CPL Aircraft General Knowledge · Practice

A turbocharged aircraft maintains sea-level MAP (29.5 inHg) up to its critical altitude of 20,000 ft. At 20,000 ft, a normally-aspirated aircraft shows severely reduced engine performance. Why does the turbocharged aircraft maintain full performance to its critical altitude?

• A.The turbocharger uses exhaust energy to compress intake air
• B.The turbocharger exchanges altitude capability for lower sea-level performance
• C.The turbocharged engine uses a different fuel type that burns better at altitude
• D.The turbocharged aircraft has a pressurised fuel system that maintains mixture quality at altitude