# NTSB SEA04LA017: Cessna 150C, N7934Z, Toledo, WA, November 10, 2003 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: November 9, 2003, 16:00 local (Nov 10, 2003, 00:00 UTC) - Place: Toledo, WA - Coordinates: 46.466667, -122.811386 - Nearby events: https://openairdocs.org/map.md?lat=46.4667&lon=-122.8114&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 2, 2004 - Report: Approved by Office Director - Parties: FAA-FSDO - NTSB case key (mKey): 58357 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA04LA017 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/58357/pdf - Page: https://openairdocs.org/ntsb/SEA04LA017 ## Probable cause Failure of the main landing gear attachment during the landing roll. An inadequate maintenance modification was a factor. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Gear collapsed, landing - roll - landing gear,main gear attachment - failure (cause) - maintenance,modification - inadequate, other maintenance personnel (contributing factor) ## Analysis The purpose of the flight was for the commercial pilot, the owner who recently purchased this aircraft, to get a tailwheel endorsement and flight review. After completing some air work, the flight returned to the airport to practice landings. The commercial pilot was at the controls for the full stall landing. The aircraft touched down straight, then started a slight turn to the right. The commercial pilot called for the instructor to take control, which he did. Corrective inputs were unsuccessful to realign the aircraft to runway heading. The left main landing gear eventually failed and separated from the structure. The aircraft came to rest on the side of the runway with the left wing contacting the surface. Inspection of the left main landing gear found that two wedges were missing and that the retaining screws were 1/8 of an inch further out than the right side, where the wedges were still in place. ## Factual narrative On November 9, 2003, approximately 1600 Pacific standard time, a tail-wheel equipped Cessna 150C, N7934Z, registered to and operated by the pilot as a 14 CFR Part 91 instructional flight, collapsed the left main landing gear during the landing roll at the Toledo-Winlock Airport, Toledo, Washington. Visual meteorological conditions prevailed at the time and no flight plan was filed for the local flight. The aircraft was substantially damaged and the flight instructor and commercial pilot were not injured. During a telephone interview and subsequent written statements from both the commercial pilot and flight instructor if was reported that the purpose of the flight was instruction for the commercial pilot to attain the tail wheel endorsement and a flight review. The commercial pilot just purchased this aircraft and this was the first flight. Both pilots reported that after accomplishing air work, the flight returned to the airport to accomplish landings. The instructor stated that the commercial pilot was at the controls for the full stall landing to runway 23. The aircraft touched down straight then started a slight turn to the right. The commercial pilot called for the instructor to take control, which he did. Corrective inputs were unsuccessful to realign the aircraft to runway heading. The left main landing gear eventually failed and separated from the structure. The aircraft came to rest on the side of the runway with the left wing contacting the surface. Inspection of the aircraft for damage revealed that the fuselage was twisted at the door post and there were wrinkles in the fuselage skin, the firewall was damaged, and the left main landing gear was pulled out of the gear box. Inspection of the left main landing gear by a Federal Aviation Administration Inspector from the Seattle, Washington, Flight Standards District Office, found that the wedges, part number 0410023-2 (2 each) were missing. The inspector further reported that the retaining screws were 1/8 of an inch further out than the right side, where the wedges were still in place. Maintenance records indicated that this aircraft had been converted by a supplemental type certificate (STC) to a tail-wheel configuration just prior to the commercial pilot's purchase of the aircraft and his first flight. An annual inspection had been accomplished on April 28, 2003, and approximately 9 hours had been accumulated on the aircraft since the inspection. ## Aircraft - Registration: [N7934Z](https://openairdocs.org/aircraft/N7934Z), registered now, S/N 15060034, built 1963 (OpenAirDocs) - Reported make and model: Cessna 150C - Registry model: [Cessna 150C](https://openairdocs.org/model/cessna-150c) (registry code 2071808) (OpenAirDocs) - Registry engine: [Continental 0-200 series](https://openairdocs.org/engine/continental-0-200-series) (registry code 17020, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 15060034 - Airframe hours: 1800 - Engines: Lycoming O-320 E2D 150 horsepower reciprocating - Damage: Substantial damage - Flight: Instructional, Part 91 - Registered owner: Steven D. Brockman - Airworthiness certificate: Standard, Normal - Last inspection: Annual, April 28, 2003, 9 hours before - Departed: TDO, Toledo, WA - Airport: TDO, Toledo-Winlock, runway 230, 4,960 × 150 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Flight instructor; age 68; injuries: none; commercial, flight instructor; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 3, valid medical--w/ waivers/lim; last flight review March 24, 2002; seat: right; flight hours: 2,848 total, 253 in this make and model, 2,669 as pilot in command, 9 in the last 90 days, 2 in the last 30 days - Pilot; injuries: none ## Weather - Conditions: Visual (VMC), Day - Wind: calm - Visibility: 55 statute miles - Lowest ceiling: none - Temperature: 59 °F, dew point 46 °F - Altimeter: 29.94 inHg - Observed at: TDO ## 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 20031109030179A](https://openairdocs.org/incident/20031109030179A), Nov 9, 2003: Cessna 150C, Toledo, WA, Substantial damage. (-23) This aircraft was purchased from the previous owner on 10-23-2003. It was delivered to Mr. Brockman, the current owner, at the Toledo, WA airport. This… 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.