# SDR CALA2026060816857

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 5, 2026
- Submitted: June 8, 2026
- Operation: Air carrier
- Aircraft: [N13227](https://openairdocs.org/aircraft/N13227), registered now
- Make and model: Boeing 737824
- Aircraft serial: 28788
- Aircraft time: 80,586 hours, 30,631 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Filter
- Part number: 21FA407G
- Condition: Clogged
- Location: Zone 100
- 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/CALA2026060816857

## Discrepancy

ELECTRICAL SMELL IN CABN COMPLD W/QRH. ODOR DISIPATED WHEN FAN S AND R PACK OFF R/R LEFT AND RIGHR RECIRCULATION AIR FILTERS. REF AMM 21-25-01. INSPECTED LEFT AND RIGHT PACK BAY. INSPECTED AIR MIX BAY AND FWD CARGO PIT. NO FAULTS NOTED. NO SMELL NOTED IN THE CABIN AFTER BOTH ENGINE RUNS AND BOTH PACK OPERATED. AC OK FOR SVC. REF AMM 05-51-26.

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