CPR JET EXPERIENCES RWY EXCURSION DURING LNDG PROC USING THRUST REVERSERS.

Narrative

AFTER A 1 HR FERRY FLT FROM OUR HOME BASE; WE WERE LNDG ON RWY 24 AT BOWMAN FIELD; KY; (KLOU); WHICH IS 4312 FT X 80 FT. PLT BRIEFED THAT HE WOULD USE THRUST REVERSERS ON OUR LTT JET DUE TO THE SHORT RWY. LNDG DISTANCE WAS COMPUTED TO BE ABOUT 2700 FT. WE TOUCHED DOWN ABOUT 600 FT FROM THE DISPLACED THRESHOLD; ON CENTERLINE. PLT EXTENDED THE SPOILERS AND WITH THE NOSE WHEEL ON THE GND; RAISED THE THRUST REVERSER LEVERS. I CALLED THE 'UNLOCK LIGHTS' AND THEN TOLD THE PLT WE ONLY HAD ONE 'DEPLOY' LIGHT ON THE R THRUST REVERSER. THE L DEPLOY LIGHT DID NOT ILLUMINATE. AT THIS POINT; THE ACFT STARTED DRIFTING TOWARDS THE R SIDE AS THE PLT APPLIED L RUDDER AND BRAKE AND TRIED TO STOW THE R THRUST REVERSER. THAT THRUST REVERSER WOULD NOT STOW (LEVER WOULD NOT GO DOWN) AND ENG WAS PRODUCING REVERSE THRUST. I HEARD THE R ENG SPOOL UP AND THEN DOWN AS THE PLT WORKED THE LEVERS; AND THE R DRIFT ACCELERATED. WE LEFT THE RWY AT ABOUT A 15 DEG ANGLE WITH THE L RUDDER FULLY IN AND THE L BRAKE FULLY ON (IN ANTI-SKID); AT ABOUT 65-70 KIAS; WITH ABOUT 1000 FT OF RWY REMAINING. THERE WAS NO DAMAGE TO THE ACFT. IN RETROSPECT; WE MIGHT HAVE USED EMER STOW AND THEN DEPLOYED THE DRAG CHUTE; OR AS A LAST RESORT; PULLED BOTH FIRE HANDLES TO SHUT THE ENGS DOWN (DO AWAY WITH ALL THRUST) AND TURNED ON THE AUX HYD PUMP FOR BRAKE PRESSURE. NOSE WHEEL STEERING DIDN'T SEEM LIKE A GOOD OPTION BECAUSE OF THE SPD AHEAD TO CENTER THE RUDDER BEFORE ENGAGING. THE BOTTOM LINE SHOULD BE: DON'T DEPEND ON THRUST REVERSERS USED ON THIS LTT. IF ONE SHOULD FEEL AN URGE TO USE THEM; ONE SHOULD FIRST PRACTICE HIS RECOVERY TECHNIQUES AND PROCS ON A SIMULATOR.