ERA25LA354

NTSB accident investigation · Jonker Sailplanes JS3 · New Castle, VA · September 13, 2025

Accident · No injuriesClass 4 · LimitedFinal report
Date
September 13, 2025, 13:52 local (17:52 UTC)
Place
New Castle, VA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N68MFJonker Sailplanes JS3
Defining event
Approach: Miscellaneous/other
Weather
Visual (VMC) · Day
Status
Completed · report December 4, 2025
Report
Approved by Office Director
Investigation class
Class 4 - Basic report with no Prelim publish
NTSB office
Eastern Region Aviation
Parties
FAA/FSDO
FAA report
20250913012779A
Case key
201045

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

The pilot’s failure to properly configure the glider for landing, which resulted in an excessive descent rate during approach, and subsequent collision with trees short of the intended landing area.

Findings · 2

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Action: forgotten action/omissionPersonnel issues › Action/decision · PilotJonker Sailplanes JS3: 1 caseAll aircraft: 440 casesProbable cause
Performance/control parameters: configurationAircraft › Aircraft oper/perf/capability · Incorrect use/operationJonker Sailplanes JS3: 1 caseAll aircraft: 80 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

The pilot of the turbine powered (jet sustainer) motorglider reported that during descent to the airport, he deployed and operated the jet sustainer for 90 seconds. After turning off the jet sustainer, the pilot forgot to stow it, resulting in increased drag. After entering the traffic pattern, the pilot configured the glider for landing by extending the flaps and landing gear, but the jet sustainer remained extended. The pilot noticed a sink rate in excess of normal, and attempted to resolve the condition by reducing flaps, but inadvertently placed the flaps in the full negative position, which deployed the spoilers and increased the sink rate further. He continued in the airport traffic pattern; however, during the base leg to final leg turn, he realized that impact with a tree line was likely and decided to level the wings to make contact with the trees in a controlled fashion. The glider subsequently impacted the trees resulting in substantial damage to its right wing. The pilot stated that there were no preimpact mechanical malfunctions with the glider.

Aircraft

Registration
N68MF
Reported as
Jonker Sailplanes JS3
Category
Glider
Serial number
03-136
Built
2022
Airframe hours
132.6
Engine
Md-Flugzeugbau MD-TJ42, 78 lbs thrust, turbo jet
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Condition · December 13, 2024
Airport
VA85 · New Castle Intl, runway 36, 2,400 × 100 ft, grass/turf
Equipment
ADS-B, Satellite tracking device

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
73
Injuries
None
Certificate
Private
Last flight review
December 23, 2024
Seat
Single
Restraint
4-point
Flight hours
421 total · 55.5 in this make and model · 322 as pilot in command · 18 in the last 90 days · 3 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
180° at 4 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
79 °F, dew point 52 °F
Altimeter
30.17 inHg
Observed at
ROA, 12 nm away
METAR
KROA 131754Z 18004KT 10SM FEW050 26/11 A3017 RMK AO2 SLP205 T02560111 10256 20128 58019=

Docket · 4

The files NTSB released with the investigation on December 4, 2025, on NTSB’s docket system: statements, records, photos and specialists’ reports. 5.4 MB in all.

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.