# SDR CALA2026072718046

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 23, 2026
- Submitted: July 27, 2026
- Operation: Air carrier
- Aircraft: [N37555](https://openairdocs.org/aircraft/N37555), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 67182
- Aircraft time: 11,418 hours, 3,848 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Unknown
- Condition: Odor
- Location: Cabin
- Stage of operation: NR
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026072718046

## Discrepancy

STRONG BURNED RUBBER ODOR FROM UNKNOWN SOURCE.   PILOT REPORTED THE ODOR WAS NOT PRESENT UNTIL THE CREW OPENED L1 DOOR.  PERFORMED SMOKE OR FUMES IN CABIN INSPECTION IAW FIM 21-00 TASK 930, NO DEFECTS NOTED. ALSO INSPECTED TIRES AND BRAKES IAW AMM 05-51-07-210-801, NO DEFECTS NOTED.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.