What was found
LAVS 1L 2L 2R 3LAFT AND 3R WILL NOT FLUSH. REPLACED VACUUM CHECK VALVE IAW AMM 38-32-07. FOUND ALTITUDE SWITCH 38006 BROKEN. REPLACED BOTH ALTITUDE SWITCHES IAW AMM 38-32-07. SIMULATED AIRCRAFT IN AIR MODE, ALL TOILETS OPS NORMALLY.
- Difficulty date
- January 17, 2026
- Submitted
- January 20, 2026
- Operation
- Air carrier
- Aircraft
- N773UA
- Make and model
- Boeing 777222
- Aircraft serial
- 26929
- Aircraft time
- 109,626 hours, 20,925 cycles
- System (JASC)
- 3830 · Waste Disposal System
- Part
- Pressure Switch
- Part number
- 214C40177
- Condition
- Faulted
- Location
- Zone 900
- Stage of operation
- CL
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.