# SDR HNAA2025090100583

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 30, 2025
- Submitted: September 1, 2025
- Operation: Air carrier
- Aircraft: [N689EC](https://openairdocs.org/aircraft/N689EC), registered now
- Make and model: Emb EMB-145LR
- Registry model: [EMB EMB-145LR](https://openairdocs.org/model/embraer-emb-145lr) (OpenAirDocs)
- Aircraft serial: 14500853
- Aircraft time: 44,124 hours, 39,916 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Acm
- Part number: 8152403
- Part serial: 200310167
- Condition: Smoke
- Location: Zone 100
- Part time: 47,548 hours, 33,437 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: B
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HNAA2025090100583

## Discrepancy

SMOKE IN CABIN DURING CRUISE AT FL250.  INSPECTED PACK SYSTEM, FOUND #200 ACM SIEZED W/ MELTED DUCTS ON #200 DUAL TEMP CONTROL VALVE. R/R'D DUCTS ON #200 DUAL TEMP CONTROL VALVE IRW AMM 21-60-01. R/R'D #200 ACM IRT AMM 21-61-03. OPS AND LEAK CHECK GOOD WITH NO VISIBLE SMOKE IN CABIN.

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