We answer more questions from our passengers on “Ask the pilot”.
In some aircraft, noise reduction is more significant and depends on the type of engine/reactor. In any case, it means that the pilots reduced the power of the engines once they reached cruising speed. Just like us, on land, when we shift down to overtake or up to glide smoothly on traffic clear highway. They don’t need the same power in all phases of the flight.
Besides, aircraft engine manufacturers have been producing engines that are increasingly silent to comply with the increasingly demanding laws on noise, particularly at take-offs and landings.
So that the crew can have a total view of the wings and engines of the plane and notice if something abnormal occurs in the most critical phases of the flight.
*Photo by SATA Azores Airlines’ Captain Vitor Lopes