Small Transport; Low Wing; 2 Turboprop Eng
Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 3.5
Situational Awareness
Aircraft Equipment Problem Critical
Air Traffic Control Issued Advisory / Alert
Aircraft; Procedure; Human Factors
I was working LC1 and had Aircraft X; an unfamiliar pilot; handed off to me from the north.  I put him in a right downwind for 28R and noticed that when he turned final I did not observe a landing light.  I advised the pilot; 'I'm not observing your landing light; verify your gear is down' to which he replied; 'It is now'.  He landed safely without incident.
PDX Local Controller reports of an aircraft coming in to land; and Local does not observe a landing light. The Controller advises pilot that he doesn't observe a landing light.  Pilot puts down gear after the report.