# Fasteners

- Type: NTSB finding subsection
- Path: [Aircraft](https://openairdocs.org/ntsb-findings/01) › [Fluids/misc hardware](https://openairdocs.org/ntsb-findings/0107) › [Misc hardware](https://openairdocs.org/ntsb-findings/010714) › Fasteners
- NTSB code: 01071430
- Cases: 58
- In the probable cause: 53
- Fatal cases: 9
- All cases: https://openairdocs.org/ntsb-findings/01071430/cases.md
- Cases with it in the probable cause: https://openairdocs.org/ntsb-findings/01071430/cases.md?cause=1
- Page: https://openairdocs.org/ntsb-findings/01071430

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

- 2008: 4 / 4
- 2009: 1 / 2
- 2010: 1 / 1
- 2011: 1 / 1
- 2012: 2 / 2
- 2013: 4 / 4
- 2014: 1 / 1
- 2015: 1 / 2
- 2016: 5 / 5
- 2017: 3 / 3
- 2018: 4 / 5
- 2019: 5 / 5
- 2020: 5 / 5
- 2021: 4 / 4
- 2022: 2 / 2
- 2023: 4 / 5
- 2024: 3 / 4
- 2025: 1 / 1
- 2026: 2 / 2

## Defining events in these cases

- [Loss of engine power (partial)](https://openairdocs.org/ntsb-events/342): 11 cases
- [Part(s) separation from AC](https://openairdocs.org/ntsb-events/338): 10 cases
- [Flight control sys malf/fail](https://openairdocs.org/ntsb-events/333): 9 cases
- [Loss of engine power (total)](https://openairdocs.org/ntsb-events/341): 5 cases
- [Sys/Comp malf/fail (non-power)](https://openairdocs.org/ntsb-events/330): 5 cases
- [Powerplant sys/comp malf/fail](https://openairdocs.org/ntsb-events/340): 3 cases
- [Aircraft structural failure](https://openairdocs.org/ntsb-events/337): 3 cases
- [Loss of control on ground](https://openairdocs.org/ntsb-events/230): 3 cases
- [Miscellaneous/other](https://openairdocs.org/ntsb-events/900): 2 cases
- [Fire/smoke (non-impact)](https://openairdocs.org/ntsb-events/150): 2 cases

## Aircraft models (registry)

- [Piper PA-28-180](https://openairdocs.org/model/piper-pa-28-180): 2 cases
- [Bell UH-1H](https://openairdocs.org/model/bell-uh-1h): 2 cases
- [Stinson 108-3](https://openairdocs.org/model/stinson-108-3): 1 cases
- [Eurocopter France AS350B2](https://openairdocs.org/model/eurocopter-france-as350b2): 1 cases
- [Eurocopter AS 350 B2](https://openairdocs.org/model/eurocopter-as-350-b2): 1 cases
- [Sikorsky S-76D](https://openairdocs.org/model/sikorsky-s-76d): 1 cases
- [Schweizer G-164B](https://openairdocs.org/model/schweizer-g-164b): 1 cases
- [Ryan Aeronautical ST3KR](https://openairdocs.org/model/ryan-aeronautical-st3kr): 1 cases
- [Robinson Helicopter R22 BETA](https://openairdocs.org/model/robinson-helicopter-r22-beta): 1 cases
- [Raytheon A36](https://openairdocs.org/model/raytheon-a36): 1 cases

## Other findings in the same cases

- [Installation](https://openairdocs.org/ntsb-findings/02062035) (Personnel issues): 14 cases
- [Scheduled/routine maintenance](https://openairdocs.org/ntsb-findings/02062010) (Personnel issues): 6 cases
- [Directional control](https://openairdocs.org/ntsb-findings/01062020) (Aircraft): 6 cases
- [Power lever](https://openairdocs.org/ntsb-findings/01057603) (Aircraft): 6 cases
- [Aircraft control](https://openairdocs.org/ntsb-findings/02063040) (Personnel issues): 4 cases
- [Scheduled/routine inspection](https://openairdocs.org/ntsb-findings/02061520) (Personnel issues): 3 cases
- [Preflight inspection](https://openairdocs.org/ntsb-findings/02061510) (Personnel issues): 3 cases
- [Decision making/judgment](https://openairdocs.org/ntsb-findings/02041520) (Personnel issues): 3 cases
- [Oil](https://openairdocs.org/ntsb-findings/01071020) (Aircraft): 3 cases
- [Aircraft structures, general](https://openairdocs.org/ntsb-findings/01030000) (Aircraft): 3 cases

## Newest cases

- [NTSB ERA26LA193](https://openairdocs.org/ntsb/ERA26LA193), Apr 4, 2026: Bell UH1 (N75140), Enterprise, AL, substantial damage. Probable cause: The in-flight separation of a turn lock fastener stud, which resulted in substantial damage to one tail rotor blade.
- [NTSB CEN26LA131](https://openairdocs.org/ntsb/CEN26LA131), Feb 28, 2026: Quad City Challenger (UNREG), Van Burensburg, IL, substantial damage. Probable cause: Propeller separation due to failure of the propeller attachment bolts.
- [NTSB ERA25FA185](https://openairdocs.org/ntsb/ERA25FA185), Apr 24, 2025: MX Aircraft Tech PTY MXS (N530RH), Hampton, VA, substantial damage, 1 fatal. Probable cause: A counterweight plug that loosened during the accident flight, jammed the elevator, and resulted in loss of control during landing.
- [NTSB ERA24LA251](https://openairdocs.org/ntsb/ERA24LA251), Jun 8, 2024: William Loren Noggle JA30 Superstol (N719LN), Tennille, GA, substantial damage. Probable cause: The loss of elevator control during flight due to the elevator control rod and its hardware disconnecting from its installation area, which resulted in an uncontrolled descent into trees and terrain.…
- [NTSB CEN24FA212](https://openairdocs.org/ntsb/CEN24FA212), Jun 7, 2024: Beech V35A (N150WR), Arvada, CO, destroyed, 1 fatal. Probable cause: A total loss of engine power due to oil starvation as a result of loose turbocharger oil line fittings.
- [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 ERA24LA109](https://openairdocs.org/ntsb/ERA24LA109), Feb 1, 2024: Piper PA23 (N1317P), Louisville, KY, substantial damage. Probable cause: The failure of maintenance personnel to thoroughly inspect and repair the worn-out panel fasteners and fastener holes.
- [NTSB WPR24LA051](https://openairdocs.org/ntsb/WPR24LA051), Dec 5, 2023: Piper PA-28-180 (N9166J), Mesa, AZ, substantial damage. Probable cause: A failure of the engine cowling right side latch pin and fasteners, which resulted in the partial separation of the engine cowling during flight.
- [NTSB WPR24LA034](https://openairdocs.org/ntsb/WPR24LA034), Nov 13, 2023: Cessna 310 (N86H), Hayden, ID, substantial damage. Probable cause: The pilot’s failure to maintain adequate airspeed and his exceedance of the airplane’s critical angle of attack, which resulted in a loss of control and subsequent stall during a precautionary…
- [NTSB ERA23LA197](https://openairdocs.org/ntsb/ERA23LA197), Apr 14, 2023: Cessna 177RG (N7542V), Crestview, FL, substantial damage. Probable cause: The total loss of engine power due to the loosening and separation of the No. 1 connecting rod cap nuts in flight, resulting in catastrophic internal engine damage. Contributing to the accident was…

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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