AIR AMBULANCE FLC MAKES UNSTABLE APCH AND LNDG. FAILS TO USE BEFORE LNDG CHKLIST.

Narrative

ALTHOUGH RATED IN THE ACFT; I WAS DESIGNATED SIC DUE TO MY INEXPERIENCE IN SE ALASKA. ON A VISUAL APCH TO SITKA'S RWY 29; THERE WAS A QUESTION ABOUT THE LEGALITY OF OUR APCH CLRNC; WHICH WAS ISSUED BY THE CTR CTLR. THE LATEST WX ISSUED BY THE ON ARPT FSS INDICATED 600 FT BROKEN WITH 10 MI VISIBILITY. WITH THE RWY IN SIGHT; I CONTINUED MY APCH OVER THE STEEP TERRAIN E OF THE ARPT; WHILE THE CAPT TRIED TO NEGOTIATE A DIFFERENT CLRNC TO STAY LEGAL. ON A 4 MI FINAL I STATED MY INTENTION OF DOING A L 360 DEG TURN TO LOSE ALT AND SPD. THE CAPT REPLIED; 'NO; YOU'RE ALRIGHT.' SO I CONTINUED A HURRIED APCH; SELECTING LNDG FLAPS AT THE LAST SECOND AND TOUCHED DOWN AT VREF PLUS 15 ABOUT 1500 FT DOWN THE RWY. A COMPLETELY UNSTABLE APCH. IN OUR HASTE; WE NEGLECTED THE 'BEFORE LNDG' CHKLIST THUS FORGETTING THE THRUST REVERSER ARMING REQUIREMENT. BECAUSE OF THE DRY RWY; OUR MODERATE WT; AND EXCELLENT BRAKES; WE WERE ABLE TO GET STOPPED. I CONTEMPLATED A TOUCH-AND-GO WHEN THE THRUST REVERSERS FAILED TO DEPLOY. LESSONS LEARNED: 1) COMMUNICATE. CAPT THOUGHT I WAS REFERRING TO WX CONDITIONS FOR MY CIRCLE; NOT THE ACFT'S PERFORMANCE. CAPT WAS 'OUT OF THE LOOP' BECAUSE OF HIS REQUESTS FOR A DIFFERENT APCH CLRNC. HE WAS UNAWARE OF ACFT'S SPD AND ALT. 2) DON'T LET ANYBODY TALK YOU INTO A BAD SIT. THEY MAY NOT HAVE THE SAME INFO OR BE ALBEIT OR RECOGNIZE ALL ADVERSE CONDITIONS. 3) ASSERTIVENESS. I KNOW THE ACFT'S PERFORMANCE LIMITATIONS BUT I THOUGHT THE CAPT KNEW SOMETHING THAT I DIDN'T. HE THOUGHT THE SAME ABOUT ME. SINCE WE ARE BOTH RATED CAPTS; WE REFRAIN FROM 'TELLING' EACH OTHER HOW TO FLY. IN THIS CASE WE BOTH LACKED ASSERTIVENESS IN FIXING THE SIT OR VOICING OUR DISCOMFORT.