NTSB CAROL · Event
Event IAD99LA030
Registry · N210C
FAA Aircraft Registry record.
Make / Model
CESSNA P210N
Year of manufacture
1979 · 20 years old at event
Engine
CONT MOTOR TSIO-520 SER (300 hp)
Seats / Engines
6 seats · 1 engine
Last airworthiness date
19790224
ADS-B equipped
Yes — Mode-S A1B9B4
Registrant of record
JETTECH HOLDINGS LLC
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
was the in-flight encounter with thermal sink over unsuitable terrain for landing.
Factual narrative
On February 10, 1999, at 1415 eastern standard time, a WSK PZL-Krosno KR-03A glider, N210C, was substantially damaged during an off airport landing in Kutztown, Pennsylvania. The certificated flight instructor was not injured. The dual student pilot received minor injuries. Visual meteorological conditions prevailed for the local instructional flight that originated at the Kutztown Airport (N31), approximately 1350. No flight plan was filed for the flight conducted under 14 CFR Part 91. In a written statement, the flight instructor said: "...[he] followed the tow to the north where we encountered lift, to approximately 4,000 feet, after releasing from the tow plane which shortly turned to sink. Turned south toward the airport, and the sink rate was still increasing as we shortened the distance between the airport and us. At times we encountered slight lift but to no avail, we'd enter sink again. Altitude getting critically low, turned and landed the aircraft in a field. No injuries to occupants of glider, when the glider was driven to a hard landing on the lee side of the hill. Wings were level and the glider was still flying when we touched down. (Only wish the landing site was level)." In a telephone interview, the student pilot said: "Before we left he said we'd be out for a long time because there was a lot of lift. He'd already been out and said there was a lot of lift. We were towed over to the mountains where there was a lot of lift and then the weather seemed to change. It just seemed like all we got was sink. We were watching the variometer and it went from a lift situation to a sink situation. [The instructor] said we might have to look for a field to put it down. He took the flight controls and we searched for a place to put it down but all the landing sites looked lame. Then it seemed like, we were down. There were trees coming up and it didn't look like we were going to clear them. We went to the left [of the trees] and were in a level attitude at ground contact. It wasn't stalling or anything. It came to a sudden stop only because we were going uphill, it wasn't level ground." When questioned about how the flight was conducted, the student pilot said: "He's a no-fooling-around guy. He gets up there, he's serious about everything. He's right on the ball, there's never a problem." The flight instructor reported 13,481 hours of flight experience, of which 380 hours were in gliders. Weather reported at Reading, Pennsylvania, 10 miles southwest of Kutztown, at 1345 was: scattered clouds at 20, 000 feet with 40 miles of visibility. The winds were from 320 degrees at 12 knots gusting to 19 knots. The flight instructor flew the glider earlier in the day and experienced '...a lot of lift...' and expected similar conditions for the dual instructional flight. He and the student were released off tow, encountered lift, and climbed to 4,000 feet. There, the glider experienced almost constant sink, as indicated by the variometer, and an off airport landing to hilly terrain was required. The glider experienced a hard landing on ascending terrain. The flight instructor reported 13,481 hours of flight experience, 380 of which was in gliders. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1999_IAD99LA030.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 (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.
- NASA NTRS 2026 · Conference Paper
Computational Analysis of Steady State Aerodynamics of Transonic Truss-Braced Wing Configuration in Deep Stall
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 …
- arXiv 2023 · arXiv preprint
Automating Bird Diverter Installation through Multi-Aerial Robots and Signal Temporal Logic Specifications
This paper tackles the task assignment and trajectory generation problem for bird diverter installation using a fleet of multi-rotors.
- arXiv 2023 · arXiv preprint
Variation of Critical Crystallization Pressure for the Formation of Square Ice in Graphene Nanocapillaries
Two-dimensional square ice in graphene nanocapillaries at room temperature is a fascinating phenomenon and has been confirmed experimentally.
- arXiv 2023 · arXiv preprint
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…
- arXiv 2022 · arXiv preprint
Enhanced Prediction of Three-dimensional Finite Iced Wing Separated Flow Near Stall
Icing on three-dimensional wings causes severe flow separation near stall. Standard improved delayed detached eddy simulation (IDDES) is unable to correctly predict the separating reattaching flow due…
- Embry-Riddle Scholarly Commons 2021 · Journal article (JAAER)
Analysis on the Negative Emotional, Physiological, and Cognitive Responses Elicited from of the Activation of a Stall Alarm
Failing to identify an aerodynamic stall can lead to the inability of an aircraft to sustain flight. To warn pilots of an impending or fully-developed stall, many aircraft have safety devices installe…
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