# JASC 7311: Engine Fuel/Oil Cooler

- Type: JASC system/component code (FAA)
- ATA chapter: 73 Engine Fuel and Control
- Title in the code table: ENGINE FUEL/OIL COOLER
- Service difficulty reports: 226
- FAA code table: https://www.faa.gov/sites/faa.gov/files/JASC_Code.pdf#page=62
- Page: https://openairdocs.org/jasc/7311

## What it covers

The unit in which aircraft fuel flows to cool the turbine engine lubricating oil. Does not include the connecting lines.

## Latest service difficulty reports

- [SDR AALA202604213464](https://openairdocs.org/sdr/AALA202604213464), Apr 17, 2026: FUEL HEATER, LEAKING (N973NN)
- [SDR 2025F00221](https://openairdocs.org/sdr/2025F00221), Sep 7, 2025: FUEL FILTER, WARNING MESSAGE (N724AV)
- [SDR AALA202509023546](https://openairdocs.org/sdr/AALA202509023546), Aug 29, 2025: FUEL FILTER, CLOGGED (N897NN)
- [SDR AALA202508221159](https://openairdocs.org/sdr/AALA202508221159), Aug 21, 2025: PUMP, FAILED (N805NN)
- [SDR IXXA2024022101](https://openairdocs.org/sdr/IXXA2024022101), Feb 21, 2024: PRECOOLER, CRACKED (N431AZ)
- [SDR HALA20231211270](https://openairdocs.org/sdr/HALA20231211270), Dec 9, 2023: UNKNOWN, UNKNOWN (N214HA)
- [SDR CALA2023042101211](https://openairdocs.org/sdr/CALA2023042101211), Apr 21, 2023: PUMP, FAULTY (N37420)
- [SDR NACA2023031000001](https://openairdocs.org/sdr/NACA2023031000001), Mar 10, 2023: UNKNOWN, UNKNOWN (N379CX)
- [SDR NACA2023030800001](https://openairdocs.org/sdr/NACA2023030800001), Mar 8, 2023: UNKNOWN, UNKNOWN (N351CM)
- [SDR NI1R552PC030623](https://openairdocs.org/sdr/NI1R552PC030623), Mar 6, 2023: OIL COOLER, CRACKED (N552PC)
- [SDR HALA202303060034](https://openairdocs.org/sdr/HALA202303060034), Mar 3, 2023: NONE, NONE (N230HA)
- [SDR 2023FA0000104](https://openairdocs.org/sdr/2023FA0000104), Mar 1, 2023: FUEL/OIL COOLER, FAILED (N80VM)
- [SDR SWAA2023021300477](https://openairdocs.org/sdr/SWAA2023021300477), Feb 7, 2023: PUMP, STALLED (N295WN)
- [SDR ASAA2022120541063](https://openairdocs.org/sdr/ASAA2022120541063), Dec 5, 2022: HEAT EXCHANGER, LEAKING (N464AS)
- [SDR CALA2022071501768](https://openairdocs.org/sdr/CALA2022071501768), Jul 15, 2022: STRAINER, BROKEN (N2332U)
- [SDR UIEA2022061300581](https://openairdocs.org/sdr/UIEA2022061300581), Jun 13, 2022: FUEL FILTER, INSTALLED (N664GT)
- [SDR ASAA2022051638356](https://openairdocs.org/sdr/ASAA2022051638356), May 16, 2022: SERVO, LEAKING (N433AS)
- [SDR NACA2022051200002](https://openairdocs.org/sdr/NACA2022051200002), May 12, 2022: SWITCH, UNKNOWN (N399CM)
- [SDR CALA2022042901097](https://openairdocs.org/sdr/CALA2022042901097), Apr 27, 2022: HYDROMECH UNIT, FAILED (N37474)
- [SDR KCSA2022041505](https://openairdocs.org/sdr/KCSA2022041505), Apr 15, 2022: NONE, NONE (N739DH)
- [SDR QXEA2022031800119](https://openairdocs.org/sdr/QXEA2022031800119), Mar 17, 2022: NONE, LEAKING (N635QX)
- [SDR NACA2022011800001](https://openairdocs.org/sdr/NACA2022011800001), Jan 18, 2022: PUMP, FAILED (N351CM)
- [SDR 2022F00070](https://openairdocs.org/sdr/2022F00070), Dec 1, 2021: FUEL NOZZLE, NONE
- [SDR UIEA2021110102311](https://openairdocs.org/sdr/UIEA2021110102311), Oct 26, 2021: NONE, NONE (N663GT)
- [SDR NACA20211014001](https://openairdocs.org/sdr/NACA20211014001), Oct 14, 2021: NONE, NONE (N321CM)
- [SDR AALA202110153208](https://openairdocs.org/sdr/AALA202110153208), Oct 13, 2021: HEAT EXCHANGER, UNSERVICEABLE (N947NN)
- [SDR 2021F00395](https://openairdocs.org/sdr/2021F00395), Oct 4, 2021: HEAT EXCHANGER, LEAKING
- [SDR CALA2021100401770](https://openairdocs.org/sdr/CALA2021100401770), Oct 2, 2021: OIL COOLER, LEAKING (N485UA)
- [SDR ASMF202110019](https://openairdocs.org/sdr/ASMF202110019), Sep 9, 2021: FUEL HEATER, LEAKING (N368AR)
- [SDR 2021F00227](https://openairdocs.org/sdr/2021F00227), Sep 9, 2021: FUEL HEATER, LEAKING (N368AR)
- [SDR ASAA2021082535796](https://openairdocs.org/sdr/ASAA2021082535796), Aug 25, 2021: HEAT EXCHANGER, FAILED (N581AS)
- [SDR UIEA2021042701009](https://openairdocs.org/sdr/UIEA2021042701009), Apr 27, 2021: VALVE, LEAKING (N1511A)
- [SDR ASAA2021040934550](https://openairdocs.org/sdr/ASAA2021040934550), Apr 9, 2021: HEAT EXCHANGER, LEAKING (N533AS)
- [SDR ASAA2021040834533](https://openairdocs.org/sdr/ASAA2021040834533), Apr 8, 2021: HEAT EXCHANGER, LEAKING (N431AS)
- [SDR ASAA2021040634520](https://openairdocs.org/sdr/ASAA2021040634520), Apr 6, 2021: HEAT EXCHANGER, LEAKING (N433AS)
- [SDR ASAA2021040334498](https://openairdocs.org/sdr/ASAA2021040334498), Apr 3, 2021: HEAT EXCHANGER, LEAKING (N431AS)
- [SDR HALA2021030300024](https://openairdocs.org/sdr/HALA2021030300024), Mar 1, 2021: BRACKET, CRACKED (N383HA)
- [SDR SIMA20210212001](https://openairdocs.org/sdr/SIMA20210212001), Feb 12, 2021: FUEL/OIL COOLER, MALFUNCTIONED (N607AE)
- [SDR HALA2021020800015](https://openairdocs.org/sdr/HALA2021020800015), Feb 7, 2021: FUEL/OIL COOLER, DAMAGED (N360HA)
- [SDR UIEA2020121402559](https://openairdocs.org/sdr/UIEA2020121402559), Dec 14, 2020: GASKET, LEAKING (N645GT)
- [SDR ASAA2020121233687](https://openairdocs.org/sdr/ASAA2020121233687), Dec 12, 2020: HEAT EXCHANGER, DAMAGED (N584AS)
- [SDR ASAA2020111433556](https://openairdocs.org/sdr/ASAA2020111433556), Nov 14, 2020: HEATER, LEAKING (N467AS)
- [SDR ASAA2020102933448](https://openairdocs.org/sdr/ASAA2020102933448), Oct 29, 2020: HEAT EXCHANGER, LEAKING (N403AS)
- [SDR UIEA2020101602263](https://openairdocs.org/sdr/UIEA2020101602263), Oct 14, 2020: PACKING, LEAKING (N1321A)
- [SDR ASAA2020080532992](https://openairdocs.org/sdr/ASAA2020080532992), Aug 5, 2020: HEAT EXCHANGER, LEAKING (N531AS)
- [SDR HALA2020073100163](https://openairdocs.org/sdr/HALA2020073100163), Jul 30, 2020: OIL COOLER, LEAKING (N384HA)
- [SDR AALA2020070989013](https://openairdocs.org/sdr/AALA2020070989013), Jul 7, 2020: O-RING, DAMAGED (N917UY)
- [SDR UIEA2020031700474](https://openairdocs.org/sdr/UIEA2020031700474), Mar 16, 2020: FUEL FILTER, FAULTED (N1709A)
- [SDR SWAA2020031642447](https://openairdocs.org/sdr/SWAA2020031642447), Mar 12, 2020: SERVO, FAULTY (N700GS)
- [SDR ASAA2020021732211](https://openairdocs.org/sdr/ASAA2020021732211), Feb 17, 2020: HEAT EXCHANGER, LEAKING (N568AS)

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