Is flying safe?
Yes — and not because nothing ever goes wrong. It is safe because every part that matters has a second one behind it, and because the whole aircraft is tested past breaking before anyone sells a ticket for a seat in it.
A wing is bent upward in a rig until it snaps. To be certified it has to survive half again more load than the worst flight anyone can construct.
An airliner is certified to take off, climb and land on one engine. Losing one is a diversion and a long delay, not a falling aeroplane.
Pilots rehearse failures in a simulator every six months, which is why the rare real one is something both of them have already done dozens of times.
What the numbers actually say
Commercial aviation is the safest form of travel that has ever existed, and the gap is not close. A passenger boarding a scheduled flight on a major airline is taking on a risk so small that the usual comparisons — car journeys, staircases, swimming — all come out worse, usually by a wide margin.
What matters more than the number is why the number keeps falling. Every accident in commercial aviation is investigated in public, the findings are published, and the fixes become mandatory for everyone flying that type anywhere in the world. An industry that treats every failure as everybody's homework gets safer in a way that an industry keeping its lessons private never does.
That is also the honest answer to "but what about the one I read about". Aviation accidents are rare enough to be worldwide news, which is exactly what makes them feel common. Nobody publishes a bulletin about the hundred thousand flights that landed normally that day.
Built so that one failure is never enough
The design principle behind every airliner is that no single thing breaking should be able to end the flight. It shows up everywhere once you know to look for it.
Two engines, either of which is enough
Twin-engine airliners are certified to complete a take-off, climb away and land using one engine alone. Long over-water routes are flown under rules that require the aircraft to stay within a set flying time of a runway on one engine for the entire crossing.
Three or four ways to fly the controls
Hydraulics come in independent systems fed by separate pumps, routed through different parts of the airframe so one leak cannot drain another. Flight computers are multiplied too, and they vote.
Electrics from four sources
Generators on each engine, a generator on the auxiliary power unit, batteries, and on many types a small turbine that drops into the airflow and makes power from the aircraft's own speed.
Two pilots who have done it before
Both are qualified to land the aeroplane alone, both are checked in a simulator twice a year, and every abnormal procedure is a checklist read aloud by one and actioned by the other rather than a decision made under pressure.
The things people brace for, and what they really are
- ✓Lightning strikes airliners regularly. The aircraft is a metal shell with bonded joints and static wicks on the trailing edges, so the charge travels through the skin and leaves. It is checked on the ground afterwards and it is usually a scorch mark.
- ✓The wing flexing is the wing doing its job. A rigid wing would transmit every gust into the fuselage and fatigue itself apart. Flex is designed in, and a 787 wing tip can move several metres in a test rig without complaint.
- ✓Air pockets are not holes in the sky — there is no such thing. What you feel is the aircraft moving through air that is rising or sinking, and the height lost in a normal bump is measured in feet rather than the hundreds of feet it feels like.
- ✓Small regional jets are certified against the same rules as the big ones. They feel bumpier because a lighter aircraft responds more to the same gust, not because they are built to a lower standard.
- ✓An old aircraft is not a worn-out one. Airframes are maintained on cycle-based schedules that replace and inspect parts on a calendar, so a twenty-year-old jet in service is one that has kept passing its checks.
Flight safety questions
What happens if both engines fail?
An airliner with no engines is a glider with a poor glide ratio, not a falling object. From cruising altitude it can cover well over a hundred kilometres, which is why the procedure is to restart, and failing that, to reach a runway. It is rare enough that the handful of times it has happened are individually famous.
Can turbulence break a plane?
No large modern airliner has been lost to turbulence. Certification loads sit far above anything the atmosphere produces, and the injuries that do happen in severe turbulence happen to people and objects that were not secured, not to the aircraft.
Is flying safer than driving?
Yes, by a very large margin, whichever way you measure it — per journey, per hour or per kilometre. The most dangerous part of most flights is the drive to the airport, which is a cliché precisely because it keeps being true.
Are some airlines less safe than others?
Safety oversight varies by country more than by airline, and the major carriers flying international routes all operate under regimes that audit each other. FlyBud shows the aircraft type, its age and its record so you can see what you are actually boarding rather than guessing from a logo.
Why do the engines get quieter after take-off?
Because the pilots reduce power on purpose. Full thrust is only needed to get off the ground; once the aircraft is climbing safely they pull it back to save the engines and the neighbourhood. The change in sound is a scheduled part of every departure.
The answers, in your pocket.
Good things to know sits inside every flight in FlyBud — eleven questions, each answered by what the machine actually does.