# SDR NWAA073376301

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 25, 2007
- Submitted: October 10, 2007
- Operation: Air carrier
- Aircraft: [N661US](https://openairdocs.org/aircraft/N661US), registered now
- Make and model: Boeing 747451
- Aircraft serial: 23719
- Aircraft time: 76,942 hours, 10,317 cycles
- System (JASC): [5311 · Fuselage Main, Frame](https://openairdocs.org/jasc/5311)
- Part: Frame
- Condition: Cracked
- Location: Bs 340
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/NWAA073376301

## Discrepancy

DURING "M" CHECK, FOUND CRACK COMMON TO THE BL 0 CROWN INTERCOSTAL AT BS 340.  REPAIRED PER EA 63-210143 SECTION I, SECTION II OF EA 63-210143 TO BE ACCOMPLISHED 12 MONTHS FROM SEPT 24, 2007.

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