The cruising altitude of an aircraft is determined by the structural capability and operating conditions. The service ceiling of an aircraft defines how high it can fly under standard loads.
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The definition of the service ceiling is the height above sea level at which an aircraft with normal-rated load is unable to climb faster than 100 feet per minute under standard air conditions.
Within the airplane flying handbook, the Federal Aviation Authority, FAA, defines the service ceiling as “the maximum density altitude where the best rate of climb airspeed will produce a climb of 100 feet per minute at maximum weight while in a clean configuration with maximum continuous power.”
Boeing widebodiesLufthansa previously bragged that its 747-400 could reach the highest altitude in its fleet, with a maximum service ceiling of 44,947 ft (13,610 m). The German flag carrier also flies the modern 747-8, which has a service ceiling of 43,100 ft (13,137 m).
The maximum cruising altitude for the new generation of 737 planes is 41,000 feet. At this altitude, 737 jets can still have great fuel efficiency and safety standards thanks to avoiding powerful winds and bad weather. However, its optimal altitude is around 37,000 feet.
The static ceiling is simply the point above which the aircraft won't be able to produce enough thrust and lift to sustain that altitude. You'll start losing velocity, and as you do so, also start losing altitude. Nothing fails outright. You just don't have enough energy to climb or even stay level.
In aviation weather observation, a description or explanation of the manner in which the height of the ceiling is determined. The different types of ceilings according to this classification are aircraft ceiling, balloon ceiling, estimated ceiling, indefinite ceiling, measured ceiling, and precipitation ceiling.
No, commercial planes do not fly over Everest due to the dangerous weather surrounding the mountain. However, airlines such as Yeti Airlines and Buddha Air offer a view of Mount Everest on their flights.