# SDR IPXA2026033134415

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 5, 2026
- Submitted: March 31, 2026
- Operation: Air carrier
- Aircraft: [N451UP](https://openairdocs.org/aircraft/N451UP), registered now
- Make and model: Boeing 757-24APF
- Registry model: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (OpenAirDocs)
- Aircraft serial: 27739
- Aircraft time: 41,230 hours, 23,656 cycles
- System (JASC): [5315 · Fuselage Main, Floor Beam](https://openairdocs.org/jasc/5315)
- Part: Floorbeam
- Part number: 146N51581
- 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/IPXA2026033134415

## Discrepancy

MAJOR REPAIR,   MAIN DECK CARGO COMP. FLOOR BEAM LWR CHORD HAS CORROSION, APPROX AT BS 1400, BTW RBL 24.75 AND RBL 45.50, ID STICKER NUM. (085-074). ATA 53-10. REMOVED CORROSION AT MAIN CARGO COMP. FLOOR BEAM LWR CHORD APPROX. AT BS 1400, BTW RBL 24.75 AND RBL45.50 REF. B757-200PF SRM 53-00-51-1A-1 FIG 101 NOTE 'B' DETAIL III.  INSTALLED ALL REPAIR PARTS WITH BMS 5-95 SEALANT IAW EA 757-5360-01-B0695 REV P1 STEP 18. ACCOMPLISHED THE CATEGORY A REPAIR PER EO-96956-REQ1 AND VT-SAA EA 757-5360-01-B0695 REV IR

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