# JASC 4920: APU Core Engine

- Type: JASC system/component code (FAA)
- ATA chapter: 49 Airborne Auxiliary Power
- Title in the code table: APU CORE ENGINE
- Service difficulty reports: 2,429
- FAA code table: https://www.faa.gov/sites/faa.gov/files/JASC_Code.pdf#page=44
- Page: https://openairdocs.org/jasc/4920

## What it covers

For reports of basic engine defects such as compressor, turbine, cases other than specific systems shown in other APU sub-systems such as fuel, ignition, exhaust, starting and controls. The APU make and model should be included if available. Typical parts are turbine, bearing, seal, impeller, blade, case, burner can, etc.

## Latest service difficulty reports

- [SDR WX0A2026100532970](https://openairdocs.org/sdr/WX0A2026100532970), Oct 4, 2026: INLET, CONTAMINATED (N194NV)
- [SDR CALA2026100620142](https://openairdocs.org/sdr/CALA2026100620142), Oct 3, 2026: APU, FAULTED (N76514)
- [SDR ASAA2026100267268](https://openairdocs.org/sdr/ASAA2026100267268), Oct 2, 2026: APU, ODOR (N488HA)
- [SDR ASAA2026100167208](https://openairdocs.org/sdr/ASAA2026100167208), Oct 1, 2026: COOLING FAN, FAILED (N488HA)
- [SDR YENA2026100200920](https://openairdocs.org/sdr/YENA2026100200920), Oct 1, 2026: COMPRESSOR, CONTAMINATED (N519JB)
- [SDR CALA2026090419236](https://openairdocs.org/sdr/CALA2026090419236), Sep 1, 2026: BLEED VALVE, FAULTED (N36207)
- [SDR AALA202608216718](https://openairdocs.org/sdr/AALA202608216718), Aug 19, 2026: PLENUM, CONTAMINATED (N829AW)
- [SDR ABXA20260814362](https://openairdocs.org/sdr/ABXA20260814362), Aug 14, 2026: APU, SHUTDOWN (N487CM)
- [SDR SWAA2026081325383](https://openairdocs.org/sdr/SWAA2026081325383), Aug 9, 2026: APU, SHUTDOWN (N8612K)
- [SDR SWAA2026081359676](https://openairdocs.org/sdr/SWAA2026081359676), Aug 9, 2026: FAULT CODE, AUTO SHUTDOWN (N8880G)
- [SDR SCNA20260806339](https://openairdocs.org/sdr/SCNA20260806339), Aug 4, 2026: APU, SMOKE (N846SY)
- [SDR IPXA2026073160624](https://openairdocs.org/sdr/IPXA2026073160624), Jul 31, 2026: APU, SHUTDOWN (N166UP)
- [SDR ABXA20260731345](https://openairdocs.org/sdr/ABXA20260731345), Jul 31, 2026: APU, SHUTDOWN (N651GT)
- [SDR CALA2026072818074](https://openairdocs.org/sdr/CALA2026072818074), Jul 27, 2026: APU, FAULTED (N76065)
- [SDR HNAA2026072400632](https://openairdocs.org/sdr/HNAA2026072400632), Jul 23, 2026: BLEED VALVE, FAULTED (N908AE)
- [SDR SCNA20260713291](https://openairdocs.org/sdr/SCNA20260713291), Jul 11, 2026: APU, DAMAGED (N831SY)
- [SDR SCN2026F00002](https://openairdocs.org/sdr/SCN2026F00002), Jul 11, 2026: APU, FAILED (N831SY)
- [SDR AALA202605253799](https://openairdocs.org/sdr/AALA202605253799), May 22, 2026: PLENUM, ODOR (N9002U)
- [SDR DALA2026051703034](https://openairdocs.org/sdr/DALA2026051703034), May 15, 2026: APU, FUMES (N334DN)
- [SDR I5P2026F00000](https://openairdocs.org/sdr/I5P2026F00000), May 12, 2026: APU, INOPERATIVE (N757QM)
- [SDR AALA202604302696](https://openairdocs.org/sdr/AALA202604302696), Apr 25, 2026: APU, ODOR (N751UW)
- [SDR YENA2026042700431](https://openairdocs.org/sdr/YENA2026042700431), Apr 24, 2026: COMPRESSOR, CONTAMINATED (N595JB)
- [SDR DALA2026042202564](https://openairdocs.org/sdr/DALA2026042202564), Apr 19, 2026: ENGINE, FAILED (N927AT)
- [SDR I5PA2026041775702](https://openairdocs.org/sdr/I5PA2026041775702), Apr 17, 2026: APU, FAULTED (N757QM)
- [SDR WX0A2026040832779](https://openairdocs.org/sdr/WX0A2026040832779), Apr 5, 2026: PLENUM, CONTAMINATED (N203NV)
- [SDR IPXA2026040281014](https://openairdocs.org/sdr/IPXA2026040281014), Apr 1, 2026: APU, INOPERATIVE (N396UP)
- [SDR DALA2026033002096](https://openairdocs.org/sdr/DALA2026033002096), Mar 26, 2026: INLET, DIRTY (N355NW)
- [SDR DALA2026032602016](https://openairdocs.org/sdr/DALA2026032602016), Mar 25, 2026: APU, ODOR (N363NB)
- [SDR CALA2026032314733](https://openairdocs.org/sdr/CALA2026032314733), Mar 19, 2026: APU, FAULTED (N840UA)
- [SDR JJBA20260303001](https://openairdocs.org/sdr/JJBA20260303001), Mar 2, 2026: APU, CONTAMINATED (N17169)
- [SDR FKEA202602230001](https://openairdocs.org/sdr/FKEA202602230001), Feb 17, 2026: TURBINE CASE, CRACKED (N3410)
- [SDR AALA202602129663](https://openairdocs.org/sdr/AALA202602129663), Feb 10, 2026: APU, ODOR (N773XF)
- [SDR DALA2026021701070](https://openairdocs.org/sdr/DALA2026021701070), Feb 9, 2026: INLET, CONTAMINATED (N352NB)
- [SDR DALA2026020300809](https://openairdocs.org/sdr/DALA2026020300809), Jan 29, 2026: APU, DEGRADED (N112DU)
- [SDR ABXA20260128033](https://openairdocs.org/sdr/ABXA20260128033), Jan 28, 2026: APU, SHUTDOWN (N226CY)
- [SDR GTIA2026012939262](https://openairdocs.org/sdr/GTIA2026012939262), Jan 26, 2026: INLET, CONTAMINATED (N644NK)
- [SDR ABXA20260121024](https://openairdocs.org/sdr/ABXA20260121024), Jan 21, 2026: APU, AUTO SHUTDOWN (N764CK)
- [SDR DALA2026011700394](https://openairdocs.org/sdr/DALA2026011700394), Jan 16, 2026: APU, CONTAMINATED (N326NB)
- [SDR CALA2026010612723](https://openairdocs.org/sdr/CALA2026010612723), Jan 5, 2026: APU, FAULTED (N19141)
- [SDR DALA2026010500055](https://openairdocs.org/sdr/DALA2026010500055), Jan 3, 2026: APU, CONTAMINATED (N118DY)
- [SDR AALA202601018483](https://openairdocs.org/sdr/AALA202601018483), Dec 29, 2025: APU, ODOR (N708UW)
- [SDR AALA202601108908](https://openairdocs.org/sdr/AALA202601108908), Dec 27, 2025: APU, CONTAMINATED (N770UW)
- [SDR QXEA2025122900379](https://openairdocs.org/sdr/QXEA2025122900379), Dec 27, 2025: ENGINE, SMOKE (N667QX)
- [SDR CALA2025123012511](https://openairdocs.org/sdr/CALA2025123012511), Dec 26, 2025: ACTUATOR, FAULTED (N485UA)
- [SDR NACA2025121700001](https://openairdocs.org/sdr/NACA2025121700001), Dec 17, 2025: SHUTOFF VALVE, STUCK (N563NC)
- [SDR DXTA2025121506096](https://openairdocs.org/sdr/DXTA2025121506096), Dec 11, 2025: APU, CONTAMINATED (N739QS)
- [SDR DALA2025121209083](https://openairdocs.org/sdr/DALA2025121209083), Dec 11, 2025: APU, CONTAMINATED (N343NB)
- [SDR SWAA2025120442741](https://openairdocs.org/sdr/SWAA2025120442741), Dec 4, 2025: APU, SHUTDOWN (N913WN)
- [SDR CALA2025111411216](https://openairdocs.org/sdr/CALA2025111411216), Nov 11, 2025: INLET DOOR, CORRODED (N17128)
- [SDR DALA2025101507525](https://openairdocs.org/sdr/DALA2025101507525), Oct 13, 2025: INTAKE, CONTAMINATED (N381DZ)

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