# Main frame (on wing)

- Type: NTSB finding subsection
- Path: [Aircraft](https://openairdocs.org/ntsb-findings/01) › [Aircraft structures](https://openairdocs.org/ntsb-findings/0103) › [Wing structure](https://openairdocs.org/ntsb-findings/010357) › Main frame (on wing)
- NTSB code: 01035710
- Cases: 8
- In the probable cause: 8
- Fatal cases: 6
- All cases: https://openairdocs.org/ntsb-findings/01035710/cases.md
- Cases with it in the probable cause: https://openairdocs.org/ntsb-findings/01035710/cases.md?cause=1
- Page: https://openairdocs.org/ntsb-findings/01035710

## Cases per year (in the probable cause / all)

- 2010: 1 / 1
- 2012: 1 / 1
- 2014: 1 / 1
- 2016: 2 / 2
- 2018: 1 / 1
- 2019: 1 / 1
- 2024: 1 / 1

## Defining events in these cases

- [Aircraft structural failure](https://openairdocs.org/ntsb-events/337): 4 cases
- [Loss of control in flight](https://openairdocs.org/ntsb-events/240): 2 cases
- [Inflight upset](https://openairdocs.org/ntsb-events/271): 1 cases
- [Abrupt maneuver](https://openairdocs.org/ntsb-events/270): 1 cases

## Aircraft models (registry)

- [Beech 65-A90](https://openairdocs.org/model/beech-65-a90): 1 cases
- [Beech B36TC](https://openairdocs.org/model/beech-b36tc): 1 cases
- [Beech 35](https://openairdocs.org/model/beech-35): 1 cases
- [Facebook UK AQUILA 1A](https://openairdocs.org/model/facebook-uk-aquila-1a): 1 cases
- [Airborne Windsports PTY XT-912-L](https://openairdocs.org/model/airborne-windsports-pty-xt-912-l): 1 cases
- [Caughran Terry FLIGHTSTAR II](https://openairdocs.org/model/caughran-terry-flightstar-ii): 1 cases

## Other findings in the same cases

- [Decision making/judgment](https://openairdocs.org/ntsb-findings/02041520) (Personnel issues): 3 cases
- [Below VFR minima](https://openairdocs.org/ntsb-findings/03035075) (Environmental issues): 2 cases
- [Aircraft control](https://openairdocs.org/ntsb-findings/02063040) (Personnel issues): 2 cases
- [Oversight of maintenance](https://openairdocs.org/ntsb-findings/04032020) (Organizational issues): 1 cases
- [Oversight of operation](https://openairdocs.org/ntsb-findings/04032015) (Organizational issues): 1 cases
- [Initial training](https://openairdocs.org/ntsb-findings/04031010) (Organizational issues): 1 cases
- [Safety](https://openairdocs.org/ntsb-findings/04024010) (Organizational issues): 1 cases
- [Adequacy of policy/proc](https://openairdocs.org/ntsb-findings/04021015) (Organizational issues): 1 cases
- [Thunderstorm](https://openairdocs.org/ntsb-findings/03033010) (Environmental issues): 1 cases
- [Convective turbulence](https://openairdocs.org/ntsb-findings/03032020) (Environmental issues): 1 cases

## Newest cases

- [NTSB ERA24LA185](https://openairdocs.org/ntsb/ERA24LA185), Apr 19, 2024: Bailey-Moyes Dragonfly (UNREG), Groveland, FL, substantial damage, 1 fatal. Probable cause: The pilot’s improper installation and inspection of the right lower wing strut attachment bolt, which resulted in the inflight failure of the right wing.
- [NTSB WPR19MA177](https://openairdocs.org/ntsb/WPR19MA177), Jun 22, 2019: Beech 65-A90 (N256TA), Mokuleia, HI, destroyed, 11 fatal. Probable cause: The pilot’s aggressive takeoff maneuver, which resulted in an accelerated stall and subsequent loss of control at an altitude that was too low for recovery. Contributing to the accident were (1) the…
- [NTSB WPR18LA121](https://openairdocs.org/ntsb/WPR18LA121), Apr 15, 2018: Airborne Windsports PTY XT-912-L (N107PW), Peoria, AZ, substantial damage. Probable cause: An inflight loss of control due to failure of the weight-shift-control aircraft's wing assembly.
- [NTSB DCA16CA197](https://openairdocs.org/ntsb/DCA16CA197), Jun 28, 2016: Facebook UK Aquila (N565AQ), Yuma, AZ, substantial damage. Probable cause: a structural failure of the wing as a result of exceeding the airspeed envelope due to wind gusts which were beyond the capabilities of the autopilot. Contributing to the accident was an insufficient…
- [NTSB ERA16FA089](https://openairdocs.org/ntsb/ERA16FA089), Jan 14, 2016: Caughran Terry Flightstar II (N82652), Wake, VA, substantial damage, 1 fatal. Probable cause: Failure of the left wing in flight due to compression loading from wing loads combined with preexisting damage.
- [NTSB CEN14LA419](https://openairdocs.org/ntsb/CEN14LA419), Aug 11, 2014: Evolution Trikes Revo (N214EV), South Haven, MI, substantial damage, 1 fatal. Probable cause: The noninstrument-rated pilot’s decision to continue visual flight into instrument meteorological conditions, which resulted in his loss of aircraft control and the resultant overstress and in-flight…
- [NTSB CEN12FA196](https://openairdocs.org/ntsb/CEN12FA196), Mar 21, 2012: Beech 35 (N3871N), Glencoe, MN, substantial damage, 3 fatal. Probable cause: The non-instrument-rated pilot’s continued flight into instrument meteorological conditions, which resulted in the design limits of the airplane being exceeded and an in-flight breakup.
- [NTSB ERA11FA036](https://openairdocs.org/ntsb/ERA11FA036), Oct 26, 2010: Beech B36TC (N8045Y), Rienzi, MS, substantial damage, 2 fatal. Probable cause: The pilot's continued flight into known adverse weather conditions. Contributing to the accident was the air traffic controller's failure to provide precipitation information to the pilot as required.

NTSB has coded findings and defining events since 2008; earlier cases used its older occurrence and cause codes and aren't counted.

Findings: https://openairdocs.org/ntsb-findings.md. Defining events: https://openairdocs.org/ntsb-events.md. Phases of flight: https://openairdocs.org/ntsb-phases.md. Every investigation, filtered by finding, event, phase, state, year or model: https://openairdocs.org/ntsb.md (for example ?state=MI&fatal=1).

NTSB's definitions: Accident and incident, 49 CFR 830.2 (https://www.ecfr.gov/current/title-49/subtitle-B/chapter-VIII/part-830/subpart-A/section-830.2), CICTT occurrence categories (PDF) (https://www.ntsb.gov/safety/data/Documents/datafiles/OccurrenceCategoryDefinitions.pdf), CICTT phases of flight (PDF) (https://www.ntsb.gov/safety/data/Documents/datafiles/PhaseofFlightDefinitions.pdf), and NTSB coding manual, before 2008 (PDF) (https://www.ntsb.gov/GILS/Documents/codman.pdf). NTSB publishes no definitions for its findings, only their names.

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