# SDR UIEA2010062400073

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 24, 2010
- Submitted: July 6, 2010
- Operation: Air carrier
- Aircraft: N523MC
- Make and model: Boeing 747-2D7B
- Registry model: [Boeing 747-2D7B](https://openairdocs.org/model/boeing-747-2d7b) (OpenAirDocs)
- Aircraft serial: 21782
- Aircraft time: 100,703 hours, 20,573 cycles
- System (JASC): [5313 · Fuselage Main, Longeron/Stringer](https://openairdocs.org/jasc/5313)
- Part: Stringer
- Condition: Cracked
- Location: Bs 420 S35l
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2010062400073

## Discrepancy

NRC 1115 "LOWER DECK" CRACK ON STR 35L UPPER FLANGE AT STA 420 (DAMAGED AREA TRIMMED OUT, REINFORCED AREA WITH NEW SEGMENT AND REPAIR STRINGER PN N523MC, NRC 1115 1/2 IAW SRM 53-10-03 FIG 3 FASTENER INSTL IAW SRM 51-30-02)

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