# SDR UIEA2026072200636

- 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): [5310 · Fuselage Main, Structure](https://openairdocs.org/jasc/5310)
- Part: Beam
- Condition: Damaged
- 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/UIEA2026072200636

## Discrepancy

WHILE ACCOMPLISHING SB747-53A2562 R3, FOUND EXISTING PANEL HOLE TOO CLOSE TO NEW BEAM (05EA) AT STA 340.  FASTENER INTERFERENCE CONDITIONS WITH HORIZONTAL STIFFENERS ON LHS NOSE WHEEL WELL AT STA 340, WL 130 - WL 170 RECTIFIED WITH THE HORIZONTAL STIFFENER FLANGES LOCALLY TRIMMED TO ALLOW FASTENER INSTALLATION AS PER EN #3479-26 REV. 0. REPAIR CLASSIFIED AS "MAJOR REPAIR" AND CATEGORIZED AS "CATEGORY B" PERMANENT REPAIR WITH INSPECTION THRESHOLD OF 35,000 TOTAL FLIGHT CYCLES. INSPECTION INTERVAL NOT REQUIRED (THRESHOLD IS AT LOV) AND INSPECTION METHOD NOT REQUIRED (THRESHOLD IS AT LOV) AS PER EN 3479-26 REV.0. NO FURTHER DEFECTS NOTED.

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