# Propeller indicating system

- Type: NTSB finding subsection
- Path: [Aircraft](https://openairdocs.org/ntsb-findings/01) › [Aircraft propeller/rotor](https://openairdocs.org/ntsb-findings/0104) › [Propeller system](https://openairdocs.org/ntsb-findings/010461) › Propeller indicating system
- NTSB code: 01046140
- Cases: 1
- In the probable cause: 0
- Fatal cases: 0
- All cases: https://openairdocs.org/ntsb-findings/01046140/cases.md
- Cases with it in the probable cause: https://openairdocs.org/ntsb-findings/01046140/cases.md?cause=1
- Page: https://openairdocs.org/ntsb-findings/01046140

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

- 2012: 0 / 1

## Defining events in these cases

- [Aircraft structural failure](https://openairdocs.org/ntsb-events/337): 1 cases

## Aircraft models (registry)

- [Piper PA-28R-200](https://openairdocs.org/model/piper-pa-28r-200): 1 cases

## Other findings in the same cases

- [Propeller blade section](https://openairdocs.org/ntsb-findings/01046111) (Aircraft): 1 cases

## Newest cases

- [NTSB CEN12IA377](https://openairdocs.org/ntsb/CEN12IA377), Jun 18, 2012: Piper PA-28R-200 (N4350T), Lacon, IL, incident, minor damage. Probable cause: The propeller blade’s failure due to a fatigue crack that originated from a surface gouge that resulted from foreign object damage to the propeller blade that occurred at an unknown time.

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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