CREATE TABLE table_16514 ("Team" CLOB, "Outgoing manager" CLOB, "Manner of departure" CLOB, "Date of vacancy" CLOB, "Replaced by" CLOB, "Date of appointment" CLOB)

What are the dates of the outgoing manager colin hendry does appointments?
SELECT "Date of appointment" FROM table_16514 WHERE "Outgoing manager" = 'Colin Hendry'
SELECT "Date of appointment" FROM "table_16514" WHERE "Outgoing manager" = 'Colin Hendry'