EasyJet A320 Runway Error at Luton: AAIB Serious Incident

An EasyJet flight EZY2335 experienced a serious safety occurrence on June 13, 2025, when the flight crew initiated a takeoff from an incorrect intersection at London Luton Airport (LTN). The Airbus A320-214, carrying 180 passengers and six crew members, departed from Intersection Alpha instead of the full runway length, resulting in a significantly reduced safety margin. According to the UK Air Accidents Investigation Branch (AAIB), the aircraft cleared the runway threshold by only 65 feet (19 meters).

Performance Calculations and Intersection Errors

The aircraft had a takeoff weight of 68.9 tons (68,887 kg), requiring the full Take-Off Run Available (TORA) of 1,982 meters for safe departure. By mistakenly selecting Intersection Alpha, the crew inadvertently reduced the available takeoff distance by 211 meters to 1,771 meters. The crew had performed their performance calculations using an Electronic Flight Bag (EFB) based on the full runway length. However, after observing three preceding aircraft depart from the intersection, the flight crew succumbed to confirmation bias and taxied to the incorrect position.

Detection and Regulatory Context

The crew remained unaware of the performance discrepancy during the takeoff roll. The error was only identified later that same day through the operator's Flight Data Monitoring (FDM) system. The incident is classified as a 'Serious Incident' by the AAIB, highlighting systemic risks regarding human factors in cockpit operations. While Airbus performance analysis suggested the aircraft would have met obstacle clearance requirements even in the event of an engine failure at V1, the reduced margins prompted immediate operational review.

Historical Precedents at Luton

This event follows a concerning trend of runway errors at the airport. On April 22, 2025, an Ascend Airways Boeing 737-800 similarly cleared the runway end by just 13 feet, which remains under active investigation. Furthermore, another EasyJet A320 was involved in a serious safety occurrence at Manchester Airport on July 6, 2025, after departing from the wrong intersection. These precedents suggest a broader industry challenge regarding procedural compliance during intersection departures.

Luton Runway 25 Takeoff Distance Comparison

Operational Procedural Changes

In response to the findings, EasyJet flight operations and training departments have been required to amend pre-flight procedures. Pilots must now actively record and cross-check the exact intersection used in performance calculations during taxiing and line-up to prevent recurrence. The airline stated it fully assisted with the investigation and emphasized that safety remains the highest priority for its customers and crew.

Future Regulatory Milestones

The AAIB continues to monitor intersection takeoff procedures at major UK hubs. The final report for the April 2025 Ascend Airways Luton incident is expected to be published in late 2026. This document is anticipated to provide further guidance on mitigating human factors in cockpit intersection selection.

Why This Matters for Flight Safety

The incident underscores the critical importance of rigorous adherence to performance data, especially when environmental cues suggest alternative procedures. For operators, the reliance on FDM as a safety net is essential, but it remains a reactive measure. This event signals a need for enhanced cockpit discipline to ensure that performance calculations match actual runway geometry, particularly at constrained airports where intersection departures are common.