SUPER 80 FLC PASSES THROUGH LOC WHEN CLRED TO INTERCEPT.

Narrative

ON HDOF FROM CTR TO APCH; FLT RECEIVED CLRNC TO FLY HDG AND INTERCEPT LOC RWY 27. FO FLYING AND FAILED TO ARM OR INTERCEPT LOC. APPROX 2-3 MI THROUGH LOC; CAPT NOTICED FLT HAD PASSED THROUGH LOC. CORRECTIVE HDG INITIATED AND APCH QUESTIONED IF FLT HAD INTERCEPTED LOC. APCH THEN GAVE A CORRECTIVE HDG TO JOIN; FLT PROCEEDED NORMALLY TO LNDG. NO TFC CONFLICTS OR AIRSPACE TRANSGRESSIONS WERE NOTED OR BROUGHT TO OUR ATTN. MY OWN TECHNIQUE CALLS FOR ARMING LOC ON AUTOPLT CTL PANEL; ANY TIME CLRED TO INTERCEPT. ADDITIONALLY; AS A TECHNIQUE; I NORMALLY CALL ARMED SO AS TO AVOID SITS SUCH AS DESCRIBED. I FEEL IT IS JUST AS IMPORTANT TO CONFIRM ARMING OF NAV FUNCTIONS; AS IT IS THE ARMING OF ALT FUNCTIONS. HOWEVER; SINCE IT IS NOT COMPANY PROC; NOT VERY MANY PLTS ARE AS VOCAL CONCERNING ARMING OF LOC/VOR/ILS. PERHAPS WE SHOULD ADOPT A PROC SIMILAR TO OUR PROVEN ALT ALERT SETTING PROC TO AVOID THESE SITS; AS I KNOW I WILL CERTAINLY BECOME MORE DILIGENT WITH MY TECHNIQUE IN ANY CASE. FAILURE OF FO TO ARM LOC AND FAILURE OF CAPT TO VERIFY WERE OBVIOUSLY THE REASONS FOR THE DEV. HVY WORKLOAD IN TERMINAL AREA -- IE; CHKLIST; ETC; MAY HAVE CONTRIBUTED TO FAILURE ON BOTH SIDES.