Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_15851 ( "Aircraft" text, "Description" text, "Max Gross Weight" text, "Total disk area" text, "Max disk Loading" text )

### Question ###
What if the description of a ch-47d chinook?

### Accurate SQL ###

SELECT "Description" FROM table_15851 WHERE "Aircraft" = 'CH-47D Chinook'