# SDR IPXA2026052087031

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 14, 2026
- Submitted: May 20, 2026
- Operation: Air carrier
- Aircraft: [N438UP](https://openairdocs.org/aircraft/N438UP), registered now
- Make and model: Boeing 757-24APF
- Registry model: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (OpenAirDocs)
- Aircraft serial: 25469
- Aircraft time: 31,807 hours, 20,820 cycles
- System (JASC): [2810 · Fuel Storage](https://openairdocs.org/jasc/2810)
- Part: Fuel Sys
- Part number: 125334D2
- Part serial: P37021
- Condition: Inoperative
- Location: Zone 100
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/IPXA2026052087031

## Discrepancy

FUEL MIGRATION FL 350. TOP OF DESCENT 0.0. START DESCENT 300. IN DESCENT 600. ON LANDING 1600. AT PARKING 1400. NOTE! LEFT TANK TO CENTER.  REMOVED AND REPLACED BOTH CENTER TANK REFUELING VALVES (VALVE, ASSY, FUEL CONTROL), 2 EACH DRAIN CHECK VALVES (VALVE PRESSURE FUEL DRAIN), AND LEFT DEFUEL VALVE (VALVE FUEL SHUTOFF) IAW AMM 28-21-02, 28-21-05, AND 28-26-01. OPS CHECK DUE LEAK CHECK ACCOMPLISHED ON REFUELING VALVES, NO LEAKS NOTED IAW AMM 28-21-02

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