There are 15 Waco YKS-6 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 1936 and 1939.
N16522
1939 Waco YKS-6
Sheridan, WY
N15720
1936 Waco YKS-6
Chino, CA
N16241
1936 Waco YKS-6
Deland, FL
N16246
1936 Waco YKS-6
Alliance, OH
N16249
1936 Waco YKS-6
Westmoreland, TN
N16507
1936 Waco YKS-6
Fairfield Township, OH
N16508
1936 Waco YKS-6
Griffin, GA
N16512
1936 Waco YKS-6
Casper, WY
N16517
1936 Waco YKS-6
Poplar Grove, IL
N16576
1936 Waco YKS-6
Oklahoma City, OK
N16580
1936 Waco YKS-6
Bakersfield, CA
N16588
1936 Waco YKS-6
Dana Point, CA
N16598
1936 Waco YKS-6
Cross, SC
N16211
Waco YKS-6
Chimacum, WA
N34214
Waco YKS-6
Troy, OH