DEN99LA052
1999-03-14 · LEADVILLE, Colorado, United States · None · 1 aircraft · Status: Completed
Airport LXV
Current FAA registration · N90995
- Make / Model
- PIPER PA-18-150
- Engine
- LYCOMING 0-320 SERIES (180 hp)
- Seats / Engines
- 2 seats · 1 engine
- Last airworthiness date
- 19860529
- ADS-B equipped
- Yes — Mode-S AC944C
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
The pilot's inadequate compensation for the gusty crosswind conditions. A factor was the gusting crosswind
Factual narrative
On March 14, 1999, approximately 1345 mountain standard time, a Piper PA-18 Super Cub, N90995, was substantially damaged following departure from the side of the runway during landing roll and nosing over in the snow at Lake County Airport, Leadville, Colorado. The private pilot, the sole occupant in the airplane, was not injured. The airplane was being operated by the owner under Title 14 CFR Part 91. Visual meteorological conditions prevailed for the cross-country personal flight which originated from Colorado Springs, Colorado, approximately 1 hour, 35 minutes before the accident. No flight plan had been filed. The pilot said that as he approached Leadville from the south, he heard on the airport's UNICOM that the winds were 320 degrees at 8 knots, and that runway 33 was the active runway. As the pilot approached the airport, he requested airport advisories, and was told that the wind was 300 degrees at 8 knots. The pilot reported that he set up for a midfield landing. As he began to flare, a "strong direct crosswind gust suddenly struck the airplane." The pilot said that he attempted to perform a go-around, but departed the right side of runway 34. The airplane nosed over in one foot deep snow. The right wing and rudder were damaged. The pilot noted that after the accident, the windsock, located near the center of the runway, was standing "almost straight out, and was perpendicular to the runway (with winds from the west)." He further observed that this midfield gusting wind condition continued for approximately 20 minutes. The pilot set up to land midfield on runway 34 with winds reported to be from 300 degrees at 8 knots. According to the pilot, during the landing flare the airplane encountered a 'strong' direct crosswind gust. The airplane departed the right side of the runway, and nosed over in deep snow. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1999_DEN99LA052.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
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Related research
Matched on aircraft type or causal vocabulary (go-around). All research papers
- NASA NTRS 2025 · Conference Paper A Training Study to Improve Monitoring During A Go-Around
As part of an FAA program to improve go-around (GA) safety, we were asked to determine if we could improve the performance of the Pilot Monitoring (PM) during a GA maneuver.
- Flight Safety Foundation 2024 · FSF / AeroSafety World Go-Around Safety Forum Findings
Foundation Go-Around Safety Forum technical findings — examines why pilots fail to execute go-arounds when criteria are met (stabilized approach gate not met, energy state out of envelope, traffic con…
- Semantic Scholar 2022 · Article (Journal of Safety Research) Go-around accidents and general aviation safety.
INTRODUCTION Changes in General Aviation (GA) accident rates, specifically in the go-around phase, are examined by comparing the number of accidents, the proportion of fatal accidents, and the proport…
- Semantic Scholar 2021 · Article (Aerospace) Classification and Analysis of Go-Arounds in Commercial Aviation Using ADS-B Data
Go-arounds are a necessary aspect of commercial aviation and are conducted after a landing attempt has been aborted. It is necessary to conduct go-arounds in the safest possible manner, as go-arounds …
- NASA NTRS 2021 · Accepted Manuscript (Version with final changes) Go-Around Criteria Refinement for Transport Category Aircraft
Presently, airline pilots are trained to go around if, when lower than 500 ft above the ground, they are outside of a handful of parameters such as airspeed, position, and rate of descent.
- NASA NTRS 2019 · Conference Paper Validation of Proposed Go-Around Criteria Under Various Environmental Conditions
This paper evaluates the effects of environmental conditions on touchdown performance under varying approach states and validates proposed go-around criteria developed using data from a previously con…