# SDR CA101129003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 28, 2010
- Submitted: March 15, 2011
- Operation: Air carrier
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft time: 27,267 hours
- Engine: Cfmint CFM565B3P
- System (JASC): [2100 · Air Conditioning System](https://openairdocs.org/jasc/2100)
- Part: Isolation Valve
- Part number: V2T152B
- Condition: Failed
- Location: Cabin Air
- Stage of operation: CL
- 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/CA101129003

## Discrepancy

AFTER GETTING AIRBORNE, THE FLIGHT CREW RECEIVED AN AVIONICS SMOKE MESSAGE ON ECAM.  THE AIRCRAFT DIVERTED BACK TO POINT OF DEPARTURE.  AS A PRECAUTION, LOCAL CFR WAS CALLED OUT BY THE AIRPORT AUTHORITY.  THERE WAS NO ADVERSE PASSENGER REACTION.  REPLACED SKIN EXCHANGER ISOLATION VALVE 24HQ PER AMM 21-26-55-401.  AEVC OPERATIONAL CHECK ACCOMPLISHED PER AMM 21-26-00-710-001.  NO AEVC OR AVIONIC SMOKE FAULTS DISPLAYED ON ECAM.  CONSIDERED SERVICEABLE.

---
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.