# Cooler

- Type: NTSB finding subsection
- Path: [Aircraft](https://openairdocs.org/ntsb-findings/01) › [Aircraft power plant](https://openairdocs.org/ntsb-findings/0105) › [Eng oil sys (airframe furnish)](https://openairdocs.org/ntsb-findings/010579) › Cooler
- NTSB code: 01057921
- Cases: 7
- In the probable cause: 7
- Fatal cases: 0
- All cases: https://openairdocs.org/ntsb-findings/01057921/cases.md
- Cases with it in the probable cause: https://openairdocs.org/ntsb-findings/01057921/cases.md?cause=1
- Page: https://openairdocs.org/ntsb-findings/01057921

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

- 2011: 1 / 1
- 2013: 1 / 1
- 2016: 1 / 1
- 2018: 1 / 1
- 2019: 1 / 1
- 2022: 1 / 1
- 2024: 1 / 1

## Defining events in these cases

- [Loss of engine power (partial)](https://openairdocs.org/ntsb-events/342): 2 cases
- [Loss of engine power (total)](https://openairdocs.org/ntsb-events/341): 2 cases
- [Powerplant sys/comp malf/fail](https://openairdocs.org/ntsb-events/340): 2 cases
- [Fire/smoke (non-impact)](https://openairdocs.org/ntsb-events/150): 1 cases

## Aircraft models (registry)

- [Piper PA-32R-301](https://openairdocs.org/model/piper-pa-32r-301): 1 cases
- [Piper PA-22-150](https://openairdocs.org/model/piper-pa-22-150): 1 cases
- [Curtiss Wright P40M](https://openairdocs.org/model/curtiss-wright-p40m): 1 cases
- [Cessna 177](https://openairdocs.org/model/cessna-177): 1 cases
- [Cessna 172I](https://openairdocs.org/model/cessna-172i): 1 cases
- [Dorman Donald Thoresen BAKENG DUCE](https://openairdocs.org/model/dorman-donald-thoresen-bakeng-duce): 1 cases

## Other findings in the same cases

- [Oil](https://openairdocs.org/ntsb-findings/01071020) (Aircraft): 4 cases
- [Engine (reciprocating), general](https://openairdocs.org/ntsb-findings/01058500) (Aircraft): 2 cases
- [Soft surface](https://openairdocs.org/ntsb-findings/03023020) (Environmental issues): 1 cases
- [Rough terrain](https://openairdocs.org/ntsb-findings/03021015) (Environmental issues): 1 cases
- [Use of manual](https://openairdocs.org/ntsb-findings/02063020) (Personnel issues): 1 cases
- [Use of equip/system](https://openairdocs.org/ntsb-findings/02063015) (Personnel issues): 1 cases
- [Preflight inspection](https://openairdocs.org/ntsb-findings/02061510) (Personnel issues): 1 cases
- [Decision making/judgment](https://openairdocs.org/ntsb-findings/02041520) (Personnel issues): 1 cases
- [Identification/recognition](https://openairdocs.org/ntsb-findings/02041510) (Personnel issues): 1 cases
- [Descent/approach/glide path](https://openairdocs.org/ntsb-findings/01062040) (Aircraft): 1 cases

## Newest cases

- [NTSB ERA24LA289](https://openairdocs.org/ntsb/ERA24LA289), Jun 29, 2024: Cessna 172 (N46118), Lewiston Woodville, NC, substantial damage. Probable cause: The obstruction of the engine’s cooling system by foreign object debris (residential-type insulation), which resulted in smoke, an elevated oil temperature, and a subsequent off-airport landing on…
- [NTSB ERA23LA058](https://openairdocs.org/ntsb/ERA23LA058), Nov 14, 2022: Antonov AN2 (CU-A1885), Opa-Locka, FL, substantial damage. Probable cause: The pilot's failure to properly configure the cowl flaps and oil cooler shutters, which resulted in a total loss of engine power due to overheating of the engine. Contributing to the accident was the…
- [NTSB ANC19LA011](https://openairdocs.org/ntsb/ANC19LA011), Jan 22, 2019: Piper PA-22-150 (N7640D), Anchorage, AK, substantial damage. Probable cause: A loss of engine power due to oil starvation as the result of a loose B-nut fitting on the engine oil cooler, resulting in a forced landing to a soft, snow-covered surface, and a subsequent nose over.
- [NTSB CEN18LA174](https://openairdocs.org/ntsb/CEN18LA174), May 15, 2018: Cessna 177 (N9058F), Fort Wayne, IN, substantial damage. Probable cause: The failure of the oil cooler due to a defect in the brazed joint, which resulted in a loss of engine power due to oil starvation.
- [NTSB ANC17LA006](https://openairdocs.org/ntsb/ANC17LA006), Nov 12, 2016: Piper PA32R (N9084J), Bethel, AK, substantial damage. Probable cause: A total loss of engine power due to oil starvation, which resulted from an oil cooler leak at a fractured brazed seam.
- [NTSB WPR13LA304](https://openairdocs.org/ntsb/WPR13LA304), Jul 2, 2013: Dorman Bakeng (N39796), Garden Valley, ID, substantial damage. Probable cause: A mechanical failure of the oil cooler, which resulted in a complete loss of oil and engine power.
- [NTSB CEN12LA111](https://openairdocs.org/ntsb/CEN12LA111), Dec 8, 2011: Curtiss Wright P40M (N5813), Batavia, OH, substantial damage. Probable cause: A loss of engine power due to failure of the engine oil cooler and subsequent oil starvation to the engine.

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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