# SDR 2026F00174

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 13, 2026
- Submitted: August 13, 2026
- Operation: General aviation
- Aircraft: [N12155](https://openairdocs.org/aircraft/N12155), registered now
- Make and model: Cessna 208B
- Registry model: [Cessna 208B](https://openairdocs.org/model/cessna-208b) (OpenAirDocs)
- Aircraft serial: 208B0562
- Aircraft time: 15,735 hours, 20,238 cycles
- System (JASC): [3424 · Turn and Bank/Rate of Turn Indicator](https://openairdocs.org/jasc/3424)
- Part: Indicator
- Part number: C661030506
- Part serial: 793333
- Condition: Overheated
- Location: Zone 200
- Stage of operation: CR
- How discovered: O
- Nature of condition: B
- Precautionary procedure: B, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2026F00174

## Discrepancy

AIRCRAFT WAS OPERATING A PART 135 FLIGHT FROM KABI TO KDFW. DURING CRUISE FLIGHT AT APPROX 7,000 FT MSL NEAR THE BOOVE WAYPOINT, THE PILOT DETECTED AN ODOR CONSISTENT WITH SOMETHING BURNING. PILOT CLOSED CABIN VENTS TO DETERMINE WHETHER THE ODOR ORIGINATED WITHIN THE ACFT. APPROX 1 TO TWO MINUTES LATER, THE ODOR BECAME STRONGER, & PILOT OBSERVED A SMALL PUFF OF SMOKE COMING FROM BENEATH INSTRUMENT PANEL & DISCOLORATION IN AREA OF TURN-AND-BANK INDICATORS.   PILOT NOTIFIED ATC, DECLARED AN EMERGENCY, INITIATED AN IMMEDIATE DESCENT, & DIVERTED TO KSEP. ACFT LANDED SAFELY.  MAINT INSPECTED ACFT & DETERMINED THAT COPILOT’S TURN-AND-BANK INDICATOR WAS SOURCE OF SMOKE & OVERHEATING. ACFT WAS REMOVED FROM SERVICE.  OPEN

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