ALI

agree ,but in heading coupled should come to neutral and on pitch up should follow up/down not to roll right. and one more input if we remove elevator servo plug no roll to right either engage or handing hold, obvious there cannot be any pitch control.

yes, aircraft is parked on level ground.

Autopilot AP-105 when engaged controls rolls right at ground, in heading mode rolls right also when pitch up commanded. All wiring check carried out ,VG.DG.ATTITUDE SELECT RELAY.INS.AMPLFIRE.MODECUPLERS,CONTOLE PNL SWAPED with good one,wiring check carried out no help. Please advise.

AP105 autopilot when engaged on ground drift to right .....what have you done for your problem i need help.