CREATE TABLE table_name_38 (record_description VARCHAR, date VARCHAR, pilot VARCHAR)

Date of 23 september 1961, and a Pilot of b.v. zemskov had what record description?
SELECT record_description FROM table_name_38 WHERE date = "23 september 1961" AND pilot = "b.v. zemskov"
SELECT "record_description" FROM "table_name_38" WHERE "23 september 1961" = "date" AND "b.v. zemskov" = "pilot"