# Manufacture/production

- Type: NTSB finding section
- Path: [Organizational issues](https://openairdocs.org/ntsb-findings/04) › [Development](https://openairdocs.org/ntsb-findings/0401) › Manufacture/production
- NTSB code: 040130
- Cases: 65
- In the probable cause: 55
- Fatal cases: 9
- All cases: https://openairdocs.org/ntsb-findings/040130/cases.md
- Cases with it in the probable cause: https://openairdocs.org/ntsb-findings/040130/cases.md?cause=1
- Page: https://openairdocs.org/ntsb-findings/040130

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

- 2008: 6 / 6
- 2009: 3 / 3
- 2010: 9 / 11
- 2011: 3 / 4
- 2012: 2 / 3
- 2013: 4 / 4
- 2014: 2 / 2
- 2015: 4 / 4
- 2016: 2 / 3
- 2017: 2 / 2
- 2018: 2 / 3
- 2019: 1 / 1
- 2020: 0 / 1
- 2022: 1 / 3
- 2023: 7 / 8
- 2024: 6 / 6
- 2025: 1 / 1

## Findings

- [Equipment manufacture](https://openairdocs.org/ntsb-findings/04013010): 36 cases, 31 in the probable cause
- [Manufacture/production, general](https://openairdocs.org/ntsb-findings/04013000): 17 cases, 16 in the probable cause
- [Document/info production](https://openairdocs.org/ntsb-findings/04013020): 15 cases, 10 in the probable cause

## Defining events in these cases

- [Sys/Comp malf/fail (non-power)](https://openairdocs.org/ntsb-events/330): 11 cases
- [Powerplant sys/comp malf/fail](https://openairdocs.org/ntsb-events/340): 9 cases
- [Loss of engine power (partial)](https://openairdocs.org/ntsb-events/342): 7 cases
- [Loss of control in flight](https://openairdocs.org/ntsb-events/240): 5 cases
- [Part(s) separation from AC](https://openairdocs.org/ntsb-events/338): 4 cases
- [Fire/smoke (non-impact)](https://openairdocs.org/ntsb-events/150): 4 cases
- [Uncontained engine failure](https://openairdocs.org/ntsb-events/343): 3 cases
- [Loss of engine power (total)](https://openairdocs.org/ntsb-events/341): 3 cases
- [Aircraft structural failure](https://openairdocs.org/ntsb-events/337): 3 cases
- [Flight control sys malf/fail](https://openairdocs.org/ntsb-events/333): 3 cases

## Aircraft models (registry)

- [Boeing 757-223](https://openairdocs.org/model/boeing-757-223): 3 cases
- [Flight Design CTLS](https://openairdocs.org/model/flight-design-ctls): 2 cases
- [Agustawestland Philadelphia AW139](https://openairdocs.org/model/agustawestland-philadelphia-aw139): 2 cases
- [Socata TBM 700](https://openairdocs.org/model/socata-tbm-700): 1 cases
- [Eurocopter AS 350 B2](https://openairdocs.org/model/eurocopter-as-350-b2): 1 cases
- [Robinson Helicopter R44](https://openairdocs.org/model/robinson-helicopter-r44): 1 cases
- [Asbell William E PITTS S-1E](https://openairdocs.org/model/asbell-william-e-pitts-s-1e): 1 cases
- [Piper PA-32R-301](https://openairdocs.org/model/piper-pa-32r-301): 1 cases
- [Piper PA-28R-200](https://openairdocs.org/model/piper-pa-28r-200): 1 cases
- [Piper PA-28-181](https://openairdocs.org/model/piper-pa-28-181): 1 cases

## Other findings in the same cases

- [Aircraft control](https://openairdocs.org/ntsb-findings/02063040) (Personnel issues): 4 cases
- [Decision making/judgment](https://openairdocs.org/ntsb-findings/02041520) (Personnel issues): 4 cases
- [Recip eng cyl section](https://openairdocs.org/ntsb-findings/01058530) (Aircraft): 4 cases
- [Turbine section](https://openairdocs.org/ntsb-findings/01057250) (Aircraft): 4 cases
- [Main gear strut/axle/truck](https://openairdocs.org/ntsb-findings/01023213) (Aircraft): 4 cases
- [Adequacy of policy/proc](https://openairdocs.org/ntsb-findings/04021015) (Organizational issues): 3 cases
- [Equipment design](https://openairdocs.org/ntsb-findings/04011010) (Organizational issues): 3 cases
- [Knowledge of equipment](https://openairdocs.org/ntsb-findings/02032015) (Personnel issues): 3 cases
- [Power plant, general](https://openairdocs.org/ntsb-findings/01057100) (Aircraft): 3 cases
- [Propeller blade section](https://openairdocs.org/ntsb-findings/01046111) (Aircraft): 3 cases

## Newest cases

- [NTSB CEN25LA117](https://openairdocs.org/ntsb/CEN25LA117), Mar 10, 2025: Vans RV-7A (N923ZA), Plainview, TX, substantial damage. Probable cause: The improper machining of the propeller blade bearing seat, which resulted in an inflight propeller blade fatigue failure. Contributing to the accident was the improper machining of the propeller hub…
- [NTSB CEN25LA043](https://openairdocs.org/ntsb/CEN25LA043), Nov 17, 2024: Pitts S1E (N52B), Seguin, TX, substantial damage. Probable cause: The improper construction of the rudder cable assembly by the airplane builder, which resulted in the fatigue failure of the left rudder cable during the landing roll and the pilot’s subsequent…
- [NTSB ERA24LA392](https://openairdocs.org/ntsb/ERA24LA392), Sep 23, 2024: Piper PA28 (N4298V), LaGrange, GA, substantial damage. Probable cause: Improper manufacture of a cylinder exhaust valve guide by the engine manufacturer, which resulted in a stuck exhaust valve and a partial loss of engine power during initial climb.
- [NTSB CEN24FA218](https://openairdocs.org/ntsb/CEN24FA218), Jun 12, 2024: Cessna 172 (N656MA), Gainesville, TX, substantial damage, 1 fatal. Probable cause: The fuel pump manufacturer’s improper torquing of screws on the engine-driven fuel pump, which resulted in a disruption in the fuel system and a loss of engine power on initial climb.
- [NTSB ERA24LA163](https://openairdocs.org/ntsb/ERA24LA163), Apr 4, 2024: Evektor-Aerotechnik A S Harmony LSA (N469JA), Seffner, FL, substantial damage. Probable cause: The improper installation of the fuel line that connected the fuel pump to the four-way distributor, which resulted in fuel starvation when the line became disconnected.
- [NTSB CEN24LA121](https://openairdocs.org/ntsb/CEN24LA121), Feb 25, 2024: Piper PA-28-181 (N38696), Watertown, SD, substantial damage. Probable cause: The stuck No. 2 cylinder exhaust valve, which resulted in a partial loss of engine power and a forced landing due to an undersized exhaust valve guide. Contributing to the accident were the improper…
- [NTSB ERA24LA099](https://openairdocs.org/ntsb/ERA24LA099), Jan 18, 2024: Swissdrones Operating SDO 50 V2 (N780PA), Antioch, GA, substantial damage. Probable cause: A partial loss of engine power due to a reduction of fuel flow for undetermined reasons. Contributing to the accident was the UAS manufacturer’s lack of instructions for a partial loss of engine…
- [NTSB DCA24LA330](https://openairdocs.org/ntsb/DCA24LA330), Dec 20, 2023: Boeing 737-8 (N8830Q), Kenner, LA, incident, minor damage. Probable cause: A partial loss of engine power due to bird ingestion in the No. 1 (left) engine, which resulted in the activation of the load reduction device to prevent vibration. The load reduction device…
- [NTSB ERA24LA066](https://openairdocs.org/ntsb/ERA24LA066), Dec 15, 2023: Diamond Aircraft Ind DA 40 NG (N907L), Asheville, NC, substantial damage. Probable cause: Fatigue failure of the No. 4 inner main bearing cap screw and connecting rod bolts, which resulted in a total loss of engine power. Contributing to the failure were the low material strength of the…
- [NTSB WPR24FA053](https://openairdocs.org/ntsb/WPR24FA053), Dec 8, 2023: Beauchamp Norm Kitfox (N66180), Eloy, AZ, destroyed, 1 fatal. Probable cause: The separation of a propeller blade during the initial climb due to insufficient blade retention forces. Contributing to the accident was the propeller blade retention design, manufacturing defects…

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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