The flight was a short regional run, the kind of trip locals took without a second thought: roughly 300 kilometers from Punta Arenas down to Puerto Williams, the small Chilean naval town facing Argentina across the channel. The aircraft was a British Aerospace BAe 146-200, registration CC-CET, just four and a half years old and well suited to short fields. It carried sixty-six passengers and six crew. It departed Punta Arenas at 14:51 local time without any sign of trouble, climbing away over the maze of fjords and islands toward one of the most isolated runways in commercial aviation.

At 15:15 the crew was cleared for a VOR approach to runway 26. The reported wind was light, 180 degrees at 4 knots. Then the controller passed an update - the wind had shifted to around 160 degrees. The captain made a choice that would define the flight: rather than continue to runway 26, he requested a direct approach to the opposite end, runway 08. Air traffic control approved it. But the change compressed the crew's planning at the worst possible moment, on final approach to a difficult field, and the aircraft crossed the threshold faster than the procedure allowed - above the target touchdown speed, with a tailwind now pushing it down a wet, downhill runway.

On a runway this short, with a negative slope and a slick surface, the margins vanished. The brakes found little grip. The jet rolled past the end of the pavement, off the land entirely, and slid into the Beagle Channel. Of the seventy-two people aboard, fifty-two lived - all six crew members and forty-six of the passengers escaped the sinking aircraft in the frigid water. Twenty passengers were lost. For a town of a few thousand people, a place where nearly everyone knows everyone, the toll was a wound felt by the whole community, not a statistic but neighbors, relatives, and friends who had simply been flying home.

Chilean investigators concluded the probable cause was a failure of planning by the pilot - the late decision to switch runways, combined with a misapplication of the landing procedure that followed from it. A chain of conditions sealed the outcome: the downhill slope, the wet runway, the tailwind, and the poor braking action that left no room to recover. It is the kind of accident that haunts aviation precisely because no single failure caused it. A small change, accepted under time pressure, met a runway that punished any error. The lesson - that the most dangerous moments are the ones that feel manageable - was paid for here at the bottom of the world.

To understand the accident, you have to understand the place. Puerto Williams is a naval town of a few thousand on Isla Navarino, often called the southernmost town in the world, reachable in 1991 mainly by air or by sea through the channels. Its airfield exists because nearly everything here depends on the link to Punta Arenas - supplies, medical care, family. That dependence is exactly why the runway is so unforgiving: there was no room to build it long, no flat ground to spare, only a short strip pinched between the hills and the Beagle Channel. Pilots flying the route knew its reputation. The crash did not change the geography, but it sharpened the respect that the field has demanded ever since, in a corner of the planet where the margin between an ordinary landing and disaster has always been thin.