# Pitot/static anti-ice

- Type: NTSB finding subsection
- Path: [Aircraft](https://openairdocs.org/ntsb-findings/01) › [Aircraft systems](https://openairdocs.org/ntsb-findings/0102) › [Ice/rain protection system](https://openairdocs.org/ntsb-findings/010230) › Pitot/static anti-ice
- NTSB code: 01023030
- Cases: 4
- In the probable cause: 4
- Fatal cases: 0
- All cases: https://openairdocs.org/ntsb-findings/01023030/cases.md
- Cases with it in the probable cause: https://openairdocs.org/ntsb-findings/01023030/cases.md?cause=1
- Page: https://openairdocs.org/ntsb-findings/01023030

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

- 2009: 3 / 3
- 2023: 1 / 1

## Defining events in these cases

- [Flight instrument malf/fail](https://openairdocs.org/ntsb-events/334): 3 cases
- [Loss of control in flight](https://openairdocs.org/ntsb-events/240): 1 cases

## Aircraft models (registry)

- [Piper PA-46-310P](https://openairdocs.org/model/piper-pa-46-310p): 1 cases
- [Airbus A330-323](https://openairdocs.org/model/airbus-a330-323): 1 cases
- [Beech V35](https://openairdocs.org/model/beech-v35): 1 cases

## Other findings in the same cases

- [Conducive to structural icing](https://openairdocs.org/ntsb-findings/03031025) (Environmental issues): 1 cases
- [Use of equip/system](https://openairdocs.org/ntsb-findings/02063015) (Personnel issues): 1 cases
- [Info processing/decision, general](https://openairdocs.org/ntsb-findings/02041500) (Personnel issues): 1 cases
- [Airspeed](https://openairdocs.org/ntsb-findings/01062010) (Aircraft): 1 cases
- [Indep instrument (clock, etc)](https://openairdocs.org/ntsb-findings/01023120) (Aircraft): 1 cases

## Newest cases

- [NTSB WPR23LA236](https://openairdocs.org/ntsb/WPR23LA236), Mar 24, 2023: Piper PA-46-310P (N146MS), Springfield, KY, substantial damage. Probable cause: The pilot’s failure to activate the pitot heat in a timely manner during flight into icing conditions, which resulted in a temporary failure of the flight instruments and a subsequent loss of control.
- [NTSB CEN10LA068](https://openairdocs.org/ntsb/CEN10LA068), Dec 6, 2009: Beech V35 (N108L), Dodge City, KS, substantial damage. Probable cause: The failure of the pitot heat system in icing conditions resulting in an inoperative airspeed indicator which led to an inadvertant stall while on final approach. Contributing to the accident was the…
- [NTSB DCA09IA064](https://openairdocs.org/ntsb/DCA09IA064), Jun 23, 2009: Airbus A330-323 (N805NW), Kagoshima, Japan, incident, no damage. Probable cause: Brief and temporary blockage of the pitot probes in cruise flight, most likely due to ice crystals aloft, leading to erroneous airspeed indications and airplane automation degradation as designed.…
- [NTSB DCA09IA055](https://openairdocs.org/ntsb/DCA09IA055), May 22, 2009: Airbus A330 (PT-MVB), Los Cayes, Haiti, incident, no damage. Probable cause: The final report for this incident was combined with and can be found under NTSB Investigation number, DCA09IA064.

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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