# SDR SWAA2024052086986

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 14, 2024
- Submitted: May 20, 2024
- Operation: Air carrier
- Aircraft: [N8713M](https://openairdocs.org/aircraft/N8713M), registered now
- Make and model: Boeing 737-8
- Registry model: [Boeing 737-8](https://openairdocs.org/model/boeing-737-8) (OpenAirDocs)
- Aircraft serial: 36984
- Aircraft time: 14,926 hours, 6,911 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Cabin Pressure
- Part number: UNKNOWN
- Condition: Abnormal
- Stage of operation: CR
- 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/SWAA2024052086986

## Discrepancy

CABIN PRESSURIZATION CYCLING +/- 500 FPM ON CABIN CLIMB GAUGE. INFO: STEADY AT CRUISE; FL 350 3 + 30 INTO FLIGHT SWITCHED TO ALTN CTRL ON CABIN PRESS PANEL.<[01] PERFORMED CABIN PRESSCONTROL BITE #1 + #2 IAWMM 21-31-00; NO FAULTS. PERFORMED PACK #1;#2 SYSTEM TEST IAWMM 21-00-00; NO FAULTS. OK TO CONT PER MEL 21-51-01B SP#1;3;4;[02] PERFORMED CABIN PRESS CONTROL BITE #1 + #2 IAW MM 21-31-00; NO FAULTS. PERFORMED PACK #1;#2 SYSTEM TEST IAW MM 21-00-00; NO FAULTS. OK TO CONT PER MEL 21-51-05B SP#1;3;4

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