# Vacuum distribution system

- Type: NTSB finding subsection
- Path: [Aircraft](https://openairdocs.org/ntsb-findings/01) › [Aircraft systems](https://openairdocs.org/ntsb-findings/0102) › [Vacuum system](https://openairdocs.org/ntsb-findings/010237) › Vacuum distribution system
- NTSB code: 01023710
- Cases: 2
- In the probable cause: 2
- Fatal cases: 2
- All cases: https://openairdocs.org/ntsb-findings/01023710/cases.md
- Cases with it in the probable cause: https://openairdocs.org/ntsb-findings/01023710/cases.md?cause=1
- Page: https://openairdocs.org/ntsb-findings/01023710

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

- 2012: 1 / 1
- 2016: 1 / 1

## Defining events in these cases

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

## Aircraft models (registry)

- [Piper PA-24-250](https://openairdocs.org/model/piper-pa-24-250): 1 cases
- [Beech V35B](https://openairdocs.org/model/beech-v35b): 1 cases

## Other findings in the same cases

- [Performance/control parameters, general](https://openairdocs.org/ntsb-findings/01062000) (Aircraft): 2 cases
- [Low visibility](https://openairdocs.org/ntsb-findings/03035015) (Environmental issues): 1 cases
- [Aircraft control](https://openairdocs.org/ntsb-findings/02063040) (Personnel issues): 1 cases
- [Replacement](https://openairdocs.org/ntsb-findings/02062020) (Personnel issues): 1 cases
- [Lack of action](https://openairdocs.org/ntsb-findings/02041030) (Personnel issues): 1 cases
- [Incorrect action selection](https://openairdocs.org/ntsb-findings/02041010) (Personnel issues): 1 cases
- [Spatial disorientation](https://openairdocs.org/ntsb-findings/02022025) (Personnel issues): 1 cases
- [Vestibular function](https://openairdocs.org/ntsb-findings/02011530) (Personnel issues): 1 cases
- [Directional gyro & indication](https://openairdocs.org/ntsb-findings/01023422) (Aircraft): 1 cases
- [Attitude gyro & indication](https://openairdocs.org/ntsb-findings/01023421) (Aircraft): 1 cases

## Newest cases

- [NTSB ERA16FA176](https://openairdocs.org/ntsb/ERA16FA176), May 3, 2016: Beech V35 (N440H), Syosset, NY, destroyed, 3 fatal. Probable cause: The pilot's loss of airplane control while operating in instrument meteorological conditions with only a partial instrument panel due to a failure of the airplane's vacuum pump. Contributing to the…
- [NTSB CEN12FA164](https://openairdocs.org/ntsb/CEN12FA164), Feb 21, 2012: Piper PA-24-250 (N7147P), Albany, TX, substantial damage, 2 fatal. Probable cause: The loss of flight instrumentation due to a failed vacuum pump while flying a night without a discernable horizon, which resulted in the pilot's spatial disorientation and an in-flight loss of…

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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