# NTSB CHI01LA168: Schleicher ASW-20, N76SP, HIghland, IL, June 16, 2001 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: June 16, 2001, 17:00 local (22:00 UTC) - Place: HIghland, IL - Coordinates: 38.730773, -89.689895 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=38.7308&lon=-89.6899&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report November 23, 2001 - Report: Approved by Office Director - Parties: St. Louis FSDO - NTSB case key (mKey): 52528 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI01LA168 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/52528/pdf - Page: https://openairdocs.org/ntsb/CHI01LA168 ## 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 In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Miscellaneous/other, landing - flare/touchdown - checklist - not performed, pilot in command (contributing factor) - spoiler extension - not performed, pilot in command (cause) - airspeed - excessive, pilot in command (contributing factor) - Abrupt maneuver, landing - roll - ground loop/swerve - intentional, pilot in command (cause) - On ground/water encounter with terrain/water, landing - 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](https://openairdocs.org/deregistered/N76SP-2022-02-05), registration cancelled 2022-02-05, S/N 20256 (OpenAirDocs) - Reported make and model: Schleicher ASW-20 - Registry model: [Schleicher ASW-20](https://openairdocs.org/model/schleicher-asw-20) (registry code 3801506) (OpenAirDocs) - Registry engine: [NONE](https://openairdocs.org/engine/none) (registry code 00000, none) (OpenAirDocs) - Category: Glider - Serial number: 20256 - Airframe hours: 1379.66 - 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 ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 78; injuries: none; 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 (OpenAirDocs). - [Accident 20010616011719A](https://openairdocs.org/incident/20010616011719A), Jun 16, 2001: Schler ASW20, Highland, IL, No damage. (-23) The pilot of experimental glider N76SP, a Schweizer ASW-20, on the last flight of the day, decided to land long to finish close to the hangar. On the… From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.