flying ANY underwing engined airplane without hydraulics:
1. add power on both, nose goes up, plane goes up (within limits)
2. reduce power on both, nose goes down, plane goes down.
3. add power on right engine, reduce power on left engine , plane skids around to left, poorly...perhaps losing altitude, perhaps gaining.
4. add power on left engine, reduce power on right engine, plane skids around to right, poorly, perhaps losing altitude perhaps gaining.
one could with God's good graces manage a marginal landing...see Sioux city DC10 accident.
A computer program to manipulate thrust was developed for the air force (USAF) to show how a battle damaged plane could be landed...using thrust only.