Control systems were investigated in which the engine regulator s and the attitude stabilizer blend well together. The engine initially studiedwas of the 280-hp Artouste turboprop type. Three simple configurations were analyzed by means of root locus procedures: (1) intergral control in the rpm feedbak loop and proportional control in the temperature feedback loop; (2) proportional control in the rpm feedback loop and integral control in the temperature feedback loop; and (3) integral control in the rpm feedback loop and rate control in the temperature feedback loop. No specific grain values were recommended, but the third configuration seemed likely to give the best dynamic response. Figures showing the main pole-zero points for all 3 loops in each configuration are presented.