An airplane emergency landing is an unscheduled landing that a flight crew makes in response to a situation that threatens the safety of the aircraft, passengers, or crew. Aviation safety authority SKYbrary defines it as “a landing of an aircraft in a state of emergency” that does not necessarily occur on a runway — it can take place in fields, on water surfaces, or even on roadways. Pilots, airlines, and aviation regulators across the world use the term as an umbrella to describe several distinct event types, each governed by its own protocols and involving different levels of urgency.
Emergency landings happen in every category of aviation — commercial, military, and general aviation — and they can be triggered by anything from a failing engine to a medical crisis on board. The Federal Aviation Administration (FAA) requires pilots to declare an emergency through specific radio calls — either “MAYDAY” for a life-threatening distress condition or “PAN-PAN” for an urgent but not immediately deadly situation — before the standard emergency response infrastructure swings into action. Once declared, the flight receives absolute priority over all other traffic, rescue and firefighting services (RFFS) are deployed to their positions, and departures at the destination aerodrome may be halted.
What Is An Airplane Emergency Landing And Why It Matters
An emergency landing is fundamentally different from a crash. AN Aviation explains that it is “a controlled maneuver where an aircraft returns to the ground or a surface (water) in response to a crisis that threatens the safety of the flight.” The objective is to bring the aircraft down with maximum control and minimum energy dissipation. The flight crew makes a deliberate, proactive decision to land early rather than continue the scheduled route.
The distinction matters because it shapes public understanding and, more importantly, policy. The FAA’s Airplane Flying Handbook defines a crash landing specifically as one “in which an aircraft is damaged beyond repair.” An emergency landing where the aircraft remains structurally intact should not carry that label. Recognizing the difference helps investigators apply the right category to each event, which in turn determines the type of safety study triggered and the recommendations that follow.
Statistically, air travel remains one of the safest modes of transportation. Airliners frequently make emergency landings, and the overwhelming majority of them are uneventful. Pilots train for these scenarios extensively, airlines have detailed contingency plans in place, and aircraft are engineered with redundant systems designed to keep the crew in control during an emergency.
The MAYDAY And PAN-PAN Calls
Before any emergency landing takes place, the flight crew must communicate the situation to air traffic control (ATC). Aviation uses two internationally standardized distress signals for this purpose, each corresponding to a different level of urgency.
MAYDAY — derived from the French m’aidez, meaning “help me” — is the global signal for a distress condition. Per FAA guidance, a pilot repeats it three times consecutively. It indicates an immediate threat to life or the continued viability of the aircraft — such as an engine fire, total power loss, or structural failure. A MAYDAY call commands radio silence on the frequency in use and gives the flight absolute priority over all other traffic.
PAN-PAN — an acronym commonly expanded as “possible assistance needed” — is the urgency signal. Simple Flying notes that it covers situations where “the flight is safe for the moment but requires a change in plans” — such as a medical issue in the cabin, a non-critical navigation system failure, or a fuel imbalance that calls for a diversion. PAN-PAN alerts ground crews that a precautionary landing is likely, but it does not trigger the full-scale emergency response that MAYDAY does.
Five Types of Airplane Emergency Landings
Aviation authorities recognize several distinct types of emergency landings. SKYbrary classifies them as follows: forced landing, precautionary landing, ditching, belly landing, and crash landing. Each type carries a different fatality risk, demands different pilot decision-making, and may or may not involve a formal emergency declaration.
Forced Landing
A forced landing occurs when the aircraft must land immediately, regardless of the terrain below. SKYbrary defines it as “a situation where an aircraft unavoidably needs to land, usually regardless of terrain.” The most common trigger is engine failure — either a single-engine failure in a single-engine aircraft or total power loss across all engines. Fuel exhaustion is another frequent cause, as is extensive structural damage.
The AOPA notes that the fatality rate for forced landings is approximately 10 percent — more than 1,600 times the rate for precautionary landings. This makes prompt recognition critical: a pilot who identifies a deteriorating situation early and transitions from a forced landing scenario to a precautionary one dramatically improves the odds for everyone on board.
During a forced landing with no engine power, a fixed-wing aircraft glides while a helicopter autorotates — trading altitude for airspeed to maintain control. AN Aviation explains that when selecting an off-airport landing site, pilots apply “The Five S’s”: Surface, Size, Shape, Slope, and Surroundings. They look for flat, firm ground free of obstacles like power lines and trees. The aircraft’s glide ratio becomes the most critical variable: an aircraft with a lift-to-drag ratio of 10:1 can cover 10,000 feet of horizontal distance for every 1,000 feet of altitude lost.
Precautionary Landing
A precautionary landing is made when further flight is possible but inadvisable. SKYbrary defines it as “a situation where further flight is possible but inadvisable, i.e. in the judgement of flight crew, a hazard exists with continued flight.” Common triggers include navigation system degradation, gradual engine performance loss, deteriorating weather, or fuel shortage that has not yet become critical.
The key distinction from a forced landing is that the pilot still has options. AOPA data shows the fatality rate for precautionary landings is just 0.06 percent — far lower than for forced landings. Pilots who recognize a developing problem and elect to land early save lives. Not all precautionary landings are classified as emergency landings; some occur without a formal emergency declaration and are handled as local standby procedures rather than full emergency activations.
Precautionary landings are most commonly made at an airport. In some cases, landing in a field is safer than attempting to reach an airport, especially if the hazard is likely to worsen with time. Simple Flying notes that depending on the hazard severity, either a full emergency or a local standby procedure may be activated at the receiving aerodrome.
Ditching: Emergency Landing On Water
Ditching is defined as a forced or precautionary landing on water. Simple Flying clarifies that ditching applies only to land planes — water landings by seaplanes or amphibious aircraft, which are designed for such operations, are not classified as ditching. A true ditching involves a land-based aircraft touching down on a water surface under emergency conditions.
AOPA data puts the fatality rate for ditchings at approximately 20 percent — the highest among the main emergency landing types. Outcomes depend heavily on sea conditions, wind, water currents, aircraft type, and crew skill. Passengers must don life vests before the aircraft touches down, and the evacuation window is narrow because a ditched aircraft may sink within minutes if not specifically designed for extended water flotation.
The FAA guidance on ditching identifies three primary factors that determine success: sea conditions and wind, the type of aircraft, and the skill and technique of the pilot. For aircraft landing on solid surfaces, pilots generally extend the landing gear to absorb impact energy; for water landings, retracting the gear is usually recommended to achieve a smoother touchdown on the aft fuselage.
Belly Landing
A belly landing, also known as a gear-up landing, occurs when an aircraft touches down without its landing gear fully extended. It is caused either by mechanical failure — hydraulic or electrical faults preventing gear extension or locking — or, in rarer cases, by pilot error, specifically forgetting to lower the gear before touchdown.
Belly landings carry the risk of fire, fuselage damage, and loss of directional control. Flight Safety Australia, citing data from Australia’s ATSB covering 2003–2023, found 321 gear-up landings across both general and commercial aviation — more than one per month. Of those, 314 involved no injuries, 7 involved minor injuries, and none resulted in serious or fatal injuries. This data shows that while the event looks alarming, a carefully executed belly landing on a prepared runway with rescue services standing by is statistically survivable.
Key features that affect belly landing safety include:
- Fuselage design: Aircraft with reinforced underside structures better absorb the impact.
- Fuel state: Dumping or burning off excess fuel before landing reduces fire risk.
- Emergency services: Ground rescue and fire crews must be in position before touchdown.
- Runway surface: A prepared runway is far safer than off-airport terrain.
- Pilot control: Maintaining wings-level attitude and correct approach speed is essential.
Simple Flying’s review of notable gear-up landings highlights the 2011 case of LOT Polish Airlines Flight 16, a Boeing 767, which landed at Warsaw without any gear deployed after a hydraulic failure prevented extension. The captain, a veteran with 20 years of experience on the 767, successfully completed the landing with no injuries to anyone on board.
Crash Landing
A crash landing is the most severe category. This is defined as a landing in which the aircraft sustains damage beyond repair. Crash landings may result from a hard landing after gear collapse, veering off a runway at speed, or a controlled impact with terrain when no usable landing area is available.
Not every emergency landing is a crash landing. If the aircraft remains intact or sustains only minor damage, calling the event a crash landing is technically inaccurate. The label is reserved for cases involving significant structural failure. Historical examples include Southern Airways Flight 242, which on April 4, 1977 lost both engines to hailstorm ingestion and made a forced landing on a highway near New Hope, Georgia. The aircraft struck the ground hard, its fuel ignited, and the majority of passengers and several people on the ground were killed.
Comparing Emergency Landing Events
Aviation safety researchers track emergency landing incidents to identify systemic patterns and guide regulatory improvements. Several trends emerge from a comparison of major events.
Hydraulic failures appear in a significant proportion of emergency landings. The Delta A350 diversion to Haneda and the LOT Polish Airlines Boeing 767 belly landing in Warsaw both trace to hydraulic system faults. SKYbrary notes that hydraulic systems drive flight controls, landing gear, flaps, and braking — a cascade failure in this system can render an aircraft nearly impossible to land normally.
Bird strikes remain a persistent risk, particularly at low altitude near airports. The US Airways Flight 1549 incident — caused by dual bird ingestion — led the NTSB to call for improved engine testing at low-speed bird-strike conditions and expanded wildlife management programs at airports.
Fuel management failures account for a category of otherwise preventable incidents. Both Air Transat Flight 236 (fuel leak from improper maintenance) and historical cases like the 1983 Gimli Glider (Air Canada Boeing 767 that ran out of fuel due to a unit conversion error) show that mechanical and procedural breakdowns in fuel management can force powerless glides. The industry response to TS236 included tighter maintenance inspection protocols and more rigorous in-flight fuel monitoring procedures.
Fire alerts — even false ones — trigger the full emergency response. The Qantas Flight QF141 Boeing 737-800 incident, in which a potential cargo hold fire alert prompted a Mayday call and diversion to Auckland International Airport (AKL), illustrates this point.
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