Cessna 210 Centurion / Turbo Centurion 210C; 210D
Air Traffic Control Fully Certified
Other / Unknown; Situational Awareness
ATC Issue All Types; Deviation / Discrepancy - Procedural Published Material / Policy
Air Traffic Control Issued New Clearance
Human Factors; Procedure; Weather
The weather conditions at the airport were [visibility] ¾ miles; FG (fog); VV002. The Centurion had just executed a missed approach due to the weather and was on RADAR vectors for another ILS to Runway XX. When the Centurion was about 2 miles south of the airport; he reported the approach end of Runway YY insight and requested a landing clearance. I immediately coordinated with the Local Controller for approval to send the Centurion to Runway YY. As soon as the Local Controller gave the approval; I cleared the Centurion for a Visual Approach; without hesitance; and switched him to the Tower. I was aware of the weather conditions; but I reacted to the pilots request before thinking the situation through. [I need to] maintain vigilance and attention to detail.
TRACON Controller reacted to the pilot's 'runway in sight' declaration and issued an inappropriate Visual Approach clearance; given the reported weather.