hrough (k) and D (m) to (o). All maintenance performed IAW GEM MM 27-01-00. Completed weekend nights Discrepancy: 12.121 CMP GHB 271810 ACTUATOR, L ELEVATOR TRIM TAB Resolution: COMPLIED WITH CMP CHB 271810 ACTUATOR, L ELEVATOR TRIM TAB Removed trim tab actuator P/N 159SCC100-21 S/N 56. Installed trim t