Flight 3456 departed Chongqing Jiangbei International Airport on schedule. The Boeing 737-31B — registration B-2925, serial number 27288 — had accumulated more than 8,500 flight hours and was powered by two CFM International CFM56-3C1 turbofan engines, a reliable and widely-used powerplant. The aircraft and crew were flying into deteriorating conditions. A thunderstorm was active over Shenzhen that evening, and the approach to Huangtian Airport, now known as Shenzhen Bao'an International Airport, was anything but straightforward. Thunderstorms in the Pearl River Delta can build rapidly and intensely, fed by the warm, humid air that flows off the South China Sea. For the crew of Flight 3456, the weather was not an abstraction — it was the immediate, physical reality of their final approach.

The sequence of events in the aircraft's final minutes was pieced together from the cockpit voice recorder and flight data. During the approach, the crew made a left turn while climbing to 1,200 meters. Air traffic control asked them to activate their transponder so radar could confirm their position, but the secondary surveillance radar received no signal — the transponder appeared to be off. At 21:23:57, the crew reported they were on the downwind leg and asked other aircraft to clear the airspace. Less than a minute later, at 21:24:40, they declared an emergency. Multiple warnings were sounding in the cockpit simultaneously: the main warning, the hydraulic system warning, and the gear warning. At 21:24:58, the crew requested full emergency airfield support and reported they would attempt to land heading south. Air traffic control approved. The aircraft was cleared. The runway was waiting.

Investigators determined there had been a first landing attempt, heading north — and it had gone wrong before the crew declared the emergency. Debris found near the southern end of the runway told the story: the left front tire had exploded on touchdown. Rivets, metal sheets, a rubber tube, and a retaining clip were scattered across the runway surface. The crew, facing a blown tire and compounding system warnings, had gone around and set up for a second attempt, this time heading south. The second approach brought the aircraft down 427 meters from the runway threshold, where a long surface scratch from the fuselage marked the moment of contact. The plane rolled approximately 600 meters before it disintegrated, breaking into three sections as it careened off the runway. Fire engulfed the central fuselage and the trailing edge of the right wing. The forward section, 12 meters long, came to rest with its nose pointing north. The rear section remained relatively intact — the only part not destroyed by fire.

In the immediate aftermath, rescue teams worked through fire and wreckage. Thirty-nine people were pulled from the aircraft alive. Thirty-five were not — thirty-three passengers and two crew members. Each had boarded that plane with somewhere to be in Shenzhen: families, colleagues, plans for the days ahead. Their names were recorded; their families were notified. In June 2007, ten years after the accident, an audio recording described as the final 12 minutes and 27 seconds from the cockpit voice recorder was leaked online. An expert from China's Civil Aviation Administration stated the recording was unlikely to be fabricated. Whatever those minutes contained, they were the last moments of people doing their jobs under impossible conditions, trying to bring their passengers home.

The accident at Shenzhen in 1997 contributed to a broader reckoning with aviation safety in China during that period. The Civil Aviation Administration of China conducted the official investigation, and the findings informed subsequent training and procedural standards. The crash site is gone, absorbed into what is now a much-expanded international airport that serves tens of millions of passengers annually. Shenzhen itself has transformed beyond recognition in the years since — a skyline risen from what was farmland, a city of skyscrapers visible from cruising altitude above the Pearl River Delta. The runway where Flight 3456 came to rest is part of a vast complex now. But for those who lost someone on that May night, the geography of this place is permanently marked by what happened there.