An entry-level member of the NTSB is on the General Schedule 9 of salaries, and thus makes a little more than $30,000/year.
A senior level working about 14 years for the agency will be General Schedule 13 or 14, which makes about $55-70,000/year.
A senior staff member of the agency will make a little less than $100,000/year.
To be on the Board, you need to be specialized in a certain area. Examples include aircraft avionics, hydraulics, data specialists, and helicopter specialists.