# SDR AALA202605268828

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 25, 2026
- Submitted: May 26, 2026
- Operation: Air carrier
- Aircraft: [N789AN](https://openairdocs.org/aircraft/N789AN), registered now
- Make and model: Boeing 777223
- Aircraft serial: 30252
- Aircraft time: 97,925 hours, 12,738 cycles
- System (JASC): [3150 · Central Warning](https://openairdocs.org/jasc/3150)
- Part: Switch
- Part number: 32500201
- Condition: Faulted
- Location: Zone 200
- 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/AALA202605268828

## Discrepancy

AIRCRAFT WAS NOT GROUNDED:  AN EMERGENCY WAS DECLARED AND THE AIRCRAFT DIVERTED TO LHR DUE FLIGHT CREW REPORTING EICAS MESSAGES FOR BLEED LOSS WING R AND FOR PACK R. THE AIRCRAFT LANDED SAFELY AT LHR.   MAINTENANCE REPLACED RIGHT ENGINE BLEED SWITCH M36113S6. ACCOMPLISHED SATISFACTORY TEST PER AMM TASK 36-10-00-700-804.

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