# SDR UIEA2011091300495

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 13, 2011
- Submitted: September 13, 2011
- 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: 104,519 hours, 21,333 cycles
- System (JASC): [5311 · Fuselage Main, Frame](https://openairdocs.org/jasc/5311)
- Part: Frame
- Condition: Cracked
- Location: Bs 2231
- Stage of operation: IN
- How discovered: E
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2011091300495

## Discrepancy

BS 2231, S26R, FRAME WEB CRACK APPROX 1" LONG ON FWD INNER CHORD VERT FLANGE.   CRACK AREA TRIMMER OFF AND REPAIRED IAW HX RS R53-62=37218, REV A AND WORK DETAILS REF TO NRC NO 50399.

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