NTSB probes why a UPS jet lost an engine and crashed on takeoff
NTSB probes why a UPS jet lost an engine and crashed on takeoff
NTSB probes why a UPS jet lost – The National Transportation Safety Board (NTSB) will convene Tuesday and Wednesday to examine the circumstances surrounding the crash of a UPS McDonnell Douglas MD-11F jet. The investigation focuses on the incident where the aircraft lost one of its engines shortly after departing from Louisville Muhammad Ali International Airport in Kentucky last year. This comes as the Federal Aviation Administration (FAA) has recently authorized the return of the same model of plane to service. The NTSB’s inquiry aims to uncover the root causes of the accident and assess the safety measures that may have failed.
Crash Details and Casualties
On November 4, the UPS flight, designated as 2976, was en route to Hawaii when it encountered a critical failure during takeoff. The cargo plane, which had only left the ground moments earlier, experienced an engine detachment that sent flames and debris spreading across half a mile. Black smoke rose prominently into the sky, marking the severity of the crash. A total of 14 individuals lost their lives, including three crew members aboard the aircraft and 23 people on the ground. The plane, a 34-year-old model with three engines—two mounted on the wings and one positioned on the tail—was a key player in the event.
NTSB’s Initial Findings
The NTSB has released preliminary conclusions indicating that the failure stemmed from two structural fittings that secured the left engine to the wing. These fittings, which are crucial for maintaining the aircraft’s integrity during flight, were found to have experienced fatigue cracking and over-stressing. Investigators, through a detailed frame-by-frame analysis of airport surveillance footage, observed the engine separating from the wing and ascending over the aircraft before falling beside the runway. The plane only reached an altitude of approximately 30 feet before impacting a warehouse, storage yard, and petroleum recycling facility, according to the findings.
Response and Grounding
Three days following the crash, UPS initiated the grounding of its MD-11 fleet, leading the FAA to take similar action the subsequent day. The decision to halt all MD-11 operations in the United States was made pending thorough inspections. At the time of the incident, these planes comprised roughly 9% of UPS’ total fleet, according to the carrier. Other airlines, such as FedEx and Western Global Airlines, also operated the same type of aircraft. Despite the grounding, the FAA has now approved Boeing’s protocol for the safe reintroduction of MD-11s into service, as stated in a recent release.
“After extensive review, the FAA approved Boeing’s protocol for safely returning MD-11 airplanes to service,” the agency told CNN in a statement.
Boeing, which now oversees the MD-11 following its acquisition of McDonnell Douglas, was responsible for providing the necessary inspection and repair guidelines. A company spokesperson added, “Boeing continues to provide technical support and guidance to help them meet FAA requirements,” highlighting the manufacturer’s ongoing involvement in the case. UPS has announced that it does not intend to continue operating its MD-11 planes, while FedEx has already resumed some flights with aircraft that have undergone repairs and inspections.
Ongoing Investigations and Hearings
This week’s hearings will bring to light further details regarding the crash’s cause. Investigators will review all prior maintenance records, including the overhaul work completed over six weeks in San Antonio, Texas, during which the aircraft was out of service. The plane had returned to UPS operations less than a month before the incident, raising questions about its readiness. Additionally, the data from the cockpit voice recorder and flight data recorder will be scrutinized to determine what the pilots reported and how they managed the situation during the flight.
Operational Safety and Design Probes
Key aspects of the investigation will include an analysis of the operational safety processes that UPS was required to follow. This involves reviewing the information the company provided to Boeing and the FAA, as well as examining the design of the engine attachment systems. The NTSB will assess whether the procedures followed were adequate or if there were gaps in communication or oversight. These findings will be crucial in understanding the broader implications for aircraft maintenance and design standards.
A final report from the NTSB is generally expected within 18 to 24 months after an accident, providing a comprehensive overview of the probable causes. The agency does not assign blame but instead focuses on identifying the factors that contributed to the incident. The report will serve as a guide for improving safety protocols across the aviation industry, ensuring that similar accidents are prevented in the future. As the hearings progress, new insights into the crash will be shared, offering a clearer picture of the events leading to the disaster and the steps needed to avert such occurrences.
