# NTSB CHI06CA142: Stys T-Bird Sport, N391T, West Bend, WI, May 30, 2006 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: May 29, 2006, 20:15 local (May 30, 2006, 01:15 UTC) - Place: West Bend, WI - Coordinates: 43.421943, -88.127777 - Nearby events: https://openairdocs.org/map.md?lat=43.4219&lon=-88.1278&mi=10 - Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report October 3, 2006 - Report: Approved by Office Director - NTSB case key (mKey): 63922 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI06CA142 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/63922/pdf - Page: https://openairdocs.org/ntsb/CHI06CA142 ## Probable cause The loss of engine power for undetermined reasons and the pilot's failure to maintain airspeed which resulted in a stall. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of engine power, approach - vfr pattern - final approach - reason for occurrence undetermined (cause) - Forced landing, descent - emergency - Loss of control - in flight, descent - emergency - airspeed - low, pilot in command (cause) - stall - encountered, pilot in command - In flight collision with object, descent - emergency - object - tree(s) (contributing factor) - In flight collision with terrain/water, emergency descent/landing - terrain condition - ground ## Analysis The amateur-built light sport aircraft sustained substantial damage during a forced landing to a baseball field after a complete loss of engine power while turning from base leg to the final approach for landing. The pilot reported that the two-cycle engine rpm slowed to 3,500 rpm for a few seconds and then stopped. The altitude was about 300 - 400 feet above ground level (agl), and he was unable to make it to the runway. The pilot reported that there was 1/4 tank of fuel in the right tank and less fuel in the left tank. He attempted to land in a baseball field, but was "unable to retain directional control" as the airplane cleared the obstructions to the field. The pilot reported that the left wing "dipped" and the airplane impacted bushes and trees. The inspection of the engine revealed that it did not seize. No deficiencies were found that would have precluded normal engine operation. ## Factual narrative The amateur-built light sport aircraft sustained substantial damage during a forced landing to a baseball field after a complete loss of engine power while turning from base leg to the final approach for landing. The pilot reported that the two-cycle engine rpm slowed to 3,500 rpm for a few seconds and then stopped. The altitude was about 300 - 400 feet above ground level (agl), and he was unable to land on the runway. The pilot reported that there was 1/4 tank of fuel in the right tank and less fuel in the left tank. He attempted to land in a baseball field, but was "unable to retain directional control" as the airplane cleared the obstructions to the field. The pilot reported that the left wing "dipped" and the airplane impacted bushes and trees. The inspection of the engine revealed that it did not seize. No deficiencies were found that would have precluded normal engine operation. ## Aircraft - Registration: [N391T](https://openairdocs.org/deregistered/N391T-2018-05-30), registration cancelled 2018-05-30, S/N 0001, built 2005 (OpenAirDocs) - Reported make and model: STYS T-Bird Sport - Registry model: [Stys Sylvester J T-BIRD SPORT](https://openairdocs.org/model/stys-sylvester-j-t-bird-sport) (registry code 0590062) (OpenAirDocs) - Registry engine: [Rotax SEE BOMBADIER](https://openairdocs.org/engine/rotax-see-bombadier) (registry code 55555, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 0001 - Engines: Rotax 582 reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: Sylvester J. Stys - Departed: ETB, West Bend, WI - Airport: ETB, West Bend Municipal Airport ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 51; sport pilot; airplane ratings: single-engine land; instrument ratings: airplane; medical: sport pilot; flight hours: 379 total, 10 in this make and model, 287 as pilot in command, 9 in the last 90 days, 3 in the last 30 days, 1 in the last 24 hours ## 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 20060529008379A](https://openairdocs.org/incident/20060529008379A), May 29, 2006: Amtr TBIRDSPORT, West Bend, WI, Substantial damage. (-23) The pilot noticed that one of two twin fuel tanks was lower then the other one. Both tanks feed the engine at the same time with no selector valve. He… 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.