Certified Transport Registered Nurse Certification Practice Exam

What is the cruising altitude for most commercial air flights?

1. 3000 ft

2. 4000 ft

3. 5000 ft

4. 6000 ft

The correct answer is: 4000 ft

The cruising altitude for most commercial air flights typically ranges from about 30,000 feet to 40,000 feet. This altitude allows aircraft to operate efficiently, avoiding turbulent weather and minimizing fuel consumption. Altitudes in the range of thousands of feet listed in the choices provided are significantly lower and not characteristic of typical cruising altitudes. The option identified does not align with the established standard for most commercial aviation, which clearly places cruising altitudes much higher than those presented.