# SDR HNAA2025073100474

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 30, 2025
- Submitted: July 31, 2025
- Operation: Air carrier
- Aircraft: [N905JH](https://openairdocs.org/aircraft/N905JH), registered now
- Make and model: Emb EMB-145LR
- Registry model: [EMB EMB-145LR](https://openairdocs.org/model/embraer-emb-145lr) (OpenAirDocs)
- Aircraft serial: 14500892
- System (JASC): [3100 · Indicating/Recording System](https://openairdocs.org/jasc/3100)
- Part: Dau
- Part number: 7013348948
- Part serial: 950330337
- Condition: Failed
- Location: Zone 200
- Part time: 29,236 hours, 26,430 cycles
- Stage of operation: DE
- How discovered: O
- Nature of condition: B
- Precautionary procedure: B
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HNAA2025073100474

## Discrepancy

AT 33000 FEET UNTIL 20000 ELECTRICAL BURNING FUMES CAUSING LIGHT HEADEDNESS IN FLIGHT DECK.   INSPECTED AND FOUND NR 200 DAU INOPERATIVE. R & R NR 200 DAU IAW AMM 31-41-01-000-801-A AND 31-41-01-400-801-A. OPS CHECK GOOD. NO SMELLS NOTED AT THIS TIME. OK FOR SERVICE.

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