B727 FAILS TO PRESSURIZE NORMALLY DUE TO SMOKE CTL SWITCH LEFT IN OPEN POS.

Narrative

ON A B727-200 ACFT; THE SMOKE CTL SYS WAS USED IN ACCORDANCE WITH THE COMPANY FLT MANUAL TO COOL THE COCKPIT WHILE ON THE GND. THE SMOKE CTL SWITCH WAS INADVERTENTLY LEFT IN THE 'ON' POS CAUSING THE ACFT TO PRESSURIZE AT A MUCH SLOWER RATE ONCE AIRBORNE. AT APPROX 14000 FT MSL; THE CABIN ALT WARNING HORN SOUNDED AT 10000 FT CABIN PRESSURE ALT. THE SMOKE CTL SWITCH WAS IMMEDIATELY IDENTED TO BE IN THE WRONG POS BY THE SO AND WAS CORRECTED TO THE NORMAL POS. THE CARGO HEAT OUTFLOW VALVE WAS CLOSED AS A PRECAUTION. THE CABIN ALT IMMEDIATELY BEGAN TO DECREASE FROM APPROX 10300 FT AT 500 FPM. NORMAL CABIN PRESSURE OF 1000 FT WAS ACHIEVED BY THE ELECTRONIC CABIN PRESSURE CONTROLLER APPROX 20 MINS LATER. FACTORS AFFECTING THE QUALITY OF HUMAN PERFORMANCE. THE PF; PLT MONITORING; AND SO WERE ALL RELATIVELY NEW TO THEIR CREW POS. THE PF AND THE PLT MONITORING WERE OFFICIALLY BEING OBSERVED IN A CHK RIDE ENVIRONMENT. WITH THE FAA OBSERVER ON BOARD; ESSENTIALLY ALL CREW MEMBERS WERE IN A CHK RIDE ENVIRONMENT.