# Fus (attach fitting 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) › Fus (attach fitting on wing)
- NTSB code: 01035741
- Cases: 3
- In the probable cause: 3
- Fatal cases: 1
- All cases: https://openairdocs.org/ntsb-findings/01035741/cases.md
- Cases with it in the probable cause: https://openairdocs.org/ntsb-findings/01035741/cases.md?cause=1
- Page: https://openairdocs.org/ntsb-findings/01035741

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

- 2019: 1 / 1
- 2022: 1 / 1
- 2026: 1 / 1

## Defining events in these cases

- [Sys/Comp malf/fail (non-power)](https://openairdocs.org/ntsb-events/330): 2 cases
- [Aircraft structural failure](https://openairdocs.org/ntsb-events/337): 1 cases

## Aircraft models (registry)

- [Pzl-Swidnik PW-5](https://openairdocs.org/model/pzl-swidnik-pw-5): 1 cases
- [Gallagher Loren V AIRCAM](https://openairdocs.org/model/gallagher-loren-v-aircam): 1 cases
- [Dietrich Ryan S-4 COYOTE 1](https://openairdocs.org/model/dietrich-ryan-s-4-coyote-1): 1 cases

## Other findings in the same cases

- [Installation](https://openairdocs.org/ntsb-findings/02062035) (Personnel issues): 1 cases
- [Preflight inspection](https://openairdocs.org/ntsb-findings/02061510) (Personnel issues): 1 cases
- [Attach fittings (on wing)](https://openairdocs.org/ntsb-findings/01035740) (Aircraft): 1 cases
- [Return to service](https://openairdocs.org/ntsb-findings/01010530) (Aircraft): 1 cases

## Newest cases

- [NTSB WPR26LA203](https://openairdocs.org/ntsb/WPR26LA203), May 23, 2026: Pzl-Swidnik PW-5 (N157AJ), Soap Lake, WA, substantial damage. Probable cause: 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 WPR22LA149](https://openairdocs.org/ntsb/WPR22LA149), Apr 8, 2022: Dietrich Ryan S-4 Coyote 1 (N3156D), Chula Vista, CA, substantial damage. Probable cause: The pilot/owner and maintenance personnel’s improper installation of the right wing’s aft lift strut to the right wing, which resulted in a loss of lift during takeoff, an uncommanded right roll, and…
- [NTSB WPR19FA161](https://openairdocs.org/ntsb/WPR19FA161), Jun 8, 2019: Lockwood Aircam (N123GN), Hemet, CA, substantial damage, 1 fatal. Probable cause: The pilot/builder's improper installation of the left wing during the build process, which resulted in the wing failing during takeoff.

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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