# NTSB investigations: Attach fittings (on wing) NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports. ## Latest cases - [NTSB WPR26LA203](https://openairdocs.org/ntsb/WPR26LA203.md): Pzl-Swidnik PW-5 · Soap Lake, WA · Accident · No injuries · Class 4 · Limited · Final report · May 23, 2026 · N157AJ · Substantial damage > The pilot’s failure to ensure the proper preflight assembly of the glider's wing attachment system, which resulted in substantial damage to the wing structure during flight. - [NTSB ERA24FA395](https://openairdocs.org/ntsb/ERA24FA395.md): Evolution Revo · Zephyrhills, FL · Accident · 2 fatal · Class 3 · Field · Final report · Sep 25, 2024 · N889HT · Destroyed > The flight instructor’s failure to ensure the haul back cable was securely connected to the “J” hook prior to departing on the accident flight, which resulted in the cable becoming disconnected and the wings folding up during flight. - [NTSB ERA23FA007](https://openairdocs.org/ntsb/ERA23FA007.md): Seamax M-22 · East Hampton, NY · Accident · 1 fatal · Class 3 · Field · Final report · Oct 6, 2022 · N46PD · Substantial damage > An inflight separation of the right wing as a result of the manufacturer’s application of a bolt and nut in the upper wing strut attachment point that was inconsistent with the nut design intent and usage limitations. - [NTSB ERA22FA320](https://openairdocs.org/ntsb/ERA22FA320.md): Knight AA Nieuport 28 · Basehor, KS · Accident · 1 fatal · Class 3 · Field · Final report · Jul 18, 2022 · N6170 · Destroyed > The pilot’s incorrect installation of the left-wing strut, which resulted in a loss of airplane control during takeoff and a subsequent aerodynamic stall and spin from which the pilot could not recover. - [NTSB CEN21LA420](https://openairdocs.org/ntsb/CEN21LA420.md): Quad City Ultralight Challenger II · Rogers City, MI · Accident · Minor injuries · Class 3 · Limited · Final report · Sep 11, 2021 · N778H · Substantial damage > The separation of the right wing’s forward lift strut from the fuselage due to a missing nylon-insert lock nut. Contributing to the accident was the noncertificated pilot’s decision to operate the airplane even though a condition inspection had not been… - [NTSB CEN21FA314](https://openairdocs.org/ntsb/CEN21FA314.md): PZL Mielec M18 · Seiling, OK · Accident · 1 fatal · Class 3 · Field · Final report · Jul 12, 2021 · N9310R · Destroyed > The pilot’s in-flight loss of control due to the structural failure of a wing fitting and separation of the outboard wing section. Also causal were the inadequate wing fitting inspections, which failed to detect the initial corrosion and crack before it… - [NTSB WPR20LA004](https://openairdocs.org/ntsb/WPR20LA004.md): Glaser Dirks DG500 · Marana, AZ · Accident · Minor injuries · Class 3 · Limited · Final report · Oct 6, 2019 · N600TT · Substantial damage > The pilots’ exceedance of the glider’s never-exceed speed (VNE) during recovery from an intentional aerobatic maneuver, which resulted in a failure of the right-wing air brake control drive, asymmetrical air brake deployment, and a subsequent hard landing. - [NTSB CEN18FA282](https://openairdocs.org/ntsb/CEN18FA282.md): Fisher Celebrity · Patriot, IN · Accident · 1 fatal · Field investigation · Final report · Jul 19, 2018 · N228LC · Destroyed > An in-flight separation of the right wing due to upward and rearward bending that led to an overstress fracture. The reason for the upward and rearward bending could not be determined based on the available information. - [NTSB WPR18FA143](https://openairdocs.org/ntsb/WPR18FA143.md): I.C.A.-Brasov IS 29D · Avenal, CA · Accident · 1 fatal · Field investigation · Final report · May 19, 2018 · N38ES · Destroyed > The pilot's improper installation of the wings onto the glider, which resulted in an in-flight wing separation. Contributing to the accident were the pilot's limited familiarity with the design and a lack of reliable assembly guidance. - [NTSB ERA17FA265](https://openairdocs.org/ntsb/ERA17FA265.md): North Wing Freedom · Green Township, NJ · Accident · 1 fatal · Field investigation · Final report · Aug 6, 2017 · N2854L · Substantial damage > The pilot's improper preflight setup of the aircraft's foldable wing, during which he incorrectly attached a nylon strap loop pull handle, instead of the steel cable shackle at the end of the strap, to its mounting hook. The nylon strap failed in flight,… - [NTSB ERA17FA038](https://openairdocs.org/ntsb/ERA17FA038.md): Quad City Challenger · Crescent City, FL · Accident · 2 fatal · Field investigation · Final report · Nov 9, 2016 · N327SH · Destroyed > An abrupt pitch-up maneuver following a descent, which resulted in the in-flight separation of the right wing due to the overload failure of both the forward and aft right wing attachment brackets. - [NTSB GAA17CA004](https://openairdocs.org/ntsb/GAA17CA004.md): Airborne Windsports PTY Edge XT 912 L · Fort Valley, GA · Accident · Serious injuries · Data collection · Final report · Oct 2, 2016 · N53AW · Substantial damage > The failure of the aircraft’s right overcenter washout strut split ring, which resulted in the pilot’s inability to maintain lateral control of the aircraft and subsequent ground impact. - [NTSB ERA16LA209](https://openairdocs.org/ntsb/ERA16LA209.md): WSK PZL Mielec M 18A · Brunswick, NC · Accident · 1 fatal · Limited investigation · Final report · Jun 10, 2016 · N2283M · Destroyed > The failure of the right wing due to a fatigue fracture of the right outboard wing forward spar lower fitting. Contributing to the accident was the routine operation of the airplane over its certificated maximum gross weight and the operator's improper or… - [NTSB CEN15LA399](https://openairdocs.org/ntsb/CEN15LA399.md): Weatherly 620B · Hancock, WI · Accident · 1 fatal · Limited investigation · Final report · Aug 26, 2015 · N2005C · Destroyed > The in-flight failure of the left wing lower forward attach point under normal loading conditions due to corrosion and fatigue cracking in the center section hinge brackets. Contributing to the accident was the operator's inadequate maintenance and overweight… - [NTSB ERA13LA221](https://openairdocs.org/ntsb/ERA13LA221.md): Aeronca 11AC · Hoosick Falls, NY · Accident · Serious injuries · Limited investigation · Final report · Apr 28, 2013 · N3503E · Substantial damage > The failure of the left wing attachment bracket weld due to inadequate welding by unknown maintenance personnel. - [NTSB ERA13LA199](https://openairdocs.org/ntsb/ERA13LA199.md): Maxfly Inc/Mckay WM Searey · Polk City, FL · Accident · Minor injuries · Limited investigation · Final report · Apr 11, 2013 · N914WM · Substantial damage > The improper installation of incorrect attachment hardware by maintenance personnel during an undocumented repair, which resulted in an in-flight structural failure and subsequent loss of aircraft control. Contributing to the accident was the covering of the… - [NTSB CEN11IA280](https://openairdocs.org/ntsb/CEN11IA280.md): Beech 90B · Chickasha, OK · Incident · No injuries · Incident investigation · Final report · Apr 11, 2011 · N37OU · Minor damage > The mechanic's improper installation of the aileron. - [NTSB CEN10LA339](https://openairdocs.org/ntsb/CEN10LA339.md): Airborne Windsport Edge · Ft. Lupton, CO · Accident · 1 fatal · Limited investigation · Final report · Jun 23, 2010 · N55857 · Substantial damage > The pilot intentionally performed prohibited aerobatic maneuvers that damaged the carriage wing attachment hang point and collapsed the wing. - [NTSB WPR10LA275](https://openairdocs.org/ntsb/WPR10LA275.md): Airborne Windsports PTY Edge X · Alturas, CA · Accident · Minor injuries · Limited investigation · Final report · Jun 2, 2010 · N354MB · Substantial damage > Fracture of a mast support cable due to corrosion, which resulted in a loss of control during the landing roll. - [NTSB ERA09FA273](https://openairdocs.org/ntsb/ERA09FA273.md): Explorer Aeronautique Ecoflyer · Lebanon, NY · Accident · 1 fatal · Field investigation · Final report · Apr 27, 2009 · C-IOFL · Substantial damage > The in-flight separation of the left wing due to failure of one of the inboard attachments to the fuselage. - [NTSB ERA09LA244](https://openairdocs.org/ntsb/ERA09LA244.md): De Havilland DHC2 · Plattsburgh, NY · Accident · No injuries · Limited investigation · Final report · Apr 12, 2009 · N258PA · Substantial damage > The pilot's improper application of brakes during the landing rollout. ## The whole list in SQL Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS: ```sql SELECT c."ntsbNumber", c."eventDate", c."eventType", c."eventCity", c."eventStateOrRegion", a.n_number, a."aircraftMake", a."aircraftModel", c."highestInjuryLevel", c."totalFatal", c."completionStatus", c.report_url FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c."mKey" AND a.position = 1 WHERE c."mKey" IN (SELECT f.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_findings.parquet' f WHERE starts_with(f."findingCode", '01035740')) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb-findings/01035740/cases --- 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.