# NTSB SEA00LA161: Stinson 108-3, N573C, Thompson Lake, MT, August 13, 2000 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: August 13, 2000, 12:00 local (18:00 UTC) - Place: Thompson Lake, MT - Coordinates: 48.110919, -114.790161 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=48.1109&lon=-114.7902&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report May 18, 2001 - Report: Approved by Office Director - NTSB case key (mKey): 50015 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA00LA161 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/50015/pdf - Page: https://openairdocs.org/ntsb/SEA00LA161 ## Probable cause An improper flare which lead to a hard landing and subsequent main gear collapse as a result of the overload. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Hard landing, landing - flare - improper, pilot in command (cause) - Main gear collapsed, takeoff - roll/run - landing gear,main gear - overload ## Analysis The pilot reported that when he initially landed the airplane, it touched down hard. The pilot then taxied the airplane without further incident. The pilot stated that when he went to takeoff, during the takeoff ground roll, the right main landing gear collapsed. The right wing and right side elevator contacted the surface and were substantially damaged. Further inspection of the landing gear revealed that the failure occurred at a weld point. The pilot indicated a total time of 1,569 hours on the part. ## Factual narrative On August 13, 2000, about 1200 mountain daylight time, a Stinson 108-3, N573C, registered to and operated by the pilot as a 14 CFR Part 91 personal flight, collapsed the right main landing gear during the takeoff ground roll at Campbell airstrip, Thompson Lake, Montana. Visual meteorological conditions prevailed and no flight plan was filed. The airplane was substantially damaged and the private pilot and his passenger were not injured. The pilot reported that when he initially landed the airplane at the airstrip, it touched down hard. The pilot then taxied the airplane off the airstrip without further incident. The pilot stated that when he went to takeoff, during the takeoff ground roll, the right main landing gear collapsed. The right wing and right side elevator contacted the surface. Further inspection of the gear leg indicated that the failure occurred at a weld point. The pilot indicated on the NTSB Pilot/Operator Aircraft Accident Report Form 6120.1/2, that the part had accumulated approximately 1,569 hours. ## Aircraft - Registration: [N573C](https://openairdocs.org/deregistered/N573C-2024-11-23), registration cancelled 2024-11-23, S/N 108-3573, built 1947 (OpenAirDocs) - Reported make and model: Stinson 108-3 - Registry model: [Universal Stinson 108-3](https://openairdocs.org/model/universal-stinson-108-3) (registry code 9230418) (OpenAirDocs) - Registry engine: [Lycoming 0-435A/0-435C](https://openairdocs.org/engine/lycoming-0-435a-0-435c) (registry code 41517, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 108-3573 - Engines: Lycoming O-435-1 190 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: Harold G. Haselhuhn - Airworthiness certificate: Standard, Normal - Last inspection: Annual, December 8, 1999 - Destination: UNKNOWN - Airport: Campbell, runway 10, 1,900 × ft, grass/turf ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 55; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 200 total, 80 in this make and model, 4 in the last 90 days, 3 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: 300° at 5 knots, gusting 10 - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 81 °F - Altimeter: 29.00 inHg ## 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 20000813011609A](https://openairdocs.org/incident/20000813011609A), Aug 13, 2000: Univar 1083, Campbee, MT, No damage. (-23) Pilot stated that left main gear collapsed during an aborted takeoff. He stated that he realized during the takeoff roll that the density altitude was… ## Other investigations on N573C (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 UNK64X2261](https://openairdocs.org/ntsb/UNK64X2261), Jun 13, 1964: Stinson 108-3 (N573C), Silver City, NM, substantial damage 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.