# SDR AALA202210045931

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 3, 2022
- Submitted: October 4, 2022
- Operation: Air carrier
- Aircraft: [N871AY](https://openairdocs.org/aircraft/N871AY), registered now
- Make and model: Boeing 787-8
- Registry model: [Boeing 787-8](https://openairdocs.org/model/boeing-787-8) (OpenAirDocs)
- Aircraft serial: 65991
- Aircraft time: 7,367 hours, 1,240 cycles
- System (JASC): [2610 · Detection System](https://openairdocs.org/jasc/2610)
- Part: Concentrator
- Part number: 302950101
- Part serial: 3385
- Condition: Faulted
- Location: Nr 1 Eng Edc
- Part time: 7,367 hours, 1,240 cycles
- Stage of operation: CR
- How discovered: V
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202210045931

## Discrepancy

AIRCRAFT WAS GROUNDED: DURING CRUISE MULTIPLE ENGINE #1 STATUS MESSAGES DISPLAYED. Ï¿½ENGINE REVERSER LEFT; HYDRAULIC VALVE SUPPLY PRIMARY PUMP LEFT; HYDRAULIC VALVE AUTO BLEED RESERVOIR LEFT; DETECTOR FIRE 2A, 3A, 4A, ENGINE LEFT.Ï¿½ FLIGHT DECLARED AN EMERGENCY, RETURNED TO DFW, LANDING SAFELY. REPLACED ENGINE #1 MAIN ENGINE DATA CONCENTRATOR (MEDC) PER AMM 26-10-01. MESSAGES CLEARED. ACCOMPLISHED SATISFACTORY OPERATIONAL CHECK.

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