# SDR 3EJA2025020613025

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 30, 2025
- Submitted: February 6, 2025
- Operation: Air carrier
- Aircraft: N928JS
- Make and model: Cessna 750
- Registry model: [Cessna 750](https://openairdocs.org/model/cessna-750) (OpenAirDocs)
- Aircraft serial: 7500136
- Aircraft time: 7,435 hours, 4,201 cycles
- System (JASC): [3620 · Pneumatic Indicating System](https://openairdocs.org/jasc/3620)
- Part: Switch
- Part number: 1103P0912
- Part serial: 2261
- Condition: Failed
- Location: Zone 100
- Part time: 761 hours, 400 cycles
- Stage of operation: TO
- How discovered: O
- Nature of condition: J
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/3EJA2025020613025

## Discrepancy

EICAS POPULATED AN AMBER CODE OF “HP DUCT O’PRESS R”.  T/S SYSTEM. R/R OVERPRESSURE SWITCH RH SIDE DUCT. OPS CK GOOD

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