511139-9 4,500 Stabilator Actuator 7-311D10018 22,500 7-311D10018-3 22,500 Stabilator Fitting 7-311D10023 5 7-311D10023-3 22,500 Mast M/R Support 7-311160020 5,300 7-311160020-5 5,300 Mast Base M/R Support 7-311160035 5,300 Base Assembly, Mast Support 7-311160030 5,330 7-311160030-7 5,330 Strut, Fwd Center, LH 7-311160055-1 8,050 Strut, Fwd Center, RH 7-311160055-2 5,240 Strut, Fwd Side, LH 7-311160060-1 5,240 Strut, Fwd Side, RH 7-311160060-2 5,240 Strut, Aft Side, LH 7-311160070-1 12,800 GO TO NEXT PAGE