What it Duration, when Test Flight is Free Flight #3?
CREATE TABLE "list_of_alt_flights" (
  "test_flight" text,
  "date" text,
  "speed" text,
  "altitude" text,
  "crew" text,
  "duration" text,
  "comment" text
);
SELECT "duration" FROM "list_of_alt_flights" WHERE "test_flight"='free flight #3';