# Air conditioning system, general

- 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) › Air conditioning system, general
- NTSB code: 01022100
- Cases: 2
- In the probable cause: 1
- Fatal cases: 0
- All cases: https://openairdocs.org/ntsb-findings/01022100/cases.md
- Cases with it in the probable cause: https://openairdocs.org/ntsb-findings/01022100/cases.md?cause=1
- Page: https://openairdocs.org/ntsb-findings/01022100

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

- 2021: 1 / 1
- 2023: 0 / 1

## Defining events in these cases

- [Birdstrike](https://openairdocs.org/ntsb-events/901): 1 cases
- [Pressure/environ sys malf/fail](https://openairdocs.org/ntsb-events/331): 1 cases

## Aircraft models (registry)

- [Cessna 172S](https://openairdocs.org/model/cessna-172s): 1 cases
- [Boeing 737-8](https://openairdocs.org/model/boeing-737-8): 1 cases

## Other findings in the same cases

- [Adequacy of policy/proc](https://openairdocs.org/ntsb-findings/04021015) (Organizational issues): 1 cases
- [Manufacture/production, general](https://openairdocs.org/ntsb-findings/04013000) (Organizational issues): 1 cases
- [Animal(s)/bird(s)](https://openairdocs.org/ntsb-findings/03022045) (Environmental issues): 1 cases
- [Sign/marker](https://openairdocs.org/ntsb-findings/03022015) (Environmental issues): 1 cases
- [Decision making/judgment](https://openairdocs.org/ntsb-findings/02041520) (Personnel issues): 1 cases
- [Hoses and tubes](https://openairdocs.org/ntsb-findings/01071410) (Aircraft): 1 cases
- [Eng oil sys (airframe furnish), general](https://openairdocs.org/ntsb-findings/01057900) (Aircraft): 1 cases
- [Engine bleed air system, general](https://openairdocs.org/ntsb-findings/01057500) (Aircraft): 1 cases
- [Power plant, general](https://openairdocs.org/ntsb-findings/01057100) (Aircraft): 1 cases

## Newest cases

- [NTSB DCA24LA330](https://openairdocs.org/ntsb/DCA24LA330), Dec 20, 2023: Boeing 737-8 (N8830Q), Kenner, LA, incident, minor damage. Probable cause: A partial loss of engine power due to bird ingestion in the No. 1 (left) engine, which resulted in the activation of the load reduction device to prevent vibration. The load reduction device…
- [NTSB CEN21LA268](https://openairdocs.org/ntsb/CEN21LA268), Jun 10, 2021: Cessna 172S (N365CP), Saint James, LA, substantial damage. Probable cause: The in-flight fatigue failure of an air-conditioning system hose which resulted in a precautionary landing and impact with a road sign.

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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