CREATE TABLE table_42152 ("Location" TEXT, "Aircraft" TEXT, "Tail number" TEXT, "Aircraft damage" TEXT, "Fatalities" TEXT)

What tail number was on the an-26, with 25/25 fatalities?
SELECT "Tail number" FROM table_42152 WHERE "Aircraft" = 'an-26' AND "Fatalities" = '25/25'
SELECT "Tail number" FROM "table_42152" WHERE "Aircraft" = 'an-26' AND "Fatalities" = '25/25'