# JASC 3830: Waste Disposal System

- Type: JASC system/component code (FAA)
- ATA chapter: 38 Water/Waste
- Title in the code table: WASTE DISPOSAL SYSTEM
- Service difficulty reports: 747
- FAA code table: https://www.faa.gov/sites/faa.gov/files/JASC_Code.pdf#page=43
- Page: https://openairdocs.org/jasc/3830

## What it covers

The system and components used for the disposal of water and waste. Includes wash basins, water closets, flush systems and collection tanks. Typical parts are valve, flush motor, lines, timer, etc.

## Service difficulty reports (747, newest 50)

- [SDR CALA2026101520386](https://openairdocs.org/sdr/CALA2026101520386), Oct 13, 2026: Airbus A321271NX. SEAL. LEAKING. AFT FUSELAGE FR57 BOTTOM HAS EVIDENCE OF BLUE WATER LEAK AT SKIN DRAIN VALVE. CLEANED PER ECRA 2011-01000 IDENIFIED SOUR (N14529)
- [SDR CALA2026101320323](https://openairdocs.org/sdr/CALA2026101320323), Oct 12, 2026: Airbus A320232. LAVATORY. ODOR. FORWARD LAV - TOXIC ODOR WITH A YELLOWISH FLUID LEAKING OVER THE FLOOR INSPECTED LAVATORY FOR ANY LEAKS. NO LEAKS FOUND  (N452UA)
- [SDR CALA2026101320316](https://openairdocs.org/sdr/CALA2026101320316), Oct 10, 2026: Boeing 777222. LAVATORY. INOPERATIVE. ALL LAVS INOPERATIVE, AIRBORNE FOUND THREE CIRCUT BREAKERS OPEN P110 N (17). P210 N(6) AND N(7). PREFORMED GROUND LAV OP (N785UA)
- [SDR CALA2026101320318](https://openairdocs.org/sdr/CALA2026101320318), Oct 9, 2026: Boeing 7378. LAVATORY. MALFUNCTIONED. NO LAVS FLUSHING PROPERLY APPLIED MEL 38-30-01-01. MAIN. PROCEDURE C/W APPROVED MEL 3830E.VACUUM BLOWER INOPERATIVE AND  (N17279)
- [SDR AALA202610093939](https://openairdocs.org/sdr/AALA202610093939), Oct 9, 2026: Boeing 777223. SENSOR. INOPERATIVE. AIRCRAFT WAS GROUNDED: PAN-PAN DECLARED; AIRCRAFT LANDED OVERWEIGHT WITHOUT INCIDENT -- IMMEDIATELY AFTER REACHING CRUIS (N772AN)
- [SDR CALA2026092919996](https://openairdocs.org/sdr/CALA2026092919996), Sep 28, 2026: Boeing 7379. TOILET. LEAKING. WATER RAN ALL OVER AFT GALLEY FLOOR DURING THE FLIGHT EVEN THOUGH WATER VALVE WAS OFF. REF TO ECRA 2011-01000 GALLEY SPI (N37516)
- [SDR CALA2026091619459](https://openairdocs.org/sdr/CALA2026091619459), Sep 14, 2026: Boeing 757224. LAVATORY. ODOR. ACFT REFUSED FOR LAV ODOR STARTING ROW 30 AND AFT. PARTICUARLY BAD AT ROW 35 PERFORMED AFT LAVS TOILET SYSTEM INSPECTION (N14102)
- [SDR CALA2026091519425](https://openairdocs.org/sdr/CALA2026091519425), Sep 12, 2026: Boeing 7379. DRAIN VALVE. LEAKING. SUSPECTED LEAK NEAR AFT LAV ACCOMPLISHED STEP 1, IMMEDIATE CLEANUP REQUIRES STEP 2 IN DEPTH CLEAN UP WITHIN 7 DAYS UPON  (N37555)
- [SDR CALA2026091419387](https://openairdocs.org/sdr/CALA2026091419387), Sep 12, 2026: Boeing 757224. LAVATORY. ODOR. ACFT CABIN HAS RANCID ODOR. FULL LAV SERVICE COMPLETED. WALKAROUND FOUND VERY STRONG ODOR COMING OUT OF OUTFLOW VALVE. G (N13110)
- [SDR CALA2026091519456](https://openairdocs.org/sdr/CALA2026091519456), Sep 11, 2026: Boeing 757224. TOILET. INOPERATIVE. AFT LEFT LAV WILL NOT FLUSH AND IS INOP. AFT LEFT LAV SERVICED WITH BLUE WATER AND OPS CHECKED OK IAW B757 AMM 38-32 (N34131)
- [SDR CALA2026091119375](https://openairdocs.org/sdr/CALA2026091119375), Sep 9, 2026: Boeing 757224. TOILET. INOPERATIVE. LAVATORY 1R BROKEN AND WILL NOT FLUSH. CLEANED TOILET FLUSH MOTOR FILTER REF FIM 38 30 05 23. OPS CHKD GOOD. (N33132)
- [SDR CALA2026090719291](https://openairdocs.org/sdr/CALA2026090719291), Sep 3, 2026: Airbus A321271NX. GENERATOR. FAULTED. LAVATORY VACUUM PUMP MAKING A GRINDING NOISE. VACUUM GENERATOR DEACTIVATED IAW MEL38-30-01-01 (M). VACUUM SYS AND VACUUM (N34535)
- [SDR CALA2026090219190](https://openairdocs.org/sdr/CALA2026090219190), Aug 31, 2026: Boeing 777222. WASTE TANK. FAILED. TOILET FLUSH SYS INOP. LAV 2R & LAV 4L. INDICATOR SAYS LAV TANKS FULL. OPENED AFT CARGO, CHKD LOGIC CONTROL MODULE OF WA (N796UA)
- [SDR AALA202608275996](https://openairdocs.org/sdr/AALA202608275996), Aug 26, 2026: Boeing 777223. TOILET. INOPERATIVE. AIRCRAFT WAS GROUNDED: LAVS 2L,2R,4R WASTE TANK STATUS WENT TO 7/8 FULL (RED) LAV 2R FLUSHES CONTINUOUSLY AFTER THAT. LA (N795AN)
- [SDR CALA2026082618929](https://openairdocs.org/sdr/CALA2026082618929), Aug 25, 2026: Boeing 737824. TOILET. FAULTED. ROW 36 AND AFT FLOOR WATERLOGGED AND AN UNPLEASANT ODOR. STANDING WATER IN AFT LAV D. FOUND LAV D TOILET OVERFLOWING. AP (N14249)
- [SDR CALA2026082318805](https://openairdocs.org/sdr/CALA2026082318805), Aug 20, 2026: Boeing 737824. FLUID. ODOR. FWD LAV SUSPECTED OF LEAKING SEWAGE ON FLOOR. FA CLEANED FLOOR X 3 REPORTS STRONG SMELL REQUESTING MEL 3802D FOR INOP FW (N35260)
- [SDR AALA202608204842](https://openairdocs.org/sdr/AALA202608204842), Aug 19, 2026: Boeing 737823. SILL DRAIN. CLOGGED. AIRCRAFT WAS GROUNDED: THE SMELL OF ROTTEN EGGS IN THE AFT GALLEY UNDER LOW POWER SETTINGS. THIS OCCURS ON THE GROUND AN (N856NN)
- [SDR DALA2026090304984](https://openairdocs.org/sdr/DALA2026090304984), Aug 13, 2026: Airbus A330941. WASTE TANK. OVERFLOW. DIV / DE - INTO LHR DUE TO 3L LAV OVERFLOWING. 3L LAV PLACED ON MEL, THEN REPLACED TOILET ASSEMBLY. OPS AND LEAK CHECK G (N410DZ)
- [SDR CALA2026080918411](https://openairdocs.org/sdr/CALA2026080918411), Aug 5, 2026: Boeing 757224. WASTE TANK. FAULTY. FWD LAV LEAKING BLUE FLUID LAV DRAINED FWD LAV INOPERATIVE. REMOVED AND REPLACED LAV A TOILET TANK IAW AMM 38-32-01. OPS (N33132)
- [SDR IPXA2026073136448](https://openairdocs.org/sdr/IPXA2026073136448), Jul 30, 2026: Boeing 7478F. BLOWER. INOPERATIVE. AIR TURN BACK, PRIOR TO DEPARTURE WE WERE ADVISED BY MAINTENANCE CONTROL THAT THE TOILET WOULD SUCTION FEED ABOVE 16000Â (N609UP)
- [SDR CALA2026073118136](https://openairdocs.org/sdr/CALA2026073118136), Jul 29, 2026: Boeing 757224. TIMER. FAULTED. LAVS K & S INOP DIVERSION & HAS HISTORY. UNLOCKED UPON ARRIVING TO THE ACFT, INITIAL EVALUATION SHOWED THAT S LAV HALF O (N34131)
- [SDR CALA2026073118135](https://openairdocs.org/sdr/CALA2026073118135), Jul 28, 2026: Boeing 737924ER. TOILET. INOPERATIVE. LAV ARE NOT WORKING NONE FLUSHED UP AT ALT REF L/P 9753575 MEL LAV BLOWER SYSTEM, BLOWER WAS REPLACED ON RON. REMOVED &  (N39463)
- [SDR CALA2026072918094](https://openairdocs.org/sdr/CALA2026072918094), Jul 28, 2026: Boeing 737824. COUPLING. DETACHED. REMOVED FORWARD CARGO COMPARTMENT AFT BULKHEAD LINER PANELS. FOUND WASTE LINE CLAMP COUPLING OFF OF THE LINE BEHIND FORW (N17233)
- [SDR AALA202607209668](https://openairdocs.org/sdr/AALA202607209668), Jul 18, 2026: Boeing 7378. CONTROL UNIT. INOPERATIVE. AIRCRAFT WAS GROUNDED: ALL 3 LAVS WILL NOT FLUSH AND ARE ALMOST OVERFULL. DECESION MADE TO DIVERT TO ORD, NO EMERGENCY D (N321TG)
- [SDR CALA2026072017893](https://openairdocs.org/sdr/CALA2026072017893), Jul 16, 2026: Airbus A319132. COFFEEMAKER. LEAKING. WATER LEAKING FOWARD GALLEY. SUBSTANTIAL LEAK STILL. STARTED OFF SMALL. GETTING BIGGER. ISOLATED "LEAK" TO FROM UNDER TH (N878UA)
- [SDR AALA202607066545](https://openairdocs.org/sdr/AALA202607066545), Jun 30, 2026: Airbus A321253NX. TOILET. LEAKING. AIRCRAFT WAS GROUNDED: LAVATORY "D" HAS AN OVER HEATING SMELL. IT HAS MORE OF AN ODOR AFTER EACH FLUSH. LAVATORY "D" IS  (N468AN)
- [SDR QXEA2026070800161](https://openairdocs.org/sdr/QXEA2026070800161), Jun 29, 2026: Emb ERJ170200LR. NOZZLE. MALFUNCTIONED. FLIGHT 2247. RAMP REPORTS WASTE SYSTEM WILL NOT ACCEPT RINSE FLUID INTO THE AIRCRAFT PLACED ON MEL BUT ON NEXT FLIGHT WI (N632QX)
- [SDR CALA2026062917369](https://openairdocs.org/sdr/CALA2026062917369), Jun 24, 2026: Boeing 757224. LAVATORY. FAULTED. MID LAV UNABLE TO FLUSH TOILET PAPER. MOTOR AND BLUE JUICE OPS NORMAL MID AND BOTH REAR LAVATORIES FOUND TO BE OVERSERVI (N13110)
- [SDR CALA2026061617125](https://openairdocs.org/sdr/CALA2026061617125), Jun 13, 2026: Boeing 7379. TOILET. FAULTED. ALL LAVS QUIT FLUSHING IN FLIGHT. MID LAV HAD A CONTINUOUS VACUUM THROUGHOUT FLIGHT. FOUND LAV VACUUM MOTOR CIRCUIT BREA (N77588)
- [SDR AALA202606150492](https://openairdocs.org/sdr/AALA202606150492), Jun 13, 2026: Boeing 7378. CIRCUIT BREAKER. PULLED. AIRCRAFT WAS GROUNDED: ALL THREE LAVS ON AIRCRAFT WILL NOT FLUSH. VACUUM BLOWER PREVIOUSLY REPLACED ON JUN 14. REPORTED  (N338RS)
- [SDR CALA2026060816916](https://openairdocs.org/sdr/CALA2026060816916), Jun 6, 2026: Boeing 767424ER. VALVE. STUCK. L1 LAVATORY CONTINUOUSLY FLUSHING FLUSH VALVE STUCK IN OPEN POSITION. MANUALLY CLOSED. WATER IS SHUT OFF. TOILET IS INOP (N66051)
- [SDR CALA2026060816862](https://openairdocs.org/sdr/CALA2026060816862), Jun 5, 2026: Boeing 777300ER. LAVATORY. FULL. BAD LAVATORY ODOR BETWEEN DOORS 4 AND 5 SERVICED LAVATORIES BETEWEEN DOOR 4 AND 5 PER AMM 38-32-00. OPS CHECKS GOOD. NO  (N2136U)
- [SDR IPXA2026060510499](https://openairdocs.org/sdr/IPXA2026060510499), Jun 4, 2026: Boeing 75724APF. VALVE. FAULTED. DURING REQUEST OF LEAK CHECK VERIFICATION. FOUND FWD RHS TOILET/WASTE PANEL DRAIN VALVE ASSEMBLY, PAN ASSY (INTERNAL AND (N465UP)
- [SDR WX0A2026052732825](https://openairdocs.org/sdr/WX0A2026052732825), May 21, 2026: Airbus A319111. TOILET. CORRODED. (AIRCRAFT NOT GROUNDED) (DEFECT DISCOVERED DURING THE AC HEAVY MX VISIT) NRC 2000-0003: AFT LAVATORY TOILET CORRODED. AF (N328NV)
- [SDR CALA2026051916382](https://openairdocs.org/sdr/CALA2026051916382), May 16, 2026: Boeing 757224. VENT. FAULTED. LAV AT 4L IS LEAKING BLUE FLUID WHICH MAY BE CAUSING FOUL SMELL FROM PREVIOUS WRITE UP FOUND FRAYED AIR VENT TUBE RESPON (N12114)
- [SDR CALA2026051516294](https://openairdocs.org/sdr/CALA2026051516294), May 12, 2026: Boeing 7379. WASTE TANK. FULL. NO LAVS FLUSH. WASTE SHOWS FULL. WAS VERIFIED EMPTY AT DEPARTURE POINT FOUND WASTER TANK WAS FULL NO FAULT DETECT AT THI (N77582)
- [SDR CALA2026050515976](https://openairdocs.org/sdr/CALA2026050515976), May 1, 2026: Boeing 7379. TOILET. LEAKING. FAS REPORT ODOR IN AFT GALLEY. FOUL LIQUID SEEPING FROM AFT LE FT LAV ONTO FLOOR. INSPECTED FOUND NO SIGNS OF LEAKS. AS  (N37534)
- [SDR SWAA2026043093313](https://openairdocs.org/sdr/SWAA2026043093313), Apr 27, 2026: Boeing 7378. UNKNOWN. ODOR. BELOW 10;000 FT MSL ENTIRE AIRPLANE HAS TREMENDOUS AWFUL SEWER SMELL. PERFORMED OPS CHECK OF 3 EA LAV`S IAW AMM 38-32-00 (N8872Q)
- [SDR AALA202604274467](https://openairdocs.org/sdr/AALA202604274467), Apr 26, 2026: Boeing 737823. SLEEVE. LEAKING. AIRCRAFT WAS GROUNDED: REPEATED WRITE-UP. VERY STRONG URINE SMELL PERSISTS FROM ROW 25 ALL THE WAY TO THE BACK OF THE AI (N997NN)
- [SDR AALA202604274937](https://openairdocs.org/sdr/AALA202604274937), Apr 26, 2026: Boeing 737823. O-RING. LEAKING. AIRCRAFT WAS GROUNDED: REPEATED WRITE-UP. VERY STRONG URINE SMELL PERSISTS FROM ROW 25 ALL THE WAY TO THE BACK OF THE AI (N997NN)
- [SDR AALA202604274213](https://openairdocs.org/sdr/AALA202604274213), Apr 26, 2026: Boeing 737823. O-RING. LEAKING. AIRCRAFT WAS GROUNDED: REPEATED WRITE-UP. VERY STRONG URINE SMELL PERSISTS FROM ROW 25 ALL THE WAY TO THE BACK OF THE AI (N997NN)
- [SDR SWAA2026042792801](https://openairdocs.org/sdr/SWAA2026042792801), Apr 24, 2026: Boeing 7378H4. CLAMP. LEAKING. STRONG ODOR FROM FWD LAVATORY AS WELL AS BROWN FLUID ON LAVATORY FLOOR. CLEANED AREA SHUT OFF WATER TO FWD LAV. NO FURTH (N8600F)
- [SDR CALA2026042315654](https://openairdocs.org/sdr/CALA2026042315654), Apr 20, 2026: Boeing 777300ER. SINK. LEAKING. LAV 3L SINK OVERFLOWED WITH BROWN WATER ON CLIMBOUT CREW DEBRIEFED. STATED 3L LAV SINK LEAKED AT 22000FT BEFORE STOPPING (N2136U)
- [SDR CALA2026042215596](https://openairdocs.org/sdr/CALA2026042215596), Apr 20, 2026: Boeing 7379. CONTROL MODULE. FAULTY. CREW REPORTED ALL TOILETS WOULD NOT FLUSH AIRBORNE FOUND CB C11 VACUUM WASTE CONT OPEN ON P91 PANEL SEE PICTURE ATTACHED (N77588)
- [SDR YENA2026042100417](https://openairdocs.org/sdr/YENA2026042100417), Apr 18, 2026: Airbus A321271N. TOILET. ODOR. FLT#224, LAX-JFK. FOUL ODOR REPORTED BY INFLIGHT ON SHORT FINAL APPR INTO JFK; COMPPLIED WITH INFO NOTICE 2017-T015 STEP (N2180J)
- [SDR AALA202604099171](https://openairdocs.org/sdr/AALA202604099171), Apr 6, 2026: Boeing 777223. TOILET. FAULTED. AIRCRAFT WAS GROUNDED: ALL TOILETS CONTINUSILY FLUSH IN FLIGHT. DECESION MADE TO RETURN BACK TO MIA FLIGHT DECLARED AN E (N776AN)
- [SDR AALA202603276348](https://openairdocs.org/sdr/AALA202603276348), Mar 23, 2026: Boeing 737823. INSULATION. SOILED. AIRCRAFT WAS NOT GROUNDED: REPEATED ISSUES WITH DURING CRUISE PASSENGERS COMPLAINING OF STRONG ODOR COMING FROM BUSINESS (N930AN)
- [SDR AALA202603279349](https://openairdocs.org/sdr/AALA202603279349), Mar 23, 2026: Boeing 737823. DRAIN LINE. TORN. AIRCRAFT WAS NOT GROUNDED: REPEATED ISSUES WITH DURING CRUISE PASSENGERS COMPLAINING OF STRONG ODOR COMING FROM BUSINESS (N930AN)
- [SDR AALA202603275592](https://openairdocs.org/sdr/AALA202603275592), Mar 23, 2026: Boeing 737823. DRAIN LINE. COLLAPSED. AIRCRAFT WAS NOT GROUNDED: REPEATED ISSUES WITH DURING CRUISE PASSENGERS COMPLAINING OF STRONG ODOR COMING FROM BUSINESS (N930AN)
- [SDR AALA202603276981](https://openairdocs.org/sdr/AALA202603276981), Mar 23, 2026: Boeing 737823. TUBE. CLOGGED. AIRCRAFT WAS NOT GROUNDED: REPEATED ISSUES WITH DURING CRUISE PASSENGERS COMPLAINING OF STRONG ODOR COMING FROM BUSINESS (N930AN)

All 747: https://openairdocs.org/jasc/3830/reports.md

## Other codes in chapter 38

- [JASC 3800](https://openairdocs.org/jasc/3800): Water and Waste System (226 reports)
- [JASC 3810](https://openairdocs.org/jasc/3810): Potable Water System (418 reports)
- [JASC 3820](https://openairdocs.org/jasc/3820): Wash Water System (83 reports)
- [JASC 3840](https://openairdocs.org/jasc/3840): Air Supply (Water Pressure System) (38 reports)
- [JASC 3897](https://openairdocs.org/jasc/3897): Water/Waste System Wiring (63 reports)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.