Investigation Summary
The aircraft, a Bombardier CRJ-200LR, had been parked overnight at Baotou Airport in sub-freezing temperatures. Despite the presence of frost on the wing surfaces, the crew did not request de-icing services. The CRJ-200 is known to be particularly sensitive to wing contamination because it lacks leading-edge slats, relying on a clean, sharp leading edge for lift. As the aircraft rotated for takeoff at 08:21 local time, the frost disrupted the airflow, leading to a sudden loss of lift and an aerodynamic stall. The aircraft began to shake violently before plunging into a park ticketing office and then into the icy waters of Nanhai Lake. The investigation by the State Administration of Work Safety concluded that the failure to de-ice was the primary cause, leading to administrative punishments for 12 China Eastern officials.
Final Conclusions
The official investigation concluded that the accident was caused by wing contamination, specifically frost, which led to an aerodynamic stall during the initial climb. The failure of the ground crew and flight crew to perform de-icing procedures in cold weather conditions was identified as the critical operational lapse. Management deficiencies within China Eastern Airlines and its Yunnan subsidiary were also cited as contributing factors.
Video Analysis
No video analysis linked for this case file yet.
Airframe & Maintenance
Systems & Failure Modes
Wings
The CRJ-200 wings lack slats, making them extremely sensitive to even small amounts of frost or ice contamination.
De-icing System
Ground de-icing was not utilized despite the aircraft being parked overnight in freezing conditions.
Interesting Facts
- 01The aircraft was only two years old, having been delivered in November 2002.
- 02Two park employees on the ground were killed when the aircraft struck a ticket office.
- 03The crash occurred just one month after the high-altitude stall accident of Pinnacle Airlines Flight 3701, another CRJ-200.
- 04China Eastern Airlines paid 21.4 million yuan in environmental remediation for the damage to Nanhai Park.
- 05The flight was carrying 47 passengers and 6 crew members.
Safety Actions & Advisories
Fleet Grounding
The Civil Aviation Administration of China (CAAC) briefly grounded all CRJ-200 aircraft in China following the accident to check for technical faults.
Administrative Disciplinary Action
Twelve individuals, including the Chairman of China Eastern Airlines, received administrative warnings or penalties for safety management failures.