# JASC 3840: Air Supply (Water Pressure System)

- Type: JASC system/component code (FAA)
- ATA chapter: 38 Water/Waste
- Title in the code table: AIR SUPPLY (WATER PRESS. SYSTEM)
- Service difficulty reports: 37
- FAA code table: https://www.faa.gov/sites/faa.gov/files/JASC_Code.pdf#page=43
- Page: https://openairdocs.org/jasc/3840

## What it covers

The system which provides the pressure to distribute potable water to the lavatories, etc. Typical parts are pump, motor, lines, etc.

## Latest service difficulty reports

- [SDR AALA202605154130](https://openairdocs.org/sdr/AALA202605154130), May 13, 2026: SWITCH, FAULTY (N903NN)
- [SDR AALA202605158279](https://openairdocs.org/sdr/AALA202605158279), May 13, 2026: RELAY, FAULTY (N903NN)
- [SDR DALA2026022301259](https://openairdocs.org/sdr/DALA2026022301259), Feb 20, 2026: COMPRESSOR, ODOR (N37700)
- [SDR DALA2026012600593](https://openairdocs.org/sdr/DALA2026012600593), Jan 22, 2026: COMPRESSOR, ODOR (N380DA)
- [SDR DALA2025020400810](https://openairdocs.org/sdr/DALA2025020400810), Feb 2, 2025: COMPRESSOR, SEIZED (N592NW)
- [SDR GTIA2024091738374](https://openairdocs.org/sdr/GTIA2024091738374), Sep 16, 2024: COMPRESSOR, OVERHEATED (N934NK)
- [SDR DALA2023022101308](https://openairdocs.org/sdr/DALA2023022101308), Feb 19, 2023: NONE, NONE (N417DX)
- [SDR DALA2021111106959](https://openairdocs.org/sdr/DALA2021111106959), Nov 11, 2021: NONE, NONE (N409DX)
- [SDR DALA2021060703127](https://openairdocs.org/sdr/DALA2021060703127), Jun 5, 2021: COMPRESSOR, SMOKE (N380DA)
- [SDR DALA2021051102664](https://openairdocs.org/sdr/DALA2021051102664), May 10, 2021: SWITCH, OUT OF POSITION (N407DX)
- [SDR DALA2020030601676](https://openairdocs.org/sdr/DALA2020030601676), Mar 5, 2020: COMPRESSOR, OVERHEATED (N176DZ)
- [SDR DALA2019112286836](https://openairdocs.org/sdr/DALA2019112286836), Nov 15, 2019: COMPRESSOR, FAILED (N1607B)
- [SDR AALA201908219008](https://openairdocs.org/sdr/AALA201908219008), Aug 21, 2019: COMPRESSOR, ODOR (N198UW)
- [SDR DALA2019062573852](https://openairdocs.org/sdr/DALA2019062573852), Jun 8, 2019: COMPRESSOR, FAILED (N185DN)
- [SDR DALA2018032602035](https://openairdocs.org/sdr/DALA2018032602035), Mar 25, 2018: CHECK VALVE, FAILED (N3741S)
- [SDR DALA2016122210072](https://openairdocs.org/sdr/DALA2016122210072), Dec 20, 2016: COMPRESSOR, SEIZED (N315US)
- [SDR DALA2016080405770](https://openairdocs.org/sdr/DALA2016080405770), Aug 2, 2016: COMPRESSOR, OVERHEATED (N974DL)
- [SDR DALA2015111707003](https://openairdocs.org/sdr/DALA2015111707003), Nov 16, 2015: PUMP, ODOR (N913DN)
- [SDR USAA2014021000006](https://openairdocs.org/sdr/USAA2014021000006), Feb 8, 2014: DRAIN VALVE, NOISY (N625AW)
- [SDR USAA2014021000004](https://openairdocs.org/sdr/USAA2014021000004), Feb 7, 2014: BUTTERFLY VALVE, NOISY (N625AW)
- [SDR DALA13055721601](https://openairdocs.org/sdr/DALA13055721601), Oct 26, 2013: COMPRESSOR, ODOR (N169DZ)
- [SDR UALA2013052903730](https://openairdocs.org/sdr/UALA2013052903730), May 29, 2013: COMPRESSOR, NOISY (N206UA)
- [SDR UALA2012102206042](https://openairdocs.org/sdr/UALA2012102206042), Oct 19, 2012: LINE, LOOSE (N781UA)
- [SDR UALA2012031301653](https://openairdocs.org/sdr/UALA2012031301653), Mar 12, 2012: HOSE, LEAKING (N670UA)
- [SDR NWAA093236303](https://openairdocs.org/sdr/NWAA093236303), Sep 16, 2009: COMPRESSOR, FAULTY (N663US)
- [SDR SWAA081027](https://openairdocs.org/sdr/SWAA081027), Feb 23, 2008: COMPRESSOR, FAULTY (N762SW)
- [SDR DL76G070284](https://openairdocs.org/sdr/DL76G070284), Apr 2, 2007: COMPRESSOR, UNSERVICEABLE (N394DL)
- [SDR DL76L050172](https://openairdocs.org/sdr/DL76L050172), Mar 19, 2005: COMPRESSOR, MALFUNCTIONED (N189DN)
- [SDR AUS20040478](https://openairdocs.org/sdr/AUS20040478), Feb 28, 2004: THERMOSTAT, FAILED
- [SDR 99UAL900669](https://openairdocs.org/sdr/99UAL900669), Dec 26, 1999: SWITCH, FAILED (N794UA)
- [SDR DLM11991947](https://openairdocs.org/sdr/DLM11991947), Sep 1, 1999: WATER COMP, FAILED (N806DE)
- [SDR DLM11991944](https://openairdocs.org/sdr/DLM11991944), Sep 1, 1999: CIRCUITE BREAKER, TRIPPED (N814DE)
- [SDR DL76L991409](https://openairdocs.org/sdr/DL76L991409), Jun 22, 1999: COMPRESSOR, OVERHEATED (N197DN)
- [SDR DLM11982096](https://openairdocs.org/sdr/DLM11982096), Oct 8, 1998: COMPRESSOR, SEIZED (N805DE)
- [SDR 98UAL900306](https://openairdocs.org/sdr/98UAL900306), Jul 1, 1998: AIR COMPRESSOR, FAILED (N552UA)
- [SDR 98UAL900090](https://openairdocs.org/sdr/98UAL900090), Feb 25, 1998: COMPRESSOR, CLOGGED (N7452U)
- [SDR 97UAL900342](https://openairdocs.org/sdr/97UAL900342), May 1, 1997: COMPRESSOR, INOPERATIVE (N7252U)

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From OpenAirDocs.org, an independent open copy of FAA data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.