# SDR CALA2026073118136

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 29, 2026
- Submitted: July 31, 2026
- Operation: Air carrier
- Aircraft: [N34131](https://openairdocs.org/aircraft/N34131), registered now
- Make and model: Boeing 757224
- Aircraft serial: 28971
- Aircraft time: 102,861 hours, 21,937 cycles
- System (JASC): [3830 · Waste Disposal System](https://openairdocs.org/jasc/3830)
- Part: Timer
- Part number: 1A081015511
- Condition: Faulted
- Location: Lavatory
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026073118136

## Discrepancy

LAVS K & S INOP DIVERSION & HAS HISTORY. UNLOCKED UPON ARRIVING TO THE ACFT, INITIAL EVALUATION SHOWED THAT S LAV HALF OF THE TOILET BOWL WAS FLUSHING ADDED 4 GALLONS OF VINEGAR & FLUSHED REPEATEDLY. DEBRIS GOT CLEARED FROM OTHER HALF, LAV S FLUSHES NORMALLY NOW, INITIALLY LAV K WOULD NOT FLUSH AT ALL ADDED 4 GALLONS OF VINEGAR SUSPECTED TO BE EMPTY AS IT WILL SURGE BUT FLUSH NORMALLY FOR THE FIRST COUPLE SECONDS. UPON ARRIVING TO THE ACFT, INITIAL EVALUATION SHOWED THAT S LAV HALF OF THE TOILET BOWL FLUSHING ADDED 4 GALLONS OF VINEGAR & FLUSHED REPEATEDLY. DEBRIS CLEARED FROM OTHER HALF, LAV S FLUSHES NORMALLY NOW, INITIALLY LAV K WOULD NOT FLUSH AT ALL ADDED 4 GALLONS OF VINEGAR SUSPECTED TO BE EMPTY AS IT WILL SURGE BUT FLUSH NORMALLY FOR THE FIRST COUPLE SECONDS. REMOVED AND REPLACED SWITCH TOILET TIMER AT LAV K. TIOLET FLUSHES NUMEROUS TIMES FOR 10 SECS. REF: AMM 38-32-09.  PRESSURIZED ACFT & OPERATED TOILET FLUSH AT ALL LAV'S. S & K, ALL OTHER TOILETS OPERATED NORMALLY IAW AMM 05-51-24.

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