# JASC 8550: Reciprocating Engine Oil System - Type: JASC system/component code (FAA) - ATA chapter: 85 Reciprocating Engine - Title in the code table: RECIPROCATING ENGINE OIL SYSTEM - Service difficulty reports: 669 - FAA code table: https://www.faa.gov/sites/faa.gov/files/JASC_Code.pdf#page=71 - Page: https://openairdocs.org/jasc/8550 ## What it covers The components and parts that provide oil pressure and distribute lubricating oil within the engine. Includes the plumbing leading to and from the using external systems and components which utilize engine system oil for operation. Does not include the externally mounted oil system storage tanks and connecting lines which are filed in JASC code 7910, or the oil cooler lines, hoses, and drain valves in JASC code 7920. Typical parts are pressure and scavenge pump, impeller, housing, filter, air-oil separator, crankcase breather, screen, element, relief valve, drive gear, adapter, pan, dipstick, cap, propeller governor oil lines, etc. ## Latest service difficulty reports - [SDR 2026FA0000517](https://openairdocs.org/sdr/2026FA0000517), Jun 13, 2026: BEARING, IMPROPER PART (N6789W) - [SDR 2025FA0000541](https://openairdocs.org/sdr/2025FA0000541), Aug 11, 2025: OIL FILTER, OUT OF ALIGNMENT - [SDR 2025FA0000542](https://openairdocs.org/sdr/2025FA0000542), Jul 24, 2025: OIL FILTER, DEFECTIVE - [SDR 2025FA0000733](https://openairdocs.org/sdr/2025FA0000733), Jul 14, 2025: FILTER ADAPTER, BACKED OUT (N3779S) - [SDR N3XR202412190001](https://openairdocs.org/sdr/N3XR202412190001), Dec 16, 2024: BRACKET, DISLODGED (N322ER) - [SDR N3XR20241204002](https://openairdocs.org/sdr/N3XR20241204002), Dec 4, 2024: TRANSDUCER, FLUCTUATES (N460ER) - [SDR N3XR20241204001](https://openairdocs.org/sdr/N3XR20241204001), Dec 4, 2024: TRANSDUCER, FLUCTUATES (N855ER) - [SDR 2023FA0000553](https://openairdocs.org/sdr/2023FA0000553), Jul 13, 2023: OIL FILTER, MISMANUFACTURED - [SDR 2021FA0000304](https://openairdocs.org/sdr/2021FA0000304), Jul 30, 2021: GASKET, FAILED (N2605G) - [SDR GEN202108060001](https://openairdocs.org/sdr/GEN202108060001), Jul 30, 2021: GASKET, DEFORMED (N2605G) - [SDR XGNA2020122400010](https://openairdocs.org/sdr/XGNA2020122400010), Dec 24, 2020: FITTING, BROKEN (N3378Q) - [SDR 2020FA0000528](https://openairdocs.org/sdr/2020FA0000528), Dec 8, 2020: FITTING, BACKED OUT (N969BS) - [SDR 2020FA0000520](https://openairdocs.org/sdr/2020FA0000520), Dec 4, 2020: PUMP, DAMAGED (N9266G) - [SDR 2020FA0000500](https://openairdocs.org/sdr/2020FA0000500), Nov 14, 2020: OIL FILTER, LOOSE (N42064) - [SDR 2020FA0000499](https://openairdocs.org/sdr/2020FA0000499), Nov 13, 2020: OIL FILTER, LOOSE (N42064) - [SDR WIWA2020F00000](https://openairdocs.org/sdr/WIWA2020F00000), Sep 16, 2020: OIL SYSTEM, LEAKING (N9317M) - [SDR IKBR2020071600001](https://openairdocs.org/sdr/IKBR2020071600001), Jul 6, 2020: SHAFT SEAL, DAMAGED (N280SU) - [SDR HYIA20200521001](https://openairdocs.org/sdr/HYIA20200521001), May 20, 2020: ADAPTER, BROKEN (N6875D) - [SDR 2020FA0000054](https://openairdocs.org/sdr/2020FA0000054), Dec 13, 2019: CHECK VALVE, LEAKING (N388JH) - [SDR 2019FA0000411](https://openairdocs.org/sdr/2019FA0000411), Nov 19, 2019: LINE, BROKEN (N6271E) - [SDR 2019FA0000265](https://openairdocs.org/sdr/2019FA0000265), Aug 14, 2019: ENGINE, FAILED (N1768G) - [SDR 2019FA0000237](https://openairdocs.org/sdr/2019FA0000237), Jul 6, 2019: GASKET, DETERIORATED (N2058Q) - [SDR 2020FA0000124](https://openairdocs.org/sdr/2020FA0000124), Apr 30, 2019: SEAL, DEFORMED - [SDR 2019FA0000077](https://openairdocs.org/sdr/2019FA0000077), Mar 17, 2019: GASKET, LOOSE (N523AV) - [SDR EPUA201902260001](https://openairdocs.org/sdr/EPUA201902260001), Feb 20, 2019: SEAL, LEAKING (N44AC) - [SDR HYIA20181024002](https://openairdocs.org/sdr/HYIA20181024002), Oct 22, 2018: BEARING, DAMAGED (N706CA) - [SDR 2018FA0000424](https://openairdocs.org/sdr/2018FA0000424), Oct 16, 2018: RELIEF VALVE, OBSTRUCTED (N782LU) - [SDR 2020FA0000084](https://openairdocs.org/sdr/2020FA0000084), Sep 24, 2018: FILTER ADAPTER, NOT SEATED (N632NV) - [SDR J4YR201807062007](https://openairdocs.org/sdr/J4YR201807062007), Jul 6, 2018: OIL FILTER, DEFECTIVE (N3072) - [SDR 2018FA0000521](https://openairdocs.org/sdr/2018FA0000521), Jul 3, 2018: HOSE, COLLAPSED (N6580W) - [SDR 8HBR20180611014](https://openairdocs.org/sdr/8HBR20180611014), Jun 5, 2018: OIL COOLER, CRACKED (N48440) - [SDR JIKA2017111401](https://openairdocs.org/sdr/JIKA2017111401), Nov 14, 2017: UNKNOWN, MALFUNCTIONED (N29UM) - [SDR NI6R201708260046](https://openairdocs.org/sdr/NI6R201708260046), Aug 26, 2017: WARNING LIGHT, FALSE ACTIVATION (N1386C) - [SDR 2017FA0000383](https://openairdocs.org/sdr/2017FA0000383), Aug 9, 2017: OIL COOLER, DAMAGED (N1068G) - [SDR NI6R201707250043](https://openairdocs.org/sdr/NI6R201707250043), Jul 25, 2017: CHIP DETECTOR, MALFUNCTIONED (N96278) - [SDR 2017FA0000285](https://openairdocs.org/sdr/2017FA0000285), Jul 12, 2017: PRESSURE SWITCH, LEAKING (N424FP) - [SDR 2017FA0000237](https://openairdocs.org/sdr/2017FA0000237), Jun 5, 2017: DIFFUSER, DAMAGED (N267MA) - [SDR P9KA2017032801](https://openairdocs.org/sdr/P9KA2017032801), Mar 22, 2017: OIL COOLER, CRACKED (N749KP) - [SDR 2017FA0000080](https://openairdocs.org/sdr/2017FA0000080), Feb 14, 2017: PUMP, FAILED (N229E) - [SDR 2017F00009](https://openairdocs.org/sdr/2017F00009), Dec 22, 2016: OIL FILTER, LEAKING (N36961) - [SDR 2016FA0000546](https://openairdocs.org/sdr/2016FA0000546), Oct 27, 2016: SHAFT, BROKEN (N59987) - [SDR N3BA201608160001](https://openairdocs.org/sdr/N3BA201608160001), Jul 12, 2016: LINE, CRACKED (N510NE) - [SDR 5HAS2016FA0000302](https://openairdocs.org/sdr/5HAS2016FA0000302), Jun 20, 2016: BYPASS VALVE, DEFECTIVE (N68713) - [SDR HYTA201606060001](https://openairdocs.org/sdr/HYTA201606060001), Jun 6, 2016: RELIEF VALVE, BACKED OUT (N713C) - [SDR 2016FA0000197](https://openairdocs.org/sdr/2016FA0000197), Apr 26, 2016: CHECK VALVE, CLOGGED (N8260W) - [SDR FXTA2016033000150](https://openairdocs.org/sdr/FXTA2016033000150), Mar 29, 2016: GASKET, LEAKING (N4112D) - [SDR 2016FA0000090](https://openairdocs.org/sdr/2016FA0000090), Feb 11, 2016: OIL SYSTEM, OVERTEMP (N4992K) - [SDR 2015FA0000651](https://openairdocs.org/sdr/2015FA0000651), Dec 15, 2015: BUSHING, FAILED - [SDR CA151124009](https://openairdocs.org/sdr/CA151124009), Nov 24, 2015: OIL FILTER, DAMAGED - [SDR 2015FA0000609](https://openairdocs.org/sdr/2015FA0000609), Nov 22, 2015: HOSE, BURNED (N991SB) --- From OpenAirDocs.org, an independent open copy of FAA data. 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