# SDR CALA2025032003043

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 18, 2025
- Submitted: March 20, 2025
- Operation: Air carrier
- Aircraft: [N57870](https://openairdocs.org/aircraft/N57870), registered now
- Make and model: Boeing 757-33N
- Registry model: [Boeing 757-33N](https://openairdocs.org/model/boeing-757-33n) (OpenAirDocs)
- Aircraft serial: 33525
- Aircraft time: 58,616 hours, 17,154 cycles
- System (JASC): [2822 · Fuel Boost Pump](https://openairdocs.org/jasc/2822)
- Part: Pressure Switch
- Part number: 7G1105
- Condition: Faulted
- Location: Zone 100
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2025032003043

## Discrepancy

CENTER RIGHT PUMP PRESS LIGHT ILLUMINATED AT  FL230 AND SAME EIC AS MESSAGE PERFORMED FIM 28-22 TASK 804. BITE UFI FAULT CODE "A" FLASHING (UNDER FREQUENTCY). RESET UFI NO HELP. REPLACED FUEL BOOST PUMP PRESSURE SWITCH REF AMM 28-42-01. UFI SHOWS ALL 3 LIGHTS FLASHING, RESET NO HELP. FOUND R OVRD FUEL BOOST PUMP CONT RELAY ADD EMP:U220508 POPPED. RESET RELAY. PUMP AND PRESSURE RUNS NORMAL. OPS CHECK OK.  PARTS USED:  19-2842-3-0002,QTY :1  40-0608-3-0135,QTY :1

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