# SDR SWAA2020032634129

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 21, 2020
- Submitted: March 26, 2020
- Operation: Air carrier
- Aircraft: [N282WN](https://openairdocs.org/aircraft/N282WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 32534
- Aircraft time: 44,047 hours, 26,108 cycles
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Outflow Valve
- Part number: 2123002AC
- Part serial: 0491580
- Condition: Faulty
- Location: Cabin Pressure
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2020032634129

## Discrepancy

AT CRUISE FLIGHT LEVEL 400 WE HAD A CABIN ALTITUDE LIGHT AS WELL AS A CABIN ALTITUDE WARNING HORN. WE STARTED AN EMERGENCY DESCENT AND COMPLIED WITH THE CABIN ALTITUDE WARNING EMERGENCY DESCENT CHECKLIST PER THE QRH. / DUE TO RESCENT PRESSURIZATION ISSUES PERFORMED JO#7772; JO#7773; JO#7774; JO#7775; JO#7776; JO#7777 AND JO# 7778

---
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.