# SDR 9WGA2026052225805

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 19, 2026
- Submitted: May 22, 2026
- Operation: Air carrier
- Aircraft: [N258SN](https://openairdocs.org/aircraft/N258SN), registered now
- Make and model: Boeing 747-47UF
- Registry model: [Boeing 747-47UF](https://openairdocs.org/model/boeing-747-47uf) (OpenAirDocs)
- Aircraft serial: 29258
- Aircraft time: 94,698 hours, 15,226 cycles
- System (JASC): [5322 · Fuselage Internal Mounting Structure](https://openairdocs.org/jasc/5322)
- Part: Shear Tie
- Part number: 69B14644U3
- Condition: Cracked
- Location: Zone 100
- 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/9WGA2026052225805

## Discrepancy

DURING HEAVY CHECK,  CRACK FOUND ON THE CENTER TANK STA 1000 FRONT SPAR SHEAR TIE LBL 11.33, (NR 041072, SEQ 872).  REMOVED AND REPLACED SHEAR TIE AT CENTER TANK STA. 1000 FRONT SPAR LBL 11.33, IAW B747-400 SRM 51-40-02 AND REQUIREMENTS SERVICE BULLETIN 747-53A2904, DATED 06, 2020, THIS CORRECTIVE ACTION CLOSES SDR.

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