Which aircraft has the highest true airspeed (TAS) among the small aircraft listed?

Which aircraft has the highest true airspeed (TAS) among the small aircraft listed?

• A. Cessna 421 Golden Eagle
• B. Piper Navajo
• C. Pilatus Eagle
• D. Beech King Air B350

Answer: (D)

High cruise speed comes from engines and propeller efficiency at altitude. The Beech King Air B350 uses two turboprop engines, which deliver strong, efficient power at high altitudes and pair with large, efficient propellers to sustain higher true airspeed during cruise. Piston-twin rivals, like the Cessna 421 Golden Eagle and the Piper Navajo, are limited by piston engine power and the efficiency of smaller propellers, so their typical cruise true airspeeds are lower. The Pilatus Eagle, while capable, generally doesn’t match the turboprop combination and cruise efficiency of the King Air. So, among the listed aircraft, the King Air B350 achieves the highest true airspeed.

High cruise speed comes from engines and propeller efficiency at altitude. The Beech King Air B350 uses two turboprop engines, which deliver strong, efficient power at high altitudes and pair with large, efficient propellers to sustain higher true airspeed during cruise. Piston-twin rivals, like the Cessna 421 Golden Eagle and the Piper Navajo, are limited by piston engine power and the efficiency of smaller propellers, so their typical cruise true airspeeds are lower. The Pilatus Eagle, while capable, generally doesn’t match the turboprop combination and cruise efficiency of the King Air. So, among the listed aircraft, the King Air B350 achieves the highest true airspeed.