# SDR HNAA2021081900388

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 18, 2021
- Submitted: August 19, 2021
- Operation: Air carrier
- Aircraft: [N641AE](https://openairdocs.org/aircraft/N641AE), registered now
- Make and model: Emb EMB-145LR
- Registry model: [EMB EMB-145LR](https://openairdocs.org/model/embraer-emb-145lr) (OpenAirDocs)
- Aircraft serial: 145191
- Aircraft time: 47,913 hours, 44,743 cycles
- System (JASC): [2420 · AC Generation System](https://openairdocs.org/jasc/2420)
- Part: Dau
- Condition: Faulted
- Location: Nr 1
- 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/HNAA2021081900388

## Discrepancy

LOSS OF 115VAC BUSS IN FLIGHT WITH LOSS OF FMS1, PFD1, MFD2.   R & R NR 1 DAU IAW AMM 34-41-01.OPS CHECK GOOD AT THIS TIME.INSPECTED ELECTRICAL CONNECTIONS GOING TO AVIONICS MASTER 1 NO DEFECTS NOTED AT THIS TIME.PERFORMED OPS CHECK OF AVIONICS MASTER SYSTEM IAW AMM 24-26-00 OPS CHECK GOOD AT THIS TIME OK FOR SERVICE.

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