# SDR AALA202110181869

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 15, 2021
- Submitted: October 18, 2021
- Operation: Air carrier
- Aircraft: [N753AN](https://openairdocs.org/aircraft/N753AN), registered now
- Make and model: Boeing 777223
- Aircraft serial: 30261
- Aircraft time: 78,548 hours, 9,981 cycles
- System (JASC): [3830 · Waste Disposal System](https://openairdocs.org/jasc/3830)
- Part: Relay
- Part number: HA2N
- Condition: Faulty
- Location: Zone 100 - Fuse
- Stage of operation: CR
- How discovered: V
- Nature of condition: G
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202110181869

## Discrepancy

AIRCRAFT WAS GROUNDED: MULTIPLE LAVATORIES INOPERATIVE, FLIGHT DIVERTED TO BOS. REPLACED 2EA VACUUM CHECK VALVES IAW AMM 38-32-07, 2EA BAROMETRIC SWITCHES IAW AMM 38-32-51-40, AND RELAY K38004 IAW SWPM 20-81-11, LEAK AND OPS CHECK GOOD (SEE ALSO AALA202110188983, AALA202110184766, AALA202110185635, AALA202110186042).

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