The CA 574-574 "Quad-Dart"Think of it as a BAe 146 on steroids. It’s a high-wing, four-engine regional jet designed for short runways, high altitudes, and "impossible" approaches.1. Technical SpecificationsRole: STOL (Short Take-Off and Landing) Regional Airliner.Passenger Capacity: 70–90 passengers.Powerplant: 4x CA-MicroCore "Sprite" Turbofans. These engines are small, high-pitched, and incredibly responsive.Performance:Cruise Speed: Mach 0.72 (designed for efficiency at lower altitudes).Takeoff Run: Less than 3,500 ft (it can take off from many "General Aviation" strips).Special Ability: Integrated Tail Speedbrake (the tail splits open like a clam to slow down rapidly during steep descents).2. Design Features for SimplePlanesHigh-Wing Configuration: The wings are mounted on top of the fuselage. This keeps the four engines high off the ground, preventing them from sucking up rocks or debris on unpaved runways.The "Anhedral" Droop: To improve stability in SimplePlanes, give the wings a slight downward angle (anhedral). This makes the plane feel "snappier" when banking into tight valleys.T-Tail Design: Place the horizontal stabilizers at the top of the tail fin. Use the Part Scale tool to make the elevators extra large for low-speed pitch control.3. Fictional History: The "Alpine Express"The 574-574 earned its fame in the Alps and the Andes. Because it has four engines, it is certified to fly into airports where a single engine failure on a twin-engine jet would be catastrophic. If one engine fails during a steep mountain climb, the 574-574 still has 75% of its power left, whereas other regional jets lose 50%. Pilots call it the "Mountain Goat" because it can land on a "postage stamp" and climb out like a rocket.