Q) What is the average age of a commercial aircraft?
A) The lifespan of an aircraft is not truly measured in time. Instead, it is counted based on pressurization cycles. Each time an aircraft is pressurized during a flight, its fuselage is subjected to stress. The “lifespan” of an aircraft is reached when there are certain metal fatigues and cracks which may pose danger. The “service life of 20 years” encompasses roughly 51,000 flight hours and 75,000 pressurization cycles for most aircraft. If an aircraft is used on long haul routes it experiences relatively fewer pressurization cycles in its life and can remain airworthy far beyond 20 years.
Q) Why do we need to stay hydrated on a flight?
A) Air travel can make us shed up to 1.5 litres of water from the body during an average 3-hour flight leaving us dehydrated. So keep sipping!