# Hyd pwr sys wiring

- Type: NTSB finding subsection
- Path: [Aircraft](https://openairdocs.org/ntsb-findings/01) › [Aircraft systems](https://openairdocs.org/ntsb-findings/0102) › [Hydraulic power system](https://openairdocs.org/ntsb-findings/010229) › Hyd pwr sys wiring
- NTSB code: 01022997
- Cases: 1
- In the probable cause: 1
- Fatal cases: 0
- All cases: https://openairdocs.org/ntsb-findings/01022997/cases.md
- Cases with it in the probable cause: https://openairdocs.org/ntsb-findings/01022997/cases.md?cause=1
- Page: https://openairdocs.org/ntsb-findings/01022997

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

- 2012: 1 / 1

## Defining events in these cases

- [Landing gear collapse](https://openairdocs.org/ntsb-events/094): 1 cases

## Aircraft models (registry)

- [Fairchild SA227-AC](https://openairdocs.org/model/fairchild-sa227-ac): 1 cases

## Other findings in the same cases

- [Policy/procedure, general](https://openairdocs.org/ntsb-findings/04021000) (Organizational issues): 1 cases
- [Maintenance, general](https://openairdocs.org/ntsb-findings/02062000) (Personnel issues): 1 cases
- [Pump, main](https://openairdocs.org/ntsb-findings/01022913) (Aircraft): 1 cases

## Newest cases

- [NTSB CEN13IA059](https://openairdocs.org/ntsb/CEN13IA059), Nov 10, 2012: Fairchild SA227-AC (N619BA), Minneapolis, MN, incident, minor damage. Probable cause: Loose electrical connections to the hydraulic system and anomalies in the hydraulic shuttle valve and power pack, which resulted in an uncommanded gear unlock and collapse of the left main landing…

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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