# SDR CALA2026072217944

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 20, 2026
- Submitted: July 22, 2026
- Operation: Air carrier
- Aircraft: [N14121](https://openairdocs.org/aircraft/N14121), registered now
- Make and model: Boeing 757224
- Aircraft serial: 27563
- Aircraft time: 91,269 hours, 22,044 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Switch
- Condition: Out Of Position
- Location: Zone 200
- Stage of operation: NR
- How discovered: O
- Nature of condition: M, B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026072217944

## Discrepancy

RAN QRH FOR FUME EVENT LEAD TO EQPT OVHT EICAS MSG. CONDITIONAL INSPECTIONS COMPLETE.  PERFORMED SMOKE-ODOR IN THE FLIGHT DECK OR CABIN CONDITIONAL INS PECTION IAW AMM 05-51-58.  NO ODORS WERE NOTICED. FOUND BOTH RECIRCULATING SWITCHES IN OFF, CAUSING EQUIPMENT OVERHEAT MESSAGE. VISUAL INSPECTION AND TESTS ACCOMPLISHED FOR PACKS, RECIRCULATING FANS, OVENS, ETC, NO SMELL OR ODOR NOTICED.

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