NTSB Updates 21 Air Flight 7598 Miami Runway Excursion

Preliminary Findings from NTSB Investigation

The National Transportation Safety Board (NTSB) has released initial data from the investigation into the September 6, 2026, Boeing 767 runway excursion involving 21 Air Flight 7598 at Miami International Airport (MIA). The cargo aircraft, operating for Amazon Prime Air, touched down at a groundspeed of 158 knots, significantly exceeding the typical target landing speed of 130 to 145 knots for the variant. The accident resulted in five fatalities on the ground after the aircraft struck vehicles near the runway end.

Unstable Approach and Cockpit Data

Recovered data from the Cockpit Voice Recorder (CVR) and Flight Data Recorder (FDR) reveals a sequence of events consistent with an unstable approach. During the final minutes, the flight crew received multiple warnings, including four consecutive "too low terrain" alerts. Although the crew attempted to initiate a go-around, the maneuver was unsuccessful, and the aircraft departed the paved surface. The FDR recorded over 400 parameters, indicating that speed brakes and thrust reversers were not deployed during the excursion.

Infrastructure and Regulatory Scrutiny

The accident has reignited discussions regarding Runway Safety Area (RSA) standards at space-constrained airports. MIA's Runway 30 lacks an Engineered Material Arresting System (EMAS), a critical safety technology designed to decelerate overrunning aircraft. Regulatory oversight under 14 CFR Part 121 is now under intense review, particularly regarding the training and safety management systems of third-party cargo operators.

Historical Precedents and Industry Trends

This incident draws parallels to the 2019 Atlas Air Flight 3591 crash, which also involved a Boeing 767 cargo aircraft operated by a third-party contractor. That investigation highlighted systemic issues with pilot training and spatial disorientation. The current industry trend shows increasing scrutiny on the safety of aging passenger-to-freighter (P2F) conversions, especially within the rapidly expanding e-commerce logistics sector.

21 Air Flight 7598 vs. Standard Operations

Why the Safety Culture Matters

Beyond the technical data, the investigation is examining broader organizational factors. According to testimony from former 21 Air employees, there have been allegations of pressure to maintain schedules despite fatigue concerns. These claims, paired with the fatal outcome, position the operator under significant regulatory pressure. For the aviation industry, the incident serves as a stark reminder of the risks associated with outsourced cargo operations and the critical need for robust safety oversight across all flight sectors.