# SDR USAA20090424EM021

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 23, 2009
- Submitted: April 24, 2009
- Operation: Air carrier
- Aircraft: N959UW
- Make and model: Emb ERJ 190-100 IGW
- Registry model: [EMB ERJ 190-100 IGW](https://openairdocs.org/model/embraer-erj-190-100-igw) (OpenAirDocs)
- Aircraft serial: 19000166
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Bolt
- Condition: Missing
- Location: Zone 100
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAA20090424EM021

## Discrepancy

FLIGHT 1171, BWI-CLT - THE FLIGHT REPORTED A PRESSURIZATION PROBLEM AFTER TAKEOFF FROM BWI.  THE CREW ADVISED, HAD A CABIN ALT HIGH LIGHT.  MAINTENANCE PERFORMED A SATISFACTORY CHECK OF THE PRESSURE CONTROL SYSTEM AND THE AIRCRAFT RETURNED TO SERVICE.  AFTER TAKEOFF A SECOND TIME BOTH PACKS WERE LOST MOMENTARILY AND RETURNED TO NORMAL OPERATION.  THE CREW RETURNED TO BWI A SECOND TIME.  MAINTENANCE FOUND BOLT MISSING FROM RIGHT RAM DUCT SUPPORT BRACKET.  ALSO REPLACED THE AIR CONDITION CHECK VALVE AND RECIRCULATION FILTERS.

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