# SDR IPXA2023063066113

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 23, 2023
- Submitted: June 30, 2023
- Operation: Air carrier
- Aircraft: [N426UP](https://openairdocs.org/aircraft/N426UP), registered now
- Make and model: Boeing 757-24APF
- Registry model: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (OpenAirDocs)
- Aircraft serial: 25457
- Aircraft time: 31,338 hours, 21,205 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Indicator
- Part number: SETLOC420M
- Part serial: 569
- Condition: Inoperative
- Location: Unknown
- Stage of operation: CL
- 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/IPXA2023063066113

## Discrepancy

*SUPPLEMENTAL RVSM* CABIN ALTITUDE INDICATOR READS APPROX 1500€™ WHEN IT SHOULD BE APPROX 500€™ **OII 2** ++ PERFORMED OPS CK OF PRESS AND IND. WARNING MODULE REF AMM 21-33-01-404, OPS CK GOOD AT THIS TIME, SUSPECT INTERMITTENT FAIL. OPDERED IND PNL AND DIFF PRESS SENSOR PRECAUTIONARY

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