# SDR UIEA2020070771426

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 4, 2020
- Submitted: July 7, 2020
- Operation: Air carrier
- Aircraft: [N489MC](https://openairdocs.org/aircraft/N489MC), registered now
- Make and model: Boeing 747412F
- Aircraft serial: 26553
- Aircraft time: 99,899 hours, 17,681 cycles
- System (JASC): [5311 · Fuselage Main, Frame](https://openairdocs.org/jasc/5311)
- Part: Frame
- Condition: Cracked
- Location: Bs 2598 Bulkhead
- 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/UIEA2020070771426

## Discrepancy

BS 2598 BULKHEAD RT INNER CHORD AREA,  ONE CRACK FOUND ON THE FWD SPLICE FITTING, SECOND LAYER COUNT FROM INBD. APPROX 0.040" IN DEPTH RUNNING AFT AT 4 O`CLOCK POSITION, THE BULKHEAD UPPER CORNER RT SPLICE FITTING WAS REPAIRED IAW RI-53-00-14106 REV A.

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