ormed _steps 1, 2, and 3 of Sulfstream Drawing No. 1159S830189 Revision "C" date, 2-4-92 "Corrosion Repair - Ballast Instl., Cont. Surf., Elevator". Balanc,:. checked aoth ' eleVatOrs, found to be within liMiti per Maintenance Manual chapter 27. Reinstalled elevator_ same part number .and serial number