COMPANY PLT IN R SEAT; POSSIBLE BUYER FLYING THE C650 AND JUMP SEAT PAX MISS THE ASSIGNED ALT WHEN ISSUED. ALTDEV.

Narrative

DURING CLBOUT FROM TEB; ZNY ASSIGNED 17000 FT. CLBING THROUGH 16500 FT; THE PNF NOTICED THE ALT ALERT SET ON 19000 FT. WHEN ASKED FOR CLARIFICATION THE CTLR INITIALLY STATED 'CLRED TO 6000 FT -- NO; 17000 FT; 17000 FT.' BY THIS TIME THE ACFT WAS AT 17500 FT AND RETURNED TO 17000 FT. FLT WAS A DEMONSTRATION FLT WITH A CE650 TYPE RATED CAPT IN BOTH L AND R SEATS. THE CREW HAD NEVER FLOWN TOGETHER AND HAD NO REAL CRM SKILLS ESTABLISHED. THE INCORRECT ALT COULD HAVE EASILY BEEN NOTICED EARLIER BY THE PF BUT HE WAS NEW TO THE AVIONICS AND WAS NOT CONCENTRATING ON THE PNF'S ACTIONS. GOOD CRM IS A MUST; ESPECIALLY WHEN CREWS ARE UNFAMILIAR WITH EACH OTHER. SUPPLEMENTAL INFO FROM ACN 326588: THE CUSTOMER WAS IN THE L SEAT; OPERATOR'S PLT IN R SEAT; AND I WAS IN JUMP SEAT. PNF; R SEAT; WAS VERY BUSY WITH CHKLIST; ATC; AND UNFAMILIAR PLT IN L SEAT. CUSTOMER IN L SEAT WAS CONCENTRATING ON FLYING ACFT CONFIGURED SLIGHTLY DIFFERENT THAN HIS. I WAS UNABLE TO HEAR RADIO VERY WELL IN JUMP SEAT BECAUSE OF PAX DISTRS. THE WAY TO HAVE PREVENTED THIS WOULD HAVE BEEN FOR PF TO HAVE BEEN LISTENING MORE ATTENTIVELY. ALSO; I SHOULD HAVE BEEN LISTENING MORE CAREFULLY SO THAT I COULD HAVE DISCOVERED THE PNF DIALING IN THE WRONG ALT. DEMONSTRATING THE ACFT IS MORE DEMANDING; THEREFORE WE SHOULD HAVE BEEN MORE ALERT AND HELPFUL.