NTSB CAROL · Event
Event ERA21LA153
Aircraft involved
Probable cause & findings
The pilot’s improper landing flare, which resulted in a hard landing, overstress fracture of components of the left main landing gear, and subsequent runway excursion.
Factual narrative
The pilot stated that prior to landing he obtained the automated weather report from a nearby airport and continued to the destination where he overflew the airport and entered the traffic pattern for landing. He noted the direction of the windsocks and that they favored the selected runway, and he continued his approach. He turned onto the base and final legs of the airport traffic pattern, and while on final approach maintained 85 knots with the flaps fully extended and the landing gear down and locked. The pilot-rated passenger described the landing as, “harder than normal” while the pilot described it as being, “moderate to hard.” After brake application the airplane veered to the left, which the pilot attributed to be from a “soft” right brake. The airplane went off the left side of the runway and yawed 180° coming to rest upright. The pilot also stated that he thought the wind may have shifted to a tailwind on landing. Postaccident examination of the airplane by a Federal Aviation Administration (FAA) inspector revealed that the outboard portion of the airplane’s right wing was substantially damaged during the accident. The left wing immediately above the left main landing gear was also damaged and displayed signatures consistent with the landing gear strut being forced upward through the wing skin. Additionally, the left main landing gear strut had separated from the trunnion fitting assembly. The strut showed deep scratches and gouges consistent with being driven upward through the wing’s skin after it separated from the trunnion. No evidence of pre-existing cracking or fractures was noted on the trunnion assembly. The FAA inspector also examined the airplane’s brakes and noted no resistance when actuating the pedals from the left seat. Despite this finding, it is most likely that the airplane’s left main landing gear was displaced from its normal orientation during the hard landing, which resulted in the runway excursion. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12
NTSB Findings
Hierarchical cause / factor breakdown from the FAA bulk avdata database. Each finding tagged C (Cause) or F (Factor).
- — Personnel issues-Task performance-Use of equip/info-Aircraft control-Pilot
- — Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Landing flare-Not attained/maintained
Verbatim from NTSB's published report. Source file
NTSB_2021_ERA21LA153.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
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Related research
What the literature says.
Academic papers and agency reports matching this event's aircraft type or causal vocabulary (runway excursion). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.
- SKYbrary (Eurocontrol) 2024 · SKYbrary article
Runway Excursion — SKYbrary Knowledge Base
SKYbrary runway excursion review — RE-OE (overruns) + RE-LO (lateral). Risk drivers: long landing, high approach speed, contaminated surface, tailwind, mis-set autobrakes.
- NTSB Aircraft Accident Reports 2019 · Accident report
Embraer ERJ 175 Runway Excursion at Charlotte Douglas
Republic Airline ERJ-175 runway excursion CLT, January 2018. Examines a low-energy runway excursion involving misuse of autobrakes + thrust reverser response after a high-crosswind landing on a contam…
- NASA NTRS 2025 · Presentation
Uncovering Resilient Behavior in the Aviation Safety Reporting System Using Large Language Models
Resiliency is present in everyday life, both in system design and exhibited by the operators that function within these systems.
- NASA NTRS 2025 · Conference Paper
Uncovering Resilient Behavior in the Aviation Safety Reporting System Using Large Language Models
Resiliency is present in everyday life, both in system design and exhibited by the operators that function within these systems.
- Flight Safety Foundation 2024 · FSF / AeroSafety World
Runway Safety Initiative Final Report (RSI)
Foundation Runway Safety Initiative final report — comprehensive analysis of runway excursion + incursion risk drivers worldwide.
- Semantic Scholar 2020 · Article
Towards online prediction of safety-critical landing metrics in aviation using supervised machine learning
Abstract In recent years, due to the increased availability of data and improvements in computing power, application of machine learning techniques to various aviation safety problems for identifying,…
Browse the full corpus — academia portal ↗