# SDR UIEA2026081200745

- 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): [5300 · Fuselage Structure (General)](https://openairdocs.org/jasc/5300)
- Part: Structure
- Condition: Abnormal
- 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/UIEA2026081200745

## Discrepancy

WHILE ACCOMPLISHING SB747-53A2562 R3, AT STA 260 WL 20 RH, FOUND EXISTING HOLE SIZE 04 EA DEVIATED FROM DRAWING 141U1192. EXISTING HOLE SIZE = 3/16, DWG HOLE = 1/4; FOUND SHORT EDGE MARGIN- FITTING COMMON TO SEAT TRACK AND CHORD P/N: 65B11784U508.(<P >R/H ANGLE AND UPPER CHORD AT STA 260 WL 20 (04 EA) FASTENER HOLES SHORT EDGE MARGIN FOUND ACCEPTABLE AS PER EN 3581-26 REV. 0. REPAIR CLASSIFIED AS "MAJOR" REPAIR WITH FIRST AND SECOND STAGE APPROVAL. NO ADDITIONAL STRUCTURAL WORK REQUIRED. INSPECTION THRESHOLD OF 23,941 TOTAL FLIGHT CYCLES. TO BE COMPLIED WITH SUBSEQUENT TO FAA APPROVAL REQUIREMENTS BEFORE REACHING THE INSPECTION THRESHOLD. NO FURTHER DEFECTS NOTED.</P>)

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