# SDR HDNA2024040001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 14, 2024
- Submitted: April 18, 2024
- Operation: Air carrier
- Aircraft: [N198LS](https://openairdocs.org/aircraft/N198LS), registered now
- Make and model: Bolkms BK117C1
- Aircraft serial: 7537
- Aircraft time: 6,382 hours, 20,267 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Blower
- Part number: 730732
- Condition: Binding
- Location: Evaporator
- Part time: 6,382 hours
- Stage of operation: CL
- How discovered: O
- Nature of condition: E, B
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HDNA2024040001

## Discrepancy

PILOT AND MEDICAL STAFF REPORTED A LOUD SOUND AND SUBSEQUENTLY SMELLED SMOKE. PILOT NOTED THAT THE AIRCONDITIONING SYSTEM WAS NO LONGER BLOWING AND THE C/B WAS TRIPPED. HE OPTED TO RETURN TO BASE WHERE MAINTENANCE NOTED THE AFT AIRCONDITIONER BLOWER HAD FAILED.

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