Comparing Runway Excursion Factors Scott R. Winter, Steven M. Leib, Robert C. Geske, Tyler B. Spence, Lauren A. Sperlak, Lukas Rudari, Craig D. Cestari Flight Safety Foundation Student Chapter at Purdue University October 30th, 2013 Flight Safety Foundation 66th International Air Safety Summit Washington, D.C. Special thanks to Founding Chapter Advisor: Stewart Schreckengast
Student Chapter Inaugural chapter at Purdue University Research based student organization, consisting of both undergraduate and graduate students Currently comprised of 11 active members
Introduction & Purpose Review of factors of runway excursions 1 Comparison of reports 2 Analysis of FSF dataset for landing excursions 3
Comparing Reports FSF Report Boeing Report Reports are independent Most causal factors contributing to runway excursions are similar
Comparing Reports
Database Exploration Type of Operator Aircraft Type Aircraft Class After comparing reports, chapter members reviewed various other parameters: Type of Operator Aircraft Type Aircraft Class Factors after Stabilized Approaches
Type of Operator Contaminated runway Factors remained fairly constant across the Type of Operator Unstable Approach Landing long
Type of Operator Contaminated Runway Reverse Thrust Malfun. Unstable Apph
Risk Factor by Aircraft Type Aircraft type does not appear to play a role
Aircraft Class Top 3 factors for business jets, commercial jets and turboprops: Contaminated runways Unstabilized approach Landing outside touchdown zone
Aircraft Class Excursion Factors of Aircraft Class by Percentage
Stabilized Approaches Why do excursions happen after stabilized approaches? 183 out of 520 landing excursions from FSF Database (1995-2010) we classified as stable approaches (50 were unknown)
Stabilized Approaches
Pilot Factors – Stabilized Approaches
Conclusions Excursion factors appear to be fairly consistent across conditions 1 Most commonly cited factors were: Runway contamination Landing long/fast Landing after unstabilized approach 2 Even after a stabilized approach, safe landing is not guaranteed 3
The End Questions?