# NTSB CHI04CA200: Schweizer SGS 2-33, N33950, Warrensburg, MO, July 29, 2004 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: July 29, 2004, 10:15 local (15:15 UTC) - Place: Warrensburg, MO - Coordinates: 38.784168, -93.80278 - Nearby events: https://openairdocs.org/map.md?lat=38.7842&lon=-93.8028&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report June 28, 2006 - Report: Approved by Office Director - NTSB case key (mKey): 59942 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI04CA200 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/59942/pdf - Page: https://openairdocs.org/ntsb/CHI04CA200 ## Probable cause The pilot's inadequate compaensation for the winds, and his inability to maintain directional control of the glider after encountering tall grass during the landing roll. The reported wind gust, tall grass, and the fence were contributing factors. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - On ground/water encounter with terrain/water, landing - roll - weather condition - gusts (contributing factor) - compensation for wind conditions - inadequate, pilot in command (cause) - terrain condition - high vegetation (contributing factor) - Loss of control - on ground/water, landing - roll - directional control - not possible, pilot in command (cause) - On ground/water collision with object, landing - roll - object - fence (contributing factor) ## Analysis The glider impacted a fence during landing following a simulated towline break. The pilot reported that during the landing a gust of wind raised the right wing of the glider causing the left wing to contact the ground. The pilot reported that due to the 8 to 10 inch tall grass the glider veered to the left. The glider subsequently impacted a barbed-wire fence. ## Factual narrative On July 29, 2004, about 1015 central daylight time, a Schweizer SGS 2-33 glider, N33950, piloted by a private pilot and designated pilot examiner, received substantial damage during landing after simulating a towline break on initial climb after takeoff. The glider was landing on the turf adjacent to runway 36 at the Skyhaven Airport near Warrensburg, Missouri. The 14 CFR Part 91 flight was operating in visual meteorological conditions without a flight plan. No injuries were reported. The local flight was originating at the time of the accident. The pilot reported that during the takeoff the examiner released the glider from the tow-plane to simulate a towline break. He stated that the release was made about 200 feet above the ground. The pilot reported that during the subsequent landing, a gust of wind raised the right wing of the glider causing the left wing to contact the ground. The pilot reported that due to the 8 to 10 inch tall grass the glider veered to the left. The glider subsequently impacted a barbed-wire fence. ## Aircraft - Registration: [N33950](https://openairdocs.org/deregistered/N33950-2008-01-10), registration cancelled 2008-01-10, S/N 380, built 1975 (OpenAirDocs) - Reported make and model: Schweizer SGS 2-33 - Registry model: [Schweizer SGS 2-33A](https://openairdocs.org/model/schweizer-sgs-2-33a) (registry code 8051606) (OpenAirDocs) - Registry engine: [NONE](https://openairdocs.org/engine/none) (registry code 00000, none) (OpenAirDocs) - Category: Glider - Serial number: 380 - Airframe hours: 2885 - Damage: Substantial damage - Flight: Flight test, Part 91 - Registered owner: Central Missouri State University - Airworthiness certificate: Standard, Normal - Last inspection: Annual, April 26, 2004 - Departed: 9K4, Warrensburg, MO ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 22; injuries: none; private; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; last flight review May 18, 2003; flight hours: 213 total, 11 in this make and model, 173 as pilot in command, 12 in the last 90 days, 5 in the last 30 days, 1 in the last 24 hours - Check pilot; age 64; injuries: none; airline transport, commercial; airplane ratings: multi-engine land, single-engine land, single-engine sea; instrument ratings: airplane ## Weather - Conditions: Visual (VMC), Day ## 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 20040729017569A](https://openairdocs.org/incident/20040729017569A), Jul 29, 2004: Scwzer SGS233A, Warrensburg, MO, Substantial damage. (-23) The pilot was performing a required downwind landing on a private pilot practical test. During the landing, a gusting right quartering tailwind lifted… ## Other investigations on N33950 (1) 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. - [NTSB CHI07CA232](https://openairdocs.org/ntsb/CHI07CA232), Jul 26, 2007: Schweizer SGS 2-33A (N33950), Warrensburg, MO, substantial damage. Probable cause: The flight instructor's failure to maintain adequate airspeed and aircraft control, which resulted in a stall while on final approach. A factor in the accident were the two fences. 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.