# NWS weather

- Type: NTSB finding subsection
- Path: [Environmental issues](https://openairdocs.org/ntsb-findings/03) › [Operating environment](https://openairdocs.org/ntsb-findings/0301) › [Meteorological services](https://openairdocs.org/ntsb-findings/030130) › NWS weather
- NTSB code: 03013020
- Cases: 1
- In the probable cause: 1
- Fatal cases: 1
- All cases: https://openairdocs.org/ntsb-findings/03013020/cases.md
- Cases with it in the probable cause: https://openairdocs.org/ntsb-findings/03013020/cases.md?cause=1
- Page: https://openairdocs.org/ntsb-findings/03013020

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

- 2023: 1 / 1

## Defining events in these cases

- [Structural icing](https://openairdocs.org/ntsb-events/210): 1 cases

## Aircraft models (registry)

- [Beech B36TC](https://openairdocs.org/model/beech-b36tc): 1 cases

## Other findings in the same cases

- [Freezing rain/sleet](https://openairdocs.org/ntsb-findings/03035040) (Environmental issues): 1 cases
- [Knowledge of meteorologic cond](https://openairdocs.org/ntsb-findings/02032020) (Personnel issues): 1 cases
- [Performance/control parameters, general](https://openairdocs.org/ntsb-findings/01062000) (Aircraft): 1 cases

## Newest cases

- [NTSB ANC23LA065](https://openairdocs.org/ntsb/ANC23LA065), Aug 27, 2023: Beech B36TC (N6709Q), Cape Yakataga, AK, destroyed, 2 fatal. Probable cause: The pilot’s continued flight into moderate to severe icing conditions, including supercooled large droplets, over mountainous terrain, which resulted in a loss of control and impact with terrain.…

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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