How many fatalities were there in the crash described as crashed at take-off due to engine failure?
CREATE TABLE "table1_229917_2" (
  "date_dd_mm_yyyy" text,
  "tail_number" text,
  "location" text,
  "fatalities" text,
  "brief_description" text
);
SELECT "fatalities" FROM "table1_229917_2" WHERE "brief_description"='Crashed at take-off due to engine failure';