# Pressurization control system

- Type: NTSB finding subsection
- Path: [Aircraft](https://openairdocs.org/ntsb-findings/01) › [Aircraft systems](https://openairdocs.org/ntsb-findings/0102) › [Air conditioning system](https://openairdocs.org/ntsb-findings/010221) › Pressurization control system
- NTSB code: 01022130
- Cases: 3
- In the probable cause: 2
- Fatal cases: 3
- All cases: https://openairdocs.org/ntsb-findings/01022130/cases.md
- Cases with it in the probable cause: https://openairdocs.org/ntsb-findings/01022130/cases.md?cause=1
- Page: https://openairdocs.org/ntsb-findings/01022130

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

- 2008: 1 / 2
- 2014: 1 / 1

## Defining events in these cases

- [Pressure/environ sys malf/fail](https://openairdocs.org/ntsb-events/331): 1 cases
- [Loss of control in flight](https://openairdocs.org/ntsb-events/240): 1 cases
- [Cabin safety event](https://openairdocs.org/ntsb-events/110): 1 cases

## Aircraft models (registry)

- [Socata TBM 700](https://openairdocs.org/model/socata-tbm-700): 1 cases
- [Beech C90A](https://openairdocs.org/model/beech-c90a): 1 cases

## Other findings in the same cases

- [Hypoxia/anoxia](https://openairdocs.org/ntsb-findings/02012035) (Personnel issues): 2 cases
- [Adequacy of policy/proc](https://openairdocs.org/ntsb-findings/04021015) (Organizational issues): 1 cases
- [Identification/recognition](https://openairdocs.org/ntsb-findings/02041510) (Personnel issues): 1 cases
- [Lack of action](https://openairdocs.org/ntsb-findings/02041030) (Personnel issues): 1 cases
- [Fuel](https://openairdocs.org/ntsb-findings/01071010) (Aircraft): 1 cases
- [Performance/control parameters, general](https://openairdocs.org/ntsb-findings/01062000) (Aircraft): 1 cases
- [Vacuum system, general](https://openairdocs.org/ntsb-findings/01023700) (Aircraft): 1 cases

## Newest cases

- [NTSB ERA14LA424](https://openairdocs.org/ntsb/ERA14LA424), Sep 5, 2014: Socata TBM 700 (N900KN), Caribbean Sea, A1, destroyed, 2 fatal. Probable cause: The design of the cabin pressurization system, which made it prone to unnecessary shutdown, combined with a checklist design that prioritized troubleshooting over ensuring that the pilot was…
- [NTSB CEN09FA087](https://openairdocs.org/ntsb/CEN09FA087), Dec 14, 2008: Beech C90 (N43KM), Rocksprings, TX, substantial damage, 1 fatal. Probable cause: The pilot's failure to properly configure the pressurization controls, resulting in his impairment and subsequent incapacitation due to hypoxia.
- [NTSB DFW08LA097](https://openairdocs.org/ntsb/DFW08LA097), Apr 10, 2008: Raytheon B200 (N300FL), Taylor, TX, minor damage, 1 fatal. Probable cause: The failure of the pilot and mechanic to ensure that the airplane was depressurized prior to actuating the door. Contributing to the accident was the failure of the vacuum system.

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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