NTSB CAROL · Event
Event IAD99LA040
Aircraft involved
Probable cause & findings
The student pilot's failure to maintain the proper rate of descend on final approach followed by an improper flare which resulted on a hard landing.
Factual narrative
On April 30, 1999, at 1052 eastern daylight time, a Piper PA-38, N2338D, was substantially damaged while landing to Runway 34 at the Manassas Regional Airport (HEF), Manassas, Virginia. The student pilot was not injured. Visual meteorological conditions prevailed for the solo instructional flight that originated at HEF, about 0830. No flight plan was filed for the flight conducted under 14 CFR Part 91. The pilot was interviewed by telephone and he provided a written statement. He said the purpose of the flight was to practice takeoffs and landings as well as some in-flight maneuvers. The pilot said he flew approximately 2.5 hours before returning to Manassas. The pilot monitored the Automated Terminal Information Service (ATIS) while approaching the airport. He said the wind speed concerned him until he heard the tower operator report calmer winds. In a written statement, the pilot said: "I was pleasantly surprised that the crosswind was less than I expected and with little effort I was able to crab maintaining a straight approach. At approximately 20 feet above the ground and with the airspeed at 55 knots I used left rudder to align the nose with the centerline. At that time, I heard the stall warning horn and my impulse was to add power. I'm not sure if I ever actually pushed the throttle forward or not, but before the plane could have responded anyway, it dropped straight to the ground (it felt like the bottom just dropped out), hitting extremely hard approximately 8-10 feet from the end of the runway..." According to the pilot, the nose gear collapsed, the propeller struck the runway and the airplane skid approximately 100 feet before it stopped. In a telephone interview, the pilot said: "The airplane was running very smooth, no problem at all. I think it was wind shear. I'm not experienced enough to know for sure, but from what I've read, that's what it seemed like. The bottom just dropped out. The stall warning was very brief and then nothing. I was on the ground." The pilot said the ATIS reported winds from 070 degrees at 13 knots gusting to 18 knots, and the tower reported winds from 050 at 10 knots. At 1055, winds reported at the Manassas Regional Airport were from 070 degrees at 6 knots, gusting to 14 knots. The student pilot reported 64 hours of total flight experience, all of which was in the PA-38. The student pilot returned from a solo training flight for landing on runway 34. Winds reported were form 070 degrees at 6 knots gusting to 14 knots. The student pilot reported that approximately 20 feet above the runway threshold, the stall warning horn sounded and the airplane struck the ground immediately, with no time to recover. He reported there were no mechanical deficiencies with the airplane. The student pilot reported 65 hours of total flight experience, all in make and model. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1999_IAD99LA040.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, stall). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.
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Optimal nonlinear estimation for aircraft flight control in wind shear
The most recent results in an ongoing research effort at Princeton in the area of flight dynamics in wind shear are described.
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This study presents a computational investigation of steady state aerodynamics of the Subsonic Ultra-Green Aircraft Research (SUGAR) Transonic Truss-Braced Wing (TTBW) configuration over a wide range …
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Two-dimensional square ice in graphene nanocapillaries at room temperature is a fascinating phenomenon and has been confirmed experimentally.
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Polycrystallinity enhances stress build-up around ice
Damage caused by freezing wet, porous materials is a widespread problem, but is hard to predict or control. Here, we show that polycrystallinity makes a great difference to the stress build-up process…
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