# SDR UIEA2026092800919

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 9, 2026
- Submitted: October 10, 2026
- Operation: Air carrier
- Aircraft: [N419MC](https://openairdocs.org/aircraft/N419MC), registered now
- Make and model: Boeing 747-48EF
- Registry model: [Boeing 747-48EF](https://openairdocs.org/model/boeing-747-48ef) (OpenAirDocs)
- Aircraft serial: 28367
- Aircraft time: 121,274 hours, 20,941 cycles
- System (JASC): [5411 · Nacelle/Pylon, Frame/Spar/Rib](https://openairdocs.org/jasc/5411)
- Part: Spar
- Condition: Damaged
- Location: Zone 400
- 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/UIEA2026092800919

## Discrepancy

NR 3 PYLON UPPER SPAR WEB SKIN SUSPECT CRACK AT NAC STA 300.  CRACKED NR 3 PYLON UPPER SPAR WEB SKIN R & R IAW SRM 51-40-02-0G-0 REV. 107, DWG. 311U2130. SHT. 6, REV. B; REPAIR CARRIED OUT IAW EN 3684-26, REV. 0. REPAIR CLASSIFIED AS "MAJOR" CATEGORIZED AS "CATEGORY B" PERMANENT REPAIR WITH INSPECTION REQUIREMENTS & LIMITATIONS: FIRST STAGE APPROVAL,  PARTIAL ASSESSMENT TO 14 CFR 26.43 (D) & 14 CFR 25.571 HAS BEEN ACCOMPLISHED,

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