Wiring Diagram For Elevator - Stall Speed at Clmax=x.xx - This appears only on the in-flight analysis, and only if the wing area and airframe weight were specified for the model. It indicates the range of speeds which are at or below the aircraft's stall speed at the maximum lift coefficient (i.e. the speed below which the aircraft cannot fly).. The #1 website for NICET Practice Tests, NICET study guides, Fire Alarm Code Knowledge, and General Fire Alarm Topics. We have up to date information on the newest fire alarm trends such as fire service access elevators, mass notification, voice intelligibility, occupant evacuation elevators and two-way communication for Areas of Refuge..