Sorry cannot find anything on the 13 Aug 1964 Japan crash, other than this newspaper article (image copy below). It contains little details, other than crew member names and relatives.
Other KB-50 / WB-50 hull losses from my notes.
-- Again nothing from the above date --
KB-50J
48-065
B-50D converted to KB-50J
lost: 14 October 1964
(421st ARS-USAF) Thailand, engine failure shortly after takeoff on training mission /supporting Yankee missions over Laos. (6 survived)
WB-50
48-122
lost: 08 Sep 1960
56th WRS Yokota AB, Japan
Capt John R. Willis 1Lt Robert W. Blanton 1Lt William L. Hesse 1Lt Howard S. Kelly 2Lt Lawrence K. Draper MSgt Claude M. Burgess MSgt James W. Fields, Jr. TSgt Vernon W. Powell A1C Edward L. Armstead A3C Alfred Campbell, Jr. A3C Barney Jablonski
WB-50
49-343
lost: 04 Feb 1959
59th WRS Kindley AFB, Bermuda
Capt Robert F. Aldrich Capt Andrew P. Stefurak Capt Robert A. Brown Capt William Potter, Jr. 1Lt Carlton S. Whitney 1Lt Frank C. King, Jr. MSgt Donald R. Fitzgerald TSgt Alfred E. Estes SSgt Jack A. Parmelee SSgt Harvey O. Ward A1C Franklin D. Radcliff A3C Scott Stephens, Jr.
WB-50
48-093
lost: 17 Jan 1957
58th WRS Eielson AFB, AK
Capt Robert E. Eichelberger Capt Harold W. Bales Capt William P. Spil 1Lt Robert E. McGough 1Lt Ralph L. Sampson 2Lt Bobby H. Spencer MSgt Woodrow B. Russell A1C John W. Cramer A1C Donald D. Dodds A2C Robert C. Glenn A2C Thomas F. Patterson A3C Roger D. Sigman
WB-50
49-295
lost: 15 Jan 1958
54th WRS Andersen AFB, Guam
Capt Albert J. Lauer Capt Marcus G. Miller Capt Clyde W. Tefertiller 1Lt Courtland Beeler III 1Lt Paul J. Buerkle, Jr. TSgt Delivan L. Gordon SSgt Kenneth L. Tetzloff SSgt Kenneth L. Houseman A1C Bernard G. Tullgren A1C Randolph C. Watts
WB-50
49-315 named "The Golden Heart"
lost: 31 Aug 1956
58th WRS Eielson AFB, AK
Maj Dale Richardson Capt Leonard N. Chapman, Jr. Capt Everett E. Dyson 1Lt William J. Wolters, Jr. 2Lt William W. Faustlin MSgt Fred T. Gregg, Jr. TSgt Richard K. Brown SSgt Ronald R. Ragland A2C Melvin O. Lindsey A2C Elijah Spencer A3C Douglas W. Maxon
KB-50J
48-098
B-50D-80-BO converted to KB-50J (reported as a WB-50D with the 56 WRS-USAF)
lost: 28 Dec, 1956
Night approach at Yokota AB, Japan. 10 killed, 2 survived
Capt Raymond Durr Capt Dewey A. Keithly Capt Leonard A. Klawa Capt Lawrence E. Monies 1Lt Waylon H. Moseley SSgt William A. Taylor A2C Gerald R. Arnn A2C John E. Hollis A2C Mose F. Thomas, Jr.