Abstract: An aircraft weight and balance system includes a user interface that displays an interior layout of an aircraft with seat icons and cargo icons corresponding to seats and cargo zones onboard the aircraft. The seat and cargo icons are moveable to different locations within the interior layout, and an updated weight and center-of-gravity of the aircraft is automatically determined based on the different locations of the seat and cargo icons. An aircraft weight and balance method includes displaying an interior layout of an aircraft on a user interface including seat icons corresponding to seats onboard the aircraft, moving one or more of the seat icons to a different location within the interior layout based on a user input, determining an updated weight and center-of-gravity of the aircraft based on a current location of the seat icons, and displaying the updated weight and center-of-gravity of the aircraft on the user interface.

Abstract: A self-contained hazard marker which is easily deployed and highly visible. The hazard marker utilized an elevated collapsible illumination device which utilizes LEDs mounted to a flexible printed circuit board in a fashion that allows the circuit board to be formed into a tubular shape with the LEDs on the outer surface of the tube in a fashion that disperses the light in a 360 degree pattern. These LEDs can be illuminated in various patterns thereby producing various effects. They can produce a rotating light effect, a blinking light effect, a strobe effect and a simulated flare. The elevated illumination device is also collapsible into the body (protection chamber) of the marker in the event a vehicle is driven over the marker. The marker has a ramp shape to it that starts at ground level and extends to the top of the unit. This shape inherently prevents the unit from lateral movement when impacted.