# SDR SIMA20130223001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 23, 2013
- Submitted: February 25, 2013
- Operation: Air carrier
- Aircraft: [N685AE](https://openairdocs.org/aircraft/N685AE), registered now
- Make and model: Emb EMB-145LR
- Registry model: [EMB EMB-145LR](https://openairdocs.org/model/embraer-emb-145lr) (OpenAirDocs)
- Aircraft serial: 14500836
- Aircraft time: 22,538 hours, 19,154 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Acm
- Part number: 22051201
- Condition: Malfunctioned
- Location: Ac Bay
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: B
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SIMA20130223001

## Discrepancy

ON FLIGHT 4126 THE CREW REPORTED LAV SMOKE ON EICAS, RAN CHECKLIST, LIGHT ON AFTER FLIGHT ATTENDANT TEST.  LIGHT OUT ABOUT 2 MIN LATE ON BASE FOR RETURN LANDING.  THE CREW DECLARED AN EMERGENCY AND ELECTED TO RETURN TO ORD.  THE AIRCRAFT LANDED WITHOUT INCIDENT.  THE AIRCRAFT WAS REMOVED FROM SERVICE.  REMOVED AND REPLACED THE AIR CYCLE MACHINE AND HEAT EXCHANGER REF NRWC 685-ORD-01248.  THE AIRCRAFT WAS RETURNED TO SERVICE.

---
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.