16 Injured as United Airlines Boeing 787 IRUs Fail, NTSB Reports
Title: United Airlines Boeing 787-8 Incident: NTSB Reports Inertial Reference Unit Failures
Introduction
On January 24, 2025, a United Airlines Boeing 787-8 experienced a critical incident over Africa, resulting in injuries to 16 passengers and crew. The National Transportation Safety Board (NTSB) recently disclosed that two Inertial Reference Units (IRUs) failed prior to a rapid altitude shift during United flight 613. This shocking event has raised concerns about aviation safety and the reliability of aircraft systems.
What Happened During the Flight?
United Airlines Flight 613 took off from Murtala Muhammed International Airport in Lagos (LOS) shortly after midnight on January 23, 2025. Approximately 93 minutes into the flight, the aircraft encountered a sudden altitude drop, prompting chaos in the cabin as personal items and food trays were thrown about.
- The flight carried 243 passengers and 11 crew members.
- After the altitude upset, the aircraft returned safely to Lagos, landing at approximately 3:22 a.m. on January 24.
Injuries Reported
The Federal Airports Authority of Nigeria (FAAN) reported that four passengers and two crew members were hospitalized due to serious injuries but were later discharged. Additionally, 27 passengers and five crew members experienced minor injuries during the incident.
NTSB Findings on IRU Failures
The NTSB’s preliminary report specified that the left IRU failed about 1 hour and 5 minutes before the altitude incident, with the right IRU failing approximately 55 minutes later. At 01:31 Lagos time, while the aircraft was flying over Côte d’Ivoire, the autopilot disengaged, and cockpit alerts activated, forcing the pilots to take manual control.
- The significant altitude variations lasted approximately 12 minutes, with the aircraft deviating from its cruising altitude of 36,000 feet.
- The highest altitude reached was 36,203 feet, while the lowest was 35,577 feet.
Investigation and Response
The NTSB report indicates that the event occurred during meal service, contributing to the injuries. The location of the incident places primary investigative authority with Côte d’Ivoire, which has agreed to assist the NTSB in their inquiry. The flight data and inertial reference units were removed from the aircraft and sent to Washington, D.C., for further analysis.
Unfortunately, the NTSB was unable to retrieve cockpit audio from the incident, as the cockpit voice recorder only retains two hours of data and had been overwritten by the time investigators arrived.
Conclusion and Next Steps
The findings from the NTSB shed light on the serious implications of IRU failures in commercial aviation. United Airlines has stated that they are cooperating with both U.S. and Nigerian aviation authorities to determine the full circumstances surrounding the incident.
As aviation safety remains a top priority, further investigations will be crucial to ensuring that such incidents are minimized in the future.
Call to Action
What are your thoughts on this incident? Share your opinions in the comments below or check out our related articles on aviation safety and technology advancements in the airline industry. For more information, visit the NTSB’s official website here or read about the latest developments in aviation technology here.
