# SDR BIGA20260824001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 24, 2026
- Submitted: August 26, 2026
- Operation: Air carrier
- Aircraft: [N993BH](https://openairdocs.org/aircraft/N993BH), registered now
- Make and model: Dhav DHC8202
- Aircraft serial: 524
- Aircraft time: 37,676 hours, 49,731 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Air Duct
- Part number: H82122131063
- Condition: Detached
- Location: Zone 100
- Part time: 37,676 hours, 49,731 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/BIGA20260824001

## Discrepancy

AIRCRAFT WAS ENROUTE TO RESPOND TO A FIRE MISSION.  WHILE ENROUTE THE SMOKE-JUMPER CREW SAW WHAT APPEARED TO BE SMOKE COMING FROM RIGHT AFT CABIN FLOORBOARDS.  THE AIRCRAFT MADE AN UN-SCHEDULED LANDING AT GPI WITH NO INCIDENT.  ONCE ON THE GROUND THE AIRCRAFT WAS INSPECTED AND FOUND TO HAVE A DISCONNECTED CABIN AIR SUPPLY DUCT AT APPROXIMATELY STA X530.  THE SURROUNDING AREA WAS INSPECTED, AND NO OTHER DAMAGE OR DISCREPANCIES WERE NOTED AT THAT TIME.

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