# Eng cntl sys wiring

- Type: NTSB finding subsection
- Path: [Aircraft](https://openairdocs.org/ntsb-findings/01) › [Aircraft power plant](https://openairdocs.org/ntsb-findings/0105) › [Engine controls](https://openairdocs.org/ntsb-findings/010576) › Eng cntl sys wiring
- NTSB code: 01057697
- Cases: 4
- In the probable cause: 4
- Fatal cases: 0
- All cases: https://openairdocs.org/ntsb-findings/01057697/cases.md
- Cases with it in the probable cause: https://openairdocs.org/ntsb-findings/01057697/cases.md?cause=1
- Page: https://openairdocs.org/ntsb-findings/01057697

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

- 2008: 1 / 1
- 2014: 1 / 1
- 2018: 1 / 1
- 2024: 1 / 1

## Defining events in these cases

- [Loss of engine power (partial)](https://openairdocs.org/ntsb-events/342): 2 cases
- [Powerplant sys/comp malf/fail](https://openairdocs.org/ntsb-events/340): 1 cases
- [Hard landing](https://openairdocs.org/ntsb-events/092): 1 cases

## Aircraft models (registry)

- [Robinson Helicopter R44 II](https://openairdocs.org/model/robinson-helicopter-r44-ii): 2 cases

## Other findings in the same cases

- [Aircraft control](https://openairdocs.org/ntsb-findings/02063040) (Personnel issues): 1 cases
- [Identification/recognition](https://openairdocs.org/ntsb-findings/02041510) (Personnel issues): 1 cases
- [Powerplant parameters](https://openairdocs.org/ntsb-findings/01062050) (Aircraft): 1 cases

## Newest cases

- [NTSB DCA24LA200](https://openairdocs.org/ntsb/DCA24LA200), May 24, 2024: Aergility Atlis 1 (N237KG), Dunnellon, FL, substantial damage. Probable cause: An intermittent electrical failure that switched two motor controllers off, resulting in a loss of hover capability and impact with the ground.
- [NTSB WPR19LA002](https://openairdocs.org/ntsb/WPR19LA002), Oct 7, 2018: Robinson R44 (N611TH), Salinas, CA, substantial damage. Probable cause: The partial loss of engine power after takeoff due to faulty wiring to the engine governor.
- [NTSB ERA14LA311](https://openairdocs.org/ntsb/ERA14LA311), Jun 24, 2014: Robinson Helicopter R44 II (N544BS), Nashville, TN, substantial damage. Probable cause: The pilot’s failure to maintain rotor rpm during an autorotation after a perceived partial loss of power, which resulted in a hard landing. Contributing to the accident was radio frequency…
- [NTSB NYC08IA244](https://openairdocs.org/ntsb/NYC08IA244), Jul 11, 2008: Agusta A109E (N109DU), Augusta, GA, incident, minor damage. Probable cause: The lack of available engine power and subsequent loss of rotor rpm due to the pilot’s departing with one engine at idle. Contributing to the incident was a corroded engine control wiring harness.

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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