There are 23 Ryan Aeronautical ST-A aircraft on the U.S. registry that TailWiki has a page for. Every one is built from the public FAA record — year, serial, engine, home base, and registration history — and owners and pilots add photos, trips, and stories on top. The ones listed here were built between 1935 and 1939.
N18922
1939 Ryan Aeronautical ST-A
Erwinna, PA
N18923
1939 Ryan Aeronautical ST-A
Snellville, GA
N9E
1939 Ryan Aeronautical ST-A
Portsmouth, VA
N18902
1938 Ryan Aeronautical ST-A
Ottumwa, IA
N17351
1937 Ryan Aeronautical ST-A
Hillsboro, OR
N17352
1937 Ryan Aeronautical ST-A
Vacaville, CA
N17353
1937 Ryan Aeronautical ST-A
Wichita, KS
N17357
1937 Ryan Aeronautical ST-A
Flower Mound, TX
N17369
1937 Ryan Aeronautical ST-A
Pottsville, PA
N26JC
1937 Ryan Aeronautical ST-A
Garden City, NY
N14955
1936 Ryan Aeronautical ST-A
Memphis, TN
N14982
1936 Ryan Aeronautical ST-A
Orange, CA
N14983
1936 Ryan Aeronautical ST-A
Montrose, CO
N14984
1936 Ryan Aeronautical ST-A
Modesto, CA
N16039
1936 Ryan Aeronautical ST-A
Sonoma, CA
N14911
1935 Ryan Aeronautical ST-A
San Luis Obispo, CA
N14954
1935 Ryan Aeronautical ST-A
Clarkston, WA
N14957
1935 Ryan Aeronautical ST-A
Smithville, MO
N14956
Ryan Aeronautical ST-A
Atlanta, GA
N14985
Ryan Aeronautical ST-A
Kalispell, MT
N14987
Ryan Aeronautical ST-A
Ventura, CA
N7779
Ryan Aeronautical ST-A
Las Vegas, NV
N86555
Ryan Aeronautical ST-A
Smithville, MO