Explainers
The bumps, beeps and bongs, explained.
Most of what feels alarming on a flight is routine. Here's what's actually going on, in plain English, with sources.
Start here
Turbulence: uncomfortable, but not dangerous to the airplane
Why the bumps happen, why the wings won't come off, and the one simple thing that keeps you safe.
- That noise! A guide to normal sounds on a flightThunks, whirs, chimes and the famous "barking dog" — what you're hearing, from gate to gate.
- Go-arounds: why pilots sometimes abort a landing (and why that's good)The sudden engine roar near the ground is a normal, practiced maneuver — a safety choice, not an emergency.
- Holding patterns: why you're flying in circlesRacetrack loops near your destination are a routine traffic tool, and airliners carry fuel planned for exactly this.
- What if an engine fails?Airliners are designed to keep flying, climb and land on one engine — and pilots practise exactly that.
- Lightning strikes on airplanesLightning strikes on airliners are relatively common, and planes are built for them. Here's why you'll probably never notice.
More explainers
- Bird strikes: common, planned for, and usually uneventfulBirds and airplanes meet more often than you'd think. Here's why engines and airports are built for it.
- Why they spray your plane in winter (de-icing, explained)The orange or green spray before a winter departure is a safety rule doing its job. Here's what's happening.
- Flying when there are thunderstorms aroundWhy pilots steer around storms, why that can mean delays or a longer route, and what you'll feel on board.
- That sudden little bump on approach: wake turbulenceEvery airplane leaves a swirl of air behind it. Here's why controllers space airplanes apart, and why a brief jolt is normal.
- Fear of flying: practical things that helpYou're far from alone. Simple, evidence-based steps from the NHS, plus tools on this site you can use before and...
- Can turbulence make a plane crash?The short answer for airliners, the evidence behind it, and the one thing that actually matters for your safety in rough air.
- What does "moderate turbulence" actually mean?Light, moderate, severe: the official FAA scale pilots use, in plain English, and what each level feels like from your seat.
- Why do planes suddenly drop? "Air pockets", explainedThat stomach-lurching feeling is real, but the drop is usually much smaller than it feels. Here's what's going on.
- Flying over the ocean on two engines: how ETOPS worksLong flights over water on a twin-engine jet follow a special set of FAA rules for planning, fuel and maintenance....
- What if the pilot gets sick during the flight?Airliners always carry at least two qualified pilots, and the rules about who stays at the controls are strict....
- What is a ground stop, and should it worry me?When the FAA holds flights on the ground, it's managing traffic and weather, not reacting to a dangerous airplane....
- How do planes land in fog?Instrument landing systems guide the airplane precisely to the runway, and strict rules say what the pilots must see...
- Choosing a seat when you're a nervous flyerThere's no "safe seat" ranking, and we won't invent one. But some seats can feel calmer, and a few seat rules are...
- Why your ears pop on a plane, and what helpsHow cabin pressure works, why your ears feel blocked on climb and descent, and the self-care steps Mayo Clinic recommends.
- How to calm down on a plane: a step-by-step guideWhat to do in the moment when anxiety or panic hits mid-flight, using the NHS's self-help advice, plus how to...
- Is it safe to fly in the rain?Rain is ordinary weather for airliners. Engines are tested against it, windshields are built to stay clear in it,...
- Is it safe to fly in snow?Snow slows airports down, and that's the point. Wings must be clean before takeoff, runways are cleared and reported...
- Is it safe to fly in strong wind?Windy days mean bumpier approaches and sometimes a plane that seems to land sideways. Airliners are tested in...
- Is it normal for airplane wings to flex and bounce?Yes. Wings are designed to bend. The rules require them to carry far more than the biggest loads expected in...
- Why do planes fly so high?Jets cruise miles above the ground mainly because the cold air up there makes their engines more efficient. Inside,...
- What do pilots do during turbulence?Long before the seat belt sign comes on, pilots and dispatchers are planning around bumps. When turbulence arrives,...
- Why does the seat belt sign stay on so long?The sign is required for taxi, takeoff and landing, and pilots can switch it on whenever they judge it necessary,...
- How do pilots know where turbulence is?Pilots fly with turbulence forecasts, official weather advisories and live reports from other aircraft. Forecasts...
- Why was my flight delayed for "weather" when it's sunny here?The weather that matters may be at your destination or along the route. When storms or low cloud cut how many...
- What do air traffic controllers do for your flight?From the gate to the runway at the other end, your flight is handed between teams of controllers whose job is to...
- How often are airliners inspected and maintained?There isn't one magic number, and that's by design. Every US airline must run an FAA-accepted inspection and...
- How do airline pilots train, and how often are they checked?Airline pilots don't just learn once. US rules require type-specific training before they fly an airliner, recurrent...
- Are small regional planes safe?Regional flights can feel different: smaller cabins, propellers, more noticeable bumps. But in the US, scheduled...
- What happens if someone gets sick on a plane?It's a common worry, especially for people with health conditions or anxiety about panic attacks. US airliners must...
- Flying with anxiety medication: what to knowIf you take medicine for anxiety, or are wondering whether to, this is general information, not medical advice....
- First flight as an adult? A calm, step-by-step guideFlying for the first time as a grown-up can feel like everyone else knows the rules. Here's what actually happens,...
- Red-eye flights when you're anxious: how to rest (or at least relax)Overnight flights add tiredness to nerves, and lying awake in a dark cabin can make worries louder. Here are calm,...
- Flying with a child who's scared of flyingChildren pick up on worry, and a first flight can be a lot. Here's what the NHS suggests for helping an anxious...
- Scared to fly after a crash in the news?When a plane crash is all over the news, it's natural to feel shaken, especially if you have a flight coming up....
- Why does the plane tilt so much after takeoff?That moment when the wing dips and you're looking at the ground through the window can feel dramatic. Airliners turn...
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Just how safe is flying?
Looking at the whole industry over many years, serious accidents are very rare, and they keep getting rarer. MIT researchers found the worldwide death rate per passenger boarding has roughly halved every decade. For 2018–2022 they counted about one death per 13.7 million boardings, averaged across all airlines and all boardings worldwide.1 In 2025, IATA counted 8 fatal accidents across about 38.7 million commercial flights worldwide.2
These are industry-wide averages across tens of millions of flights a year. They aren't odds or a prediction for any particular flight, airline or aircraft, and SafelyAboard doesn't produce those. What they do show is how much the whole system has learned.
Sources: MIT News, "Study: Flying keeps getting safer" (2024), IATA 2025 Safety Report press release
Is turbulence dangerous?
Not to the airplane. Airliner structures must carry their maximum expected loads with a 1.5 factor of safety on top.3 The NTSB's study of US airline turbulence accidents found most involved serious injuries inside the cabin but no damage to the aircraft.1 The fix is simple: keep your seat belt on whenever you're seated.2 Read the full explainer: Can turbulence make a plane crash?
Sources: NTSB Safety Research Report SS-21-01, FAA, Turbulence: Staying Safe, 14 CFR § 25.303, Factor of safety
Why do the wings bend and flex?
They're meant to. Wings are built to flex, a bit like a car's suspension soaking up bumps. US certification rules require an airliner's structure to carry its maximum expected loads without harmful permanent deformation, and say that any bending up to those loads must not interfere with safe operation.1 On long-range jets you may see the wingtips rise noticeably in flight. That's normal and expected.
Was that hard landing a bad landing?
Not necessarily. FAA guidance says a firm touchdown at the target point, followed by spoilers, reverse thrust and braking, gives the shortest landing roll, particularly on wet or contaminated runways.1 Flight Safety Foundation guidance for wet runways also calls for a firm touchdown.2 So a firm landing can be exactly the right technique; a feather-light one isn't the goal on every runway.
Sources: FAA Advisory Circular 91-79A, Mitigating the Risks of a Runway Overrun Upon Landing (2014), Flight Safety Foundation, ALAR Briefing Note 8.5: Wet or Contaminated Runways
What happens if the cabin loses pressure?
Oxygen masks drop from above your seat. Put yours on first, then help others. The pilots will descend to an altitude where you can breathe normally, usually within minutes. Masks provide oxygen even if the bag doesn't visibly inflate. In the Alaska Airlines 1282 door-plug event, the crew followed exactly these procedures and landed safely. Read the explainer.
Why do I have to put my phone in airplane mode?
It's a precaution against interference with radio and navigation equipment, and it's the rule. A single phone is extremely unlikely to cause a problem, but many transmitting devices searching for a cell signal can create noise in pilots' headsets. Airlines decide which devices can be used and when, following FAA guidance.
Source: FAA Advisory Circular 91.21-1D — Use of Portable Electronic Devices Aboard Aircraft
Is an older plane less safe?
Age alone tells you very little. US airlines maintain their aircraft under FAA rules, and older airplanes face extra scrutiny: once an airliner has been in service for about 15 years, the airline must have the FAA complete an aging-airplane inspection and records review, repeated at intervals of no more than 7 years. The airline has to show that age-sensitive parts and components have been maintained adequately and on time.1 Curious how old your plane is? Try our tail number lookup.
Source: 14 CFR § 121.1105, Aging airplane inspections and records reviews
Why should I listen to the safety briefing every time?
Because exits, seat belts and evacuation slides differ between aircraft, and knowing where your nearest exit is (it may be behind you) saves precious seconds. In real evacuations such as JAL 516 at Haneda and Delta Connection 4819 at Toronto, everyone got out — helped by crews' training and passengers following instructions. Leave bags behind if you ever need to evacuate.
Sources: TSB Canada preliminary report A25O0021, Japan Airlines JL516 press memo (PDF)