Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 7
Situational Awareness
Aircraft Equipment Problem Less Severe; Deviation - Track / Heading All Types; Inflight Event / Encounter CFTT / CFIT
Air Traffic Control Issued Advisory / Alert; Air Traffic Control Issued New Clearance
Aircraft; Human Factors
Aircraft X came into GJT from the east; I asked him what approach he wanted to RY 29 and he requested the RNAV with direct HANSU. I explained to him that to turn him southwest bound to get him lower and then to expect direct HANSU from south of the fix. When he got lower; I gave him a 330 heading when able direct HANSU. Then I went back and cleared him for the approach. I immediately noticed he was going past HANSU and into an area of higher terrain. I gave him the low altitude alert and asked him if he could visually see the ground. He replied that he could and that he was correcting. He said he had a problem with the 'box' and asked to be vectored for the same approach; but with vectors to intercept the final. He landed without incident.
Denver TRACON Controller reported an aircraft did not turn as cleared and entered an area of higher terrain.