# SDR AALA202609156666

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 14, 2026
- Submitted: September 16, 2026
- Operation: Air carrier
- Aircraft: [N761AJ](https://openairdocs.org/aircraft/N761AJ), registered now
- Make and model: Boeing 777223
- Aircraft serial: 31478
- Aircraft time: 91,217 hours, 11,576 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Air Filter
- Part number: P512777
- Condition: Dirty
- Stage of operation: CR
- 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/AALA202609156666

## Discrepancy

AIRCRAFT WAS GROUNDED:   BURNT RUBBER ODOR THROUGHOUT A/C.  DISSIPATED WITH RECIRCULATION FANS OFF IN 10 MIN.  ACCOMPLISHED J/C 72L00021001.  REPLACED ALL RECIRCULATION FAN FILTERS AS PRECAUTIONARY IAW AMM 21-25-02 AND AMM 21-25-08.  CHECKED RECIRCULATION FAN LOWER, NO EVIDENCE OF ELECTRICAL FAULT, NO BINDING, NO RUBBING OF BLADES. UPPER FANS CHECKED, NO EVIDENCE OF FAULTS, NO BINDING, NO RUBBING.   CHECKED LAVATORY FAN, NO EVIDENCE OF FAULTS.  ENGINES RUN UP PER J/C 72L00021001 POINT D, NO SMOKE OR ODORS COMING FROM ENGINES OR APU.  CONTACTED MOC FOR HISTORY REVIEW AND AUTHORIZATION TO CLOSE THE ITEM.

---
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.