# SDR CALA2026061617125

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 13, 2026
- Submitted: June 17, 2026
- Operation: Air carrier
- Aircraft: [N77588](https://openairdocs.org/aircraft/N77588), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 43446
- Aircraft time: 5,705 hours, 1,848 cycles
- System (JASC): [3830 · Waste Disposal System](https://openairdocs.org/jasc/3830)
- Part: Toilet
- Part number: 410038700303
- Part serial: 6155
- Condition: Faulted
- Location: Zone 900
- Part time: 5,691 hours, 1,843 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026061617125

## Discrepancy

ALL LAVS QUIT FLUSHING IN FLIGHT.   MID LAV HAD A CONTINUOUS VACUUM THROUGHOUT FLIGHT. FOUND LAV VACUUM MOTOR CIRCUIT BREAKER TRIPPED. RESET C/B, ALL LAVS FLUSHED WITH NORMAL VACUUM DRAW. ALL THE LAVS HAD WASTE WHICH FLUSHED UPON ACTIVATING A FLUSH CYCLE. STRONGLY SUSPECT MID LAV FLUSH VALVE INTERMITTENTLY STICKING OPEN WHICH CAUSED VACUUM BLOWER BREAKER TO TRIP DUE TO CONTINUOUS OPS. PULLED VACUUM BLOWER MOTOR & LEFT OUT FOR MX. R & R LAV T TOLIET ASSY IAW AMM 38-32-01, OPS CHKD GOOD, VERIFIED ALL OTHER LAV'S OPS NORMAL

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