BE99 CARGO ACFT LANDS GEAR UP.

Narrative

I BELIEVE THERE'RE 2 MAIN FACTORS LEADING TO THIS INCIDENT: 1) SEVERE TURB ON DSCNT AND; 2) FLYING WITH A FO FOR THE FIRST TIME. THE COMPANY I FLY WITH USES A TIME BUILDING PROGRAM WITH A TRAINING COMPANY. THE FO WAS A NEW PLT WHO SEEMED COMPETENT WITH HIS FLYING SKILLS. I BELIEVE THE PROB LIES WHERE MYSELF BEING A SINGLE PLT FOR 3 YRS; NO CREW RESOURCE TRAINING; SHOULD HAVE CONTINUED TO FLY ALL THE LEGS AND HAVE HIM CALL OUT THE CHKLIST. INSTEAD I TRIED TO OPERATE IN A CREW LIKE MANNER AND WHEN I WAS DISTRACTED BY HIS OPS WITH THE ACFT I DISMISSED; AND DIDN'T EVEN HEAR THE WARNINGS FOR MY GEAR. I ALLOWED THE FO TO FLY THE EKO-ENV LEG AND IN CRUISE FLT WE HIT SOME SEVERE TURB OVER THE RUBY MOUNTAINS AND ON THE DSCNT INTO ENV. WE WERE TOO HIGH ON THE DOWNWIND LEG INTO ENV DUE TO GOING HIGHER ON THE CRUISE PORTION TO TRY AND GET SMOOTH AIR. WHILE ON THE DSCNT I READ THE 'IN RANGE' CHKLIST STATING; 'GEAR TO GO' AS PER COMPANY POLICY. WE WERE TOO FAST FOR GEAR AT THE TIME SO I TOLD HIM TO BRING PWR BACK; APCH FLAPS; SO I COULD GET THE GEAR DOWN. THEN I BECAME DISTRACTED BY HIS TROUBLING OF HANDLING THE ACFT ON BASE TO FINAL AND AT THIS TIME SHOULD HAVE TAKEN THE AIRPLANE BUT INSTEAD OPTED TO HELP HIM AND GIVE HIM THE EXPERIENCE. CONSEQUENTLY; WHILE TALKING HIM THROUGH I DID NOT GO BACK TO MY NORMAL FLOW AND CHKLIST PROC OF VERIFYING; 'GEAR DOWN AND 3 GREEN' CALLOUT TO MYSELF. ENDING THE FLT WITH AN UNINTENTIONAL GEAR UP LNDG. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR STATED THIS WAS CONSIDERED AN INCIDENT BY FAA. RPTR'S CERTIFICATE WAS SUSPENDED FOR 10 DAYS. THE ACFT WAS A BE99. THE BELLY OF THE ACFT WAS DAMAGED AND; BEING TURBO CHARGED; BOTH ENGS HAD TO BE REPLACED.