Final answer:
The appropriate cruising altitudes and flight levels for aircraft in level cruising flight depend on the type of flight being conducted - VFR, IFR, or CVFR.
Step-by-step explanation:
The subject is Physics and the grade is High School.
When an aircraft is operated in level cruising flight, the appropriate cruising altitudes and flight levels depend on the type of flight being conducted.
a) For Visual Flight Rules (VFR) flights, aircraft are generally operated at altitudes above 3,000 feet above ground level, staying clear of altitudes designated for IFR flights.
b) For Instrument Flight Rules (IFR) flights, the appropriate cruising altitudes and flight levels are determined by air traffic control based on factors like direction of flight, aircraft speed, and airway system.
c) Controlled Visual Flight Rules (CVFR) flights also follow the same rules as VFR flights in terms of cruising altitudes and flight levels.