FLC OF AN LTT ACR ACFT OVERSHOT CLB ALT DUE TO STALL WARNING PROB DISTR.

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FLT WAS A SCHEDULED FERRY REPOS FLT AT THE END OF A DAY OF PART 135 FLYING. WAS SECOND FULL DAY OF FLYING WITH NEW FO (EX-MIL PLT WITH NO/LITTLE CIVILIAN FLYING). WX CONDITIONS WERE STRONG WINDS (NE AT 20-30 KTS); AND HVY SNOW. ACFT WAS A BEECH 1900D. THIS ACFT HAS STALL VANE HEAT; BUT THIS DOES NOT OPERATE UNTIL GEAR OFF THE GND. RIGHT AFTER LIFTOFF STALL HORN WENT OFF CONTINUOUSLY. THIS HAPPENS ON OCCASION WHEN BE-1900 HAS LANDED IN SNOW STORM. STALL VANE IS HOT; MELTS SNOW; COOLS AND FREEZES IN VANE. VANE APPEARED FREE AND ACFT WAS ICE FREE AT TKOF. BECAUSE COM WAS IMPOSSIBLE WITH STALL WARNING; I HAD FO PULL THE STALL AURAL WARNING CIRCUIT BREAKER. NOTE: ACFT WAS FLYING FINE; NO STALL AT ALL. FO WAS NEW AND ASKED SEVERAL QUESTIONS CONCERNING THE FLT. I WAS EXPLAINING WHAT WAS GOING ON WHEN ATC ADVISED; 'ACR FLT NUMBER; CHK ALT; MAINTAIN 7000 FT.' I LOOKED BACK AT THE ALTIMETER AND SAW I WAS AT 7600 FT MSL AND CLBING. I IMMEDIATELY RETURNED TO 7000 FT. I REALIZED THEN THAT THE STALL AURAL WARNING ALSO CTLS ALT ALERT TONE AND THEREFORE WE NEVER HEARD THE TONE. PROBS/RESOLUTION: I BECAME DISTRACTED AND SHOULD HAVE PAID MORE ATTN TO THE FLYING. BE-1900 STALL HEAT SHOULD OPERATE (AT LEAST AT A LOW SETTING) ON THE GND SO IT WORKS AT TKOF. MY COMPANY (ACR) TRAINS ITS FO'S (IN NO) EMER PROCS. A NEW FO COMES TO YOU VIRTUALLY USELESS; OTHER THAN TO BE PF. COMPANY SHOULD PROVIDE; AND FARS SHOULD REQUIRE IOE FOR FO'S SO THEY ARE TRAINED TO DO THEIR DAY-TO-DAY JOB WHEN THEY GO ON-LINE.