ERA26LA199

NTSB accident investigation · Alexander Schleicher ASW 27-18 · Greenwood, SC · April 20, 2026

Accident · No injuriesClass 4 · LimitedFinal report
Date
April 20, 2026, 14:30 local (18:30 UTC)
Place
Greenwood, SC · open field
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N27CUAlexander Schleicher ASW 27-18
Defining event
Enroute-cruise: Loss of lift
Weather
Visual (VMC) · Day
Status
Completed · report June 17, 2026
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
20260420006739A
Case key
202950

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 glider pilot’s encounter with a strong sink/loss of lift, which resulted in a forced landing to unsuitable terrain.

Findings · 4

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.

Temp/humidity/pressure: thermal liftingEnvironmental issues › Conditions/weather/phenomena · Not specifiedAlexander Schleicher ASW 27-18: 1 caseAll aircraft: 53 casesProbable cause
Wind: downdraftEnvironmental issues › Conditions/weather/phenomena · Effect on operationAlexander Schleicher ASW 27-18: 3 casesAll aircraft: 178 casesProbable cause
Performance/control parameters: altitudeAircraft › Aircraft oper/perf/capability · Attain/maintain not possibleAlexander Schleicher ASW 27-18: 3 casesAll aircraft: 1,310 casesProbable cause
Terrain: sloped/uneven terrainEnvironmental issues › Physical environment · Contributed to outcomeAlexander Schleicher ASW 27-18: 1 caseAll aircraft: 270 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 glider pilot reported that he was participating in a racing competition. He was able to find thermals up to 7,000 ft mean sea level (msl) and later could not climb higher than 4,500 ft msl. At that time, the glider was about 20 miles from his intended destination, which the pilot thought he could reach; however, the glider subsequently encountered a strong sink, and he could not find any more thermals. Unable to glide to an airport, he attempted a forced landing to a field. During the forced landing, the left wing contacted a swale in the middle of the field. The glider spun, the tailboom also contacted the swale and separated, and the glider came to rest upright. The pilot also reported that there were no preimpact mechanical malfunctions with the glider that would have precluded normal operation.

Aircraft

Registration
N27CU
Reported as
Alexander Schleicher ASW 27-18
Category
Glider
Serial number
29058
Built
2010
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special)
Departed
SC95 · Perry, SC
Equipment
Data recorder

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
Airplane ratings
Single-engine sea
Medical
Class 3, With waivers/limitations
Last flight review
April 5, 2025
Seat
Single
Restraint
4-point
Flight hours
1,933 total · 1,171 in this make and model · 39 in the last 90 days · 17 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Visibility
10 statute miles
Lowest ceiling
None
Temperature
72 °F, dew point 34 °F
Altimeter
30.24 inHg
Observed at
GRD, 7 nm away
METAR
METAR KGRD 201856Z AUTO 10SM CLR 22/01 A3024 RMK AO2 SLP238 T02220006

Docket · 2

The files NTSB released with the investigation on June 17, 2026, on NTSB’s docket system: statements, records, photos and specialists’ reports. 5.8 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.