# SDR SIMA20120331001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 31, 2012
- Submitted: April 2, 2012
- Operation: Air carrier
- Aircraft: [N669MB](https://openairdocs.org/aircraft/N669MB), registered now
- Make and model: Emb EMB-145LR
- Registry model: [EMB EMB-145LR](https://openairdocs.org/model/embraer-emb-145lr) (OpenAirDocs)
- Aircraft serial: 145788
- Aircraft time: 21,090 hours, 18,174 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Cover
- Part number: 12039715001
- Condition: Missing
- Location: Cabin Pressure
- Stage of operation: CL
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SIMA20120331001

## Discrepancy

FOR FLIGHT 3355 MAINTENANCE REPORTED THE AC WAS RETURNING WITH A PRESSURIZATION PROBLEM PIREP-CLIMBING THROUGH 10,000 FT CABIN ALT TURNED RED AND THE CREW DESCENDED BELOW 10,000.  THE CREW DECLARED AN EMERGENCY AND RETURNED TO DFW.  THE AIRCRAFT LANDED WITHOUT INCIDENT.  THE AIRCRAFT WAS REMOVED FROM SERVICE.  FOUND GROUND AIR CONNECTION COVER MISSING, RETRIEVED OLD COVER AND REPLACED WITH NEW IAW EMB MM 21-22-04 LESS STEP I1.  THE OPERATIONAL CHECK WAS GOOD.  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.