When the subject is flight safety, general aviation tends to talk about airplanes and extend the conclusion to the helicopter. The data say that is a mistake.
A survey published by CNN Brasil in 2023, using CENIPA data from 2012 onward, showed the size of the difference:
| Brazilian civil aviation | Accidents | Deaths | Accidents with fatalities |
|---|---|---|---|
| Helicopters | 212 | 130 | 24% |
| General aviation airplanes | 1,338 | 544 | 20% |
Airplanes crash more often, because there are far more airplanes flying. But when a helicopter crashes, more people die per accident. Rotary-wing lethality is higher — and the accident pattern is different.
The three accidents that dominate
In the United States, the USHST (United States Helicopter Safety Team, which brings together the FAA, manufacturers and operators) has tracked the causes of fatal helicopter accidents for more than a decade. Three categories sit at the top of the list, year after year:
- Loss of control in flight (LOC-I) — the helicopter is unstable by nature; what is a scare in an airplane becomes vortex ring state, loss of tail rotor effectiveness or dynamic rollover in seconds on a rotary wing.
- Collision with an object during low-altitude operations — wires, towers, antennas and trees. The helicopter flies where the airplane does not, and the wiring does not appear on the chart. A good share of these accidents happen with reduced visibility, when the wire stops being visible before it stops existing.
- Unintended flight into IMC (UIMC) — the pilot enters the cloud by accident, loses visual references and becomes spatially disoriented. It is the "I'll take a look and come back" accident, and it is almost always fatal.
In 2024 the American industry closed the year with 13 fatal accidents and a rate of 0.44 per 100,000 hours — the lowest in 25 years. Even so, the three categories above kept leading. And one figure is uncomfortable: the commercial operators' rate (Part 135, the equivalent of our RBAC 135) was higher than that of general aviation (Part 91): 0.46 versus 0.34. Flying professionally does not protect you by itself. Flying with method does.
Why more flight hours don't solve it
The three accidents have something in common: they are not failures of skill, they are failures of decision — made before the flight or in the first seconds of the problem.
- UIMC starts at the briefing: the destination METAR was marginal, the TAF was deteriorating, and the decision to go was made anyway, or was not made at all — it was assumed.
- The wire strike starts in route planning and in the approach profile to the non-approved site, not in the skill of avoiding it.
- LOC-I starts with the load, the wind, the weight on approach with little reserve power — variables the pilot knows how to calculate and, without a tool, doesn't.
That is why the rotary-wing safety literature talks so much about threat management and so little about maneuvers. It is the same reasoning as the TEM and CRM the airlines use: the threat is identified before it becomes an error, and the error is contained before it becomes an undesired state.
What changes in the routine of those who operate helicopters
1. Pre-flight risk assessment that treats the helicopter as a helicopter. A generic FRAT asks about ceiling and visibility as if the destination were an airport. The helicopter lands on a helipad, a farm, a platform, a town square. A FRAT that works has to ask about the site: is it approved? Is there a known obstacle? Are there wires? What is the escape route? And it has to weigh UIMC as the highest-consequence threat, not as one line among others.
2. Weather consulted, recorded and compared. The METAR and TAF for the origin and destination are part of the briefing, and the decision to fly is tied to what was consulted. If conditions deteriorate en route, the rule of "turn back before the cloud" has to have been decided on the ground, with numbers: minimum ceiling, minimum visibility, decision point.
3. Performance calculated, not estimated. Weight and balance, power available versus power required in the hover, margin for landing at the site's altitude and the day's temperature. The calculation exists and fits on a phone; what is missing, in most operations, is the habit of doing it on every flight.
4. A record of what happened. A flight in which the decision to return was made is a safety event, and a landing with a wire spotted at the last minute is a hazard report. The SMS (SGSO) that comes out of the filing cabinet is what turns those reports into trends — and trends are what change a procedure before the accident, not after.
5. Flight data. The USHST recommends flight data monitoring (HFDM) as a complement to the safety management system. It doesn't need to be a certified recorder: the digital logbook itself, ADS-B and the record of expenses and legs already tell the story of where, when and how the aircraft flew. That is how the operator finds out that landing at a given farm always happens late in the afternoon, with visibility falling.
Where Alis comes in
Alis's Flight Kit brings the FRAT and the PAVE briefing to the pilot's phone, with METAR, TAF and NOTAM consulted within the briefing itself and the result of the assessment recorded on the flight — green, yellow or red, with the decision documented. The SMS module receives the hazard report from whoever was on board and turns it into an indicator. And the digital logbook, accepted by ANAC, is what makes flight time, landing site and crew become data the operation can look at as a whole.
Do you operate helicopters and want a risk assessment that speaks your language? Talk to Alis.
This article is informational. The figures cited come from public surveys by CENIPA (as published by CNN Brasil, 2023) and USHST (2024 data, published in 2025) and may be updated by the sources. No tool replaces the judgment of the pilot in command, adequate training and compliance with applicable regulations.