# SDR P5CA2018120500367

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 4, 2018
- Submitted: December 5, 2018
- Operation: Air carrier
- Aircraft: N647GT
- Make and model: Boeing 767306
- Aircraft serial: 27611
- Aircraft time: 79,930 hours, 20,580 cycles
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Outflow Valve
- Condition: Malfunctioned
- Location: Cabin Pressure
- Stage of operation: TX
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/P5CA2018120500367

## Discrepancy

AIRCRAFT CABIN PRESSURIZES AT REATES OF 2000+ FEET PER MINUTE ON THE GROUND WHEN APU BLEED SWITCH IS SELECTED - OUTFLOW VALVE SHOULD BE FULL OPEN AT ALL TIMES WITH WEIGHT ON WHEELS. HURTS EARS(<P>PERFORMED FIM TASK 21-31 FT 803 AND OPS CHECK CABIN PRESS SYST. IAW B767 AMM 21-31-00 NO DEFECTS NOTED AT THIS TIME. ACFT OK FOR SERVICE.</P>)

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