CREATE TABLE "table1_2409041_2" (
  "no_in_series" real,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "original_air_date" text,
  "production_code" real
);

Question: When 17 is the number in series who is the director?
SQL: SELECT "directed_by" FROM "table1_2409041_2" WHERE "no_in_series"=17;

Question: When 21 is the number in series what is the air date?
SQL: SELECT "original_air_date" FROM "table1_2409041_2" WHERE "no_in_series"=21;

Question: When 446004 is the production code who are the writers?
SQL: SELECT "written_by" FROM "table1_2409041_2" WHERE "production_code"=446004;

Question: When "body damage" is the title how many air dates are there?
SQL: SELECT COUNT("original_air_date") FROM "table1_2409041_2" WHERE "title"='\"Body Damage\"';