NTSB CAROL · Event
Event FTW97LA061
Registry · N8450P
FAA Aircraft Registry record.
Make / Model
PIPER PA-24-400
Year of manufacture
1964 · 32 years old at event
Engine
LYCOMING IO-720 (400 hp)
Seats / Engines
4 seats · 1 engine
Last airworthiness date
19801209
ADS-B equipped
Yes — Mode-S AB94D2
Registrant of record
KROLL COREY
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
failure of the pilot to maintain proper alignment with the runway, while landing. A factor relating to the accident was: the variable/gusty wind condition with possible windshear.
Factual narrative
On December 10, 1996, at 1326 mountain standard time, a Piper PA-24-400, N8450P, owned and operated by Altob, Inc., was substantially damaged when it collided with taxiway signs and runway lights during landing at Broomfield, Colorado. The private pilot, the sole occupant, was not injured. Visual meteorological conditions prevailed, and no flight plan was filed for the business flight conducted under Title 14 CFR Part 91. The flight originated at Lamar, Colorado, on December 10, 1996, at 1201. According to the pilot's accident report, ATIS (Automatic Terminal Information Service) Information X-ray reported the wind to be from 260 degrees at 20 knots, with gusts to 30 knots. The pilot said that due to moderate turbulence he was experiencing, he decided to land "a little long and 10 knots fast with no flaps." As he flared for landing, the airplane "suddenly gusted up, then down, with left wing high and strongly to the right." He corrected with full left rudder and full power, but the airplane did not respond. The right landing gear struck a VARSI (sic) tower, then collided with a second VARSI structure. The pilot said he regained control and was able to align the airplane with the runway centerline at an altitude of 10 to 15 feet. He "rejected (the) impulse to 'go around'" and landed, holding the nose up with full up elevator "to minimize engine damage if (nose) gear (was) gone." As the nose was lowered, the airplane departed the right side of the runway. Jeffco Airport officials reported three runway signs and four runway lights were damaged. The pilot also enclosed a hand-written transcript of his radio communications with the control tower, and a diagram of wind directions and velocities recorded at various times during the approach and landing. At 1325:57, the wind was from 270 degrees at 35 knots. Forty-five seconds later, at 1326:42, the wind was from 230 degrees at 25 knots. The pilot said this difference of 40 degrees and 10 knots was "evidence of wind shear almost exactly as landing flair commenced," and that it felt like "a sudden quartering tail wind from the left, leaving no rudder authority." In his accident report, the pilot indicated his last biennial flight review was in 1989. No exact date was given. According to the pilot, the wind was variable from 230 to 270 degrees at 25 to 35 knots, although the ATIS reported the wind was from 260 degrees at 20 gusting 30 knots. Due to the wind condition (with moderate turbulence), the pilot decided to land 'a little long and 10 knots fast with no flaps.' As he flared for landing, the airplane 'gusted up, then down, with left wing high and strongly to the right.' The airplane struck two VASI light structures, while airborne. After the pilot realigned the airplane with the runway, he landed and the airplane departed the right side of the runway. Airport officials later reported three runway signs and four runway lights damaged. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1996_FTW97LA061.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 (wind shear, turbulence). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.
- NASA NTRS 2019 · Contractor Report (CR)
An Examination of Aviation Accidents Associated with Turbulence, Wind Shear and Thunderstorm
The focal point of the study reported here was the definition and examination of turbulence, wind shear and thunderstorm in relation to aviation accidents.
- NASA NTRS 2019 · Preprint (Draft being sent to journal)
Convectively Induced Turbulence Encountered During NASA's Fall-2000 Flight Experiments
Aircraft encounters with atmospheric turbulence are a leading cause of in-flight injuries aboard commercial airliners and cost the airlines millions of dollars each year.
- NASA NTRS 2019 · Technical Memorandum (TM)
Some aspects of wind shear in the upper atmosphere
Hydrodynamic turbulence and wind shear in upper atmosphere
- Embry-Riddle Scholarly Commons 2019 · Journal article (IJAAA)
Low Level Turbulence Detection For Airports
Abstract—— Low level wind shear and turbulence present a serious safety risk to aircraft during the approach, landing and take-off phases.
- Embry-Riddle Scholarly Commons 2018 · Journal article (IJAAA)
Evaluating the Effect of Turbulence on Aircraft During Landing and Take-Off Phases
—— Low level wind shear and turbulence present a serious safety risk to aircraft during the approach, landing and take-off phases.
- arXiv 2026 · arXiv preprint
Direct Numerical Simulations of Ice-Ocean Boundary Turbulence
Turbulent heat and freshwater transport at ice-ocean interfaces controls glacier and iceberg melt rates, yet the underlying physics remains poorly constrained.
Browse the full corpus — academia portal ↗