# Instrument wiring

- Type: NTSB finding subsection
- Path: [Aircraft](https://openairdocs.org/ntsb-findings/01) › [Aircraft systems](https://openairdocs.org/ntsb-findings/0102) › [Indicating/recording systems](https://openairdocs.org/ntsb-findings/010231) › Instrument wiring
- NTSB code: 01023197
- Cases: 3
- In the probable cause: 2
- Fatal cases: 0
- All cases: https://openairdocs.org/ntsb-findings/01023197/cases.md
- Cases with it in the probable cause: https://openairdocs.org/ntsb-findings/01023197/cases.md?cause=1
- Page: https://openairdocs.org/ntsb-findings/01023197

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

- 2017: 1 / 1
- 2020: 0 / 1
- 2024: 1 / 1

## Defining events in these cases

- [Loss of engine power (total)](https://openairdocs.org/ntsb-events/341): 1 cases
- [Electrical system malf/failure](https://openairdocs.org/ntsb-events/332): 1 cases
- [Sys/Comp malf/fail (non-power)](https://openairdocs.org/ntsb-events/330): 1 cases

## Aircraft models (registry)

- [Robinson Helicopter R44 II](https://openairdocs.org/model/robinson-helicopter-r44-ii): 1 cases
- [Cirrus Design SR22](https://openairdocs.org/model/cirrus-design-sr22): 1 cases
- [Bell 407](https://openairdocs.org/model/bell-407): 1 cases

## Other findings in the same cases

- [Understanding/comprehension](https://openairdocs.org/ntsb-findings/02041515) (Personnel issues): 2 cases
- [Identification/recognition](https://openairdocs.org/ntsb-findings/02041510) (Personnel issues): 2 cases
- [Policy/procedure development](https://openairdocs.org/ntsb-findings/04011025) (Organizational issues): 1 cases
- [Time/schedule pressure](https://openairdocs.org/ntsb-findings/03042010) (Environmental issues): 1 cases
- [Low light](https://openairdocs.org/ntsb-findings/03036015) (Environmental issues): 1 cases
- [Fence/fence post](https://openairdocs.org/ntsb-findings/03022047) (Environmental issues): 1 cases
- [Terrain, general](https://openairdocs.org/ntsb-findings/03021000) (Environmental issues): 1 cases
- [Decision making/judgment](https://openairdocs.org/ntsb-findings/02041520) (Personnel issues): 1 cases
- [Cognitive overload](https://openairdocs.org/ntsb-findings/02023015) (Personnel issues): 1 cases
- [Fatigue due to work schedule](https://openairdocs.org/ntsb-findings/02013520) (Personnel issues): 1 cases

## Newest cases

- [NTSB WPR24LA265](https://openairdocs.org/ntsb/WPR24LA265), Aug 3, 2024: Bell 407 (N20BH), Raft River, ID, substantial damage. Probable cause: The pilot’s misdiagnosis of an erroneous engine instrument indication and his subsequent decision to enter an autorotation, which resulted in a hard landing due to degraded visual cues and low…
- [NTSB CEN21LA057](https://openairdocs.org/ntsb/CEN21LA057), Oct 24, 2020: Cirrus SR22 (N183V), Tishomingo, OK, substantial damage. Probable cause: The pilot’s improper adjustment of the engine mixture control, which resulted in a total loss of engine power. Contributing to the accident was a disconnected oil temperature connector, which was…
- [NTSB WPR17LA159](https://openairdocs.org/ntsb/WPR17LA159), Jul 21, 2017: Robinson Helicopter R44 II (N3254E), Van Nuys, CA, substantial damage. Probable cause: An improper repair of the right magneto's tachometer and governor signal wire, which failed during cruise flight and initiated a simultaneous malfunction of both the engine tachometer and governor…

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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