# SDR DALA1155856310

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 17, 2011
- Submitted: September 28, 2011
- Operation: Air carrier
- Aircraft: N670US
- Make and model: Boeing 747451
- Aircraft serial: 24225
- Aircraft time: 92,135 hours, 11,261 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Sill
- Condition: Cracked
- Location: Fuselage
- 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/DALA1155856310

## Discrepancy

LT NR 1 DOOR UPPER SILL WEB CRACK BS 460. S-16L. L=0.8" PER B747-400 SRM 53-10-15. REPAIR 1.  REPAIRED THE CRACK.

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