# Dist (ignition harness)

- Type: NTSB finding subsection
- Path: [Aircraft](https://openairdocs.org/ntsb-findings/01) › [Aircraft power plant](https://openairdocs.org/ntsb-findings/0105) › [Ignition system](https://openairdocs.org/ntsb-findings/010574) › Dist (ignition harness)
- NTSB code: 01057420
- Cases: 5
- In the probable cause: 5
- Fatal cases: 0
- All cases: https://openairdocs.org/ntsb-findings/01057420/cases.md
- Cases with it in the probable cause: https://openairdocs.org/ntsb-findings/01057420/cases.md?cause=1
- Page: https://openairdocs.org/ntsb-findings/01057420

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

- 2013: 1 / 1
- 2015: 1 / 1
- 2018: 1 / 1
- 2020: 1 / 1
- 2024: 1 / 1

## Defining events in these cases

- [Loss of engine power (partial)](https://openairdocs.org/ntsb-events/342): 3 cases
- [Loss of engine power (total)](https://openairdocs.org/ntsb-events/341): 1 cases
- [Powerplant sys/comp malf/fail](https://openairdocs.org/ntsb-events/340): 1 cases

## Aircraft models (registry)

- [Diamond Aircraft Ind DA20-C1](https://openairdocs.org/model/diamond-aircraft-ind-da20-c1): 1 cases
- [Cirrus Design SR22](https://openairdocs.org/model/cirrus-design-sr22): 1 cases
- [Cessna 120](https://openairdocs.org/model/cessna-120): 1 cases
- [American AA-1A](https://openairdocs.org/model/american-aa-1a): 1 cases
- [Walker Phil RV6A](https://openairdocs.org/model/walker-phil-rv6a): 1 cases

## Other findings in the same cases

- [Scheduled/routine maintenance](https://openairdocs.org/ntsb-findings/02062010) (Personnel issues): 2 cases
- [Snow/ice](https://openairdocs.org/ntsb-findings/03022060) (Environmental issues): 1 cases
- [Tree(s)](https://openairdocs.org/ntsb-findings/03022020) (Environmental issues): 1 cases
- [Aircraft control](https://openairdocs.org/ntsb-findings/02063040) (Personnel issues): 1 cases
- [Angle of attack](https://openairdocs.org/ntsb-findings/01062042) (Aircraft): 1 cases
- [Airspeed](https://openairdocs.org/ntsb-findings/01062010) (Aircraft): 1 cases
- [Recip eng wiring](https://openairdocs.org/ntsb-findings/01058597) (Aircraft): 1 cases
- [Ignition system wiring](https://openairdocs.org/ntsb-findings/01057497) (Aircraft): 1 cases
- [Spark plugs/igniters](https://openairdocs.org/ntsb-findings/01057421) (Aircraft): 1 cases
- [Magneto/distributor](https://openairdocs.org/ntsb-findings/01057414) (Aircraft): 1 cases

## Newest cases

- [NTSB ANC24LA025](https://openairdocs.org/ntsb/ANC24LA025), Apr 21, 2024: Cessna 120 (N77032), Talkeetna, AK, substantial damage. Probable cause: A degraded ignition system, which resulted in a total loss of engine power. Contributing to the accident was maintenance personnel’s inadequate inspection of the ignition system.
- [NTSB WPR20LA148](https://openairdocs.org/ntsb/WPR20LA148), May 15, 2020: American AA-1A (N12YT), Blythe, CA, substantial damage. Probable cause: The excessive wear of one magneto’s wiring harness, which resulted in a loss of engine power during takeoff. Contributing to the accident was the pilot’s failure to maintain airspeed following the…
- [NTSB ERA19LA029](https://openairdocs.org/ntsb/ERA19LA029), Oct 28, 2018: Diamond DA20 (N653DC), Mountain Rest, SC, substantial damage. Probable cause: A partial loss of engine power due to multiple discrepancies of the engine's ignition system.
- [NTSB ERA15LA134](https://openairdocs.org/ntsb/ERA15LA134), Feb 19, 2015: Cirrus Design SR22 (N358CD), Lexington, KY, substantial damage. Probable cause: Maintenance personnel's failure to properly inspect and clean the engine ignition harness spark plug terminals, which resulted in a partial loss of engine power during an attempted takeoff.
- [NTSB CEN13LA220](https://openairdocs.org/ntsb/CEN13LA220), Apr 4, 2013: Walker Phil RV-6A (N525PW), Spearfish, SD, substantial damage. Probable cause: The coil-distributor wire loosening in flight, which rendered the ignition system inoperative and subsequently caused the loss of engine power.

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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