Anyone who reads safety reports — the CENIPA overviews in Brazil, the NTSB and AOPA data in the United States, the ICAO international taxonomies — finds a pattern that has repeated for decades, in every geography: general aviation concentrates civil aviation's fatalities, and two categories dominate the list: LOC-I and CFIT.
They are not report acronyms meant to stay in reports. Each one describes an accident mechanism with its own anatomy, scenarios that repeat — and known defenses. Both are worth breaking down.
LOC-I — loss of control in flight
Loss of Control In-flight is the aircraft leaving the flight envelope — stall, spin, abnormal attitude — without recovery in time. It is consistently the category that kills the most in aviation, and it has a cruel characteristic: when it happens, lethality is extremely high. There is usually no second chance.
The classic scenarios repeat in the reports:
The low-altitude stall. The tight base-to-final turn, power and angle compensating for overshooting the turn point, the airspeed indicator forgotten — and the stall happening exactly where there is no altitude to recover. It is the most studied accident in general aviation, and it keeps happening.
The takeoff with performance at the limit. Weight, density altitude, a short runway — and the temptation to "pull" the aircraft that doesn't want to fly yet.
The upset from an external factor. Wake turbulence, windshear, formation flying — the abnormal attitude the pilot never saw in training and meets, for the first time, for real.
What the three have in common: they are not machine failures. They are the combination of poorly managed energy, surprise and an instinctive response that tends to be exactly the wrong one — pulling when the answer was to ease off. That is why the defense against LOC-I is not a piece of equipment: it is specific prevention and recovery training, before you need it.
CFIT — controlled flight into terrain
Controlled Flight Into Terrain is the most counterintuitive accident in aviation: the aircraft is intact, the pilot is in command, the systems work — and the flight still ends against terrain or an obstacle. Nobody lost control; what was lost was awareness of where the aircraft was in relation to what does not forgive.
The recurring scenarios:
VFR into IMC. The visual flight that insists on weather that has closed in — statistically one of the deadliest scenarios in all of general aviation. The terrain disappears, the reference disappears, and the mountain stays where it is.
The non-precision approach at night. Early descents, minimum altitudes violated "just a little", the runway light confused among the city lights.
The airport without a procedure, in the middle of the terrain. Operations to runways outside the main network — farms, mountain airfields — where flight preparation is the only defense, because there is no published procedure protecting the arrival.
The defense against CFIT is less glamorous than that against LOC-I and just as well known: preparation and discipline. An airport briefing that looks at terrain and obstacles, a pre-flight risk assessment that treats marginal weather and a night arrival as the threats they are, personal minimums set with a cool head — and respected with a hot one.
Why general aviation — and not the airlines?
The uncomfortable question has a structural answer. Commercial aviation attacked these two categories with overlapping layers: multi-crew, recurrent simulator training, evidence-based methodology, terrain warning equipment, SOPs and stabilized approach criteria with clear go-around triggers.
General aviation operates, for the most part, without any of those layers: one pilot, training at the regulatory minimum, no structured recurrence. The result shows in the statistics — the training trends of the two worlds diverged, and the accident curve diverged with them.
The good news is that the defenses don't depend on becoming an airline: structured flight preparation, honest risk assessment, recurrent training with real scenarios and UPRT can be imported into any operation — and that is exactly the thesis behind Alis recurrent training.
The role of your own operation's data
International statistics persuade, but the data that changes behavior is that of your operation: which threats does your FRAT history record most? Where do your SMS reports concentrate? The operation that records in a structured way discovers its own potential LOC-I and CFIT — while they are still hazard statistics, not accident statistics.
This article is informational. The data and categories cited follow the international safety taxonomies (CICTT/ICAO) and the public overviews of bodies such as CENIPA, NTSB and AOPA — consult current publications for specific figures by period and segment.