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_name_95 ( tenure VARCHAR, cause_of_death VARCHAR, badge_serial_number VARCHAR )

### Question ###
What is the Tenure of the Officer who died in a helicopter accident with Badge/Serial Number 16805?

### Accurate SQL ###

SELECT tenure FROM table_name_95 WHERE cause_of_death = "helicopter accident" AND badge_serial_number = "16805"