# SDR J7SA20160726001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 25, 2016
- Submitted: July 28, 2016
- Operation: Air carrier
- Aircraft: [N524FX](https://openairdocs.org/aircraft/N524FX), registered now
- Make and model: Bombdr BD1001A10
- Aircraft serial: 20095
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Safety Valve
- Condition: Malfunctioned
- Location: Cabin Pressure
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: B, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/J7SA20160726001

## Discrepancy

EXPERIENCED RAPID CABIN DEPRESSURIZATION AT FL430 CABIN ALTITUDE INCREASED AT 10,000+ FEET PER MINUTE. EXECUTED EMERGENCY DESCENT TO 15,000 FT IN LESS THAN 4 MINUTES. AFTER LEVELING AT 15,000 FT CABIN PRESSURE SYSTEM APPEARED TO RETURN TO NORMAL OPERATION AND ALTITUDE SCHEDULE.  REPLACED LT AND RT SAFETY VALVES AND SWAPPED IASC NR 1 AND NR 2.  OPS CHECK GOOD FOR IASC SWAP AND FOR THE OUTFLOW VALVE.

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