CAPT OF AN ACR LGT ACFT ALLOWED THE ACFT TO CLB ABOVE ASSIGNED ALT DURING MANUAL FLYING OF THE ACFT.

Narrative

CAPT WAS FLYING. WE WERE CLRED TO FL330. WE LEVELED OFF; AND I THOUGHT THE CAPT HAD ENGAGED THE AUTOPLT; BUT HE HAD NOT; AND CONTINUED TO HAND FLY. WE HAD SOME BUILD UPS IN FRONT OF US. I TURNED ON THE RADAR TO SEE IF WE WOULD BE ABLE TO PENETRATE; OR NEED TO CIRCUMNAV. BY THE TIME I LOOKED BACK AT THE GAUGES; THE CAPT WAS 800 FT HIGH AND STILL CLBING AND UNAWARE. AFTER I CALLED IT TO HIS ATTN; HE LOWERED THE NOSE; REACHED OVER AND TURNED OFF THE XPONDER. CTR CALLED AND SAID THEY HAD US HIGH. THE CAPT DIRECTED ME TO SAY THAT WE WOULD RESET OUR XPONDER WHILE HE LEVELED OFF AT THE CORRECT FLT LEVEL. THE CAPT WASN'T 'WITH IT.' HE ALMOST MADE SEVERAL OTHER MISTAKES; SUCH AS ALMOST MISSING A XING RESTRICTION. I FELT LIKE I WAS FLYING WITH A STUDENT. WE HAD JUST COME FROM A LONG LAYOVER IN SPOKANE; WHERE THE CAPT HAD SPENT PART OF THE AFTERNOON IN A BAR. THE CREW MET FOR DINNER; AND I SAW HIM DRINK AT LEAST 4 BEERS. HE LOOKED OK IN THE MORNING; BUT WAS OBVIOUSLY TIRED. IT DIDN'T OCCUR TO ME THAT HE MIGHT HAVE BEEN HUNG OVER; AND I'M ACTUALLY NOT SURE AT THIS TIME THAT HE WASN'T JUST TIRED.