The last leg of the flight, over Nevada and the Sierra Nevada range, was characterized by cloud strata, making navigation difficult in low light conditions. Maughan, from Logan, Utah, was familiar with the terrain however and recognized sufficient landmarks to approach San Francisco Bay from the north. He used a revolving light on Alcatraz Island to guide him to Crissy Field, the military airfield at the Presidio of San Francisco, where he landed in front of an estimated 50,000 spectators at 9:46 p.m. Pacific Standard Time, reportedly a minute before dusk.