# SDR DALA1106496308

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 27, 2011
- Submitted: January 27, 2011
- Operation: Air carrier
- Aircraft: N668US
- Make and model: Boeing 747451
- Aircraft serial: 24223
- Aircraft time: 88,742 hours, 10,970 cycles
- System (JASC): [5312 · Fuselage Main, Bulkhead](https://openairdocs.org/jasc/5312)
- Part: Bulkhead
- Condition: Cracked
- Location: Bs 2598
- 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/DALA1106496308

## Discrepancy

DURING PERFORM OPEN HOLE HFEC INSP CRACK WAS FOUND IN 1 OF THE HOLES ON BS 2598 BULKHEAD.  REPAIRED IAW SRM 53-80-08, REPAIR 11.  ER/A488618-14, REV 2, PERFORM REPAIR IAW SRM 53-80-08, REPAIR 11. OPEN HOLE AND SURFACE EDDY CURRENT INSP THREHOLD: 6000 CYCLES AFTER REPAIR INSTALLATION.  INSP INTERNAL 1500 CYCLES.

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