# SDR IPXA2026090912765

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 6, 2026
- Submitted: September 11, 2026
- Operation: Air carrier
- Aircraft: [N463UP](https://openairdocs.org/aircraft/N463UP), registered now
- Make and model: Boeing 757-24APF
- Registry model: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (OpenAirDocs)
- Aircraft serial: 28267
- Aircraft time: 40,335 hours, 21,491 cycles
- System (JASC): [5315 · Fuselage Main, Floor Beam](https://openairdocs.org/jasc/5315)
- Part: Floorbeam
- Part number: 146N51631
- Condition: Corroded
- Location: Zone 200
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/IPXA2026090912765

## Discrepancy

MAIN DECK STA 1500 BTW LBL 45.50 TO 54.9 FLOORBEAM HAS CORROSION AROUND SCREW HOLE. VERIFIED STEP 9 REF GMM RII 04-02.  EVALUATED REWORKED AREA ON MAIN DECK STA 1500 BTW LBL 45.50 TO 54.9 FLOORBEAM UPPER FLANGE, DIMENSIONS L:1.700" W:1.300" X:0.011", ORIG. MAT. THK .220", MAX. MATERIAL LOSS ALLOWED IS 10% GAGE MAXIMUM, FOUND TO BE WITHIN LIMITS IAW SRM 53-00-51-1A-1 FIG.101 AND SRM 53-60-51-0I-1 FIG. 1.

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