Aircraft by Type

Engine type is the biggest factor. Piston engines (like most Cessna 172s and other GA aircraft) produce a distinctive low-frequency drone. Turboprops add a propeller whine. Jets produce a continuous roar that rises sharply under thrust.

Year of manufacture matters too — older piston aircraft (pre-1980s) tend to be louder due to less sound insulation and older engine designs. Modern aircraft benefit from improved engine technology and stricter noise regulations.

Other factors:

• –Engine power & RPM — climb produces significantly more noise than cruise; twin-engine aircraft are louder than singles
• –Propeller design — older fixed-pitch props vs. modern variable-pitch constant-speed props sound noticeably different; larger slower props are lower frequency
• –Altitude — aircraft at lower AGL are louder; approach and initial climb are the loudest phases of flight