CHI01LA168

NTSB accident investigation · Schleicher ASW-20 · HIghland, IL · June 16, 2001

Accident · No injuriesLimited investigationFinal report
Date
June 16, 2001, 17:00 local (22:00 UTC)
Place
HIghland, IL
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N76SPSchleicher ASW-20
Weather
Visual (VMC) · Day
Status
Completed · report November 23, 2001
Report
Approved by Office Director
Parties
St. Louis FSDO
FAA report
20010616011719A
Case key
52528

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

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Probable cause

The pilot's failure to extend the spoilers during landing approach, which resulted in a touchdown at a higher than normal airspeed. An additional cause was the intentional ground loop/swerve maneuver performed by the pilot to avoid overrunning the end of the runway. Factors to the accident were the landing checklist not being performed by the pilot and the excessive airspeed encountered during the landing.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Miscellaneous/otherLanding - flare/touchdown
Checklist - not performedPilot in commandFactor
Spoiler extension - not performedPilot in commandCause
Airspeed - excessivePilot in commandFactor
Abrupt maneuverLanding - roll
Ground loop/swerve - intentionalPilot in commandCause
On ground/water encounter with terrain/waterLanding - roll

Analysis

The glider sustained substantial damage during landing. According to the pilot, he unintentionally performed a no-spoiler approach to runway 18, and crossed the threshold at a higher than normal airspeed. The pilot reported that he performed an intentional ground loop to avoid overrunning the end of the runway, causing substantial damage to the glider. According to the pilot's written statement, he believes that he may have mistaken the landing gear lever for the spoiler deploying lever. The pilot reported that, "I firmly believe if I would have used a landing check list this situation probably would not have happened."

Factual narrative

On June 16, 2001, at 1700 central daylight time, a Schleicher ASW-20, N76SP, sustained substantial damage during landing on runway 18 (2,660 feet by 200 feet, dry/turf) at Highland-Winet Airport, Highland, Illinois. Visual meteorological conditions prevailed at the time of the accident. The personal flight was operating under the provisions of 14 CFR Part 91 and was not on a flight plan. The pilot, the sole occupant, did not sustain any injuries. The local flight departed the Highland-Winet Airport at 1615 and was landing at the time of the accident.

According to the pilot, he unintentionally performed a no-spoiler approach to runway 18, and crossed the threshold at a higher than normal airspeed. The pilot reported that he performed an intentional ground loop to avoid overrunning the end of the runway. While the pilot was performing the ground loop the right wing tip impacted the terrain causing substantial damage to the glider.

According to the pilot's written statement, he believes that he may have mistaken the landing gear lever for the spoiler deploying lever. The pilot reported that, "I firmly believe if I would have used a landing check list this situation probably would not have happened."

Aircraft

Registration
N76SP
Reported as
Schleicher ASW-20
Category
Glider
Serial number
20256
Airframe hours
1,379.66
Engine
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Clifford Crader
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · November 1, 2000 · 56.42 hours before
Departed
H07 · HIghland, IL
Destination
HIghland, IL
Airport
H07 · Highland - Winet Airport, runway 36, 2,600 × 200 ft, grass/turf

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
78
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Last flight review
March 15, 2000
Seat
Single
Flight hours
3,557 total · 445 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
270° at 14 knots
Visibility
7 statute miles
Temperature
93 °F, dew point 55 °F
Altimeter
30.12 inHg
Observed at
BLV, 17 nm away

FAA reports on this event · 1

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