# SDR UIEA200700114

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 2, 2007
- Submitted: March 14, 2007
- Operation: Air carrier
- Aircraft: N524MC
- Make and model: Boeing 747-2D7B
- Registry model: [Boeing 747-2D7B](https://openairdocs.org/model/boeing-747-2d7b) (OpenAirDocs)
- Aircraft serial: 21784
- Aircraft time: 93,958 hours, 19,481 cycles
- System (JASC): [5313 · Fuselage Main, Longeron/Stringer](https://openairdocs.org/jasc/5313)
- Part: Longeron Splice
- Condition: Cracked
- Location: Bs 2598 L11r
- 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/UIEA200700114

## Discrepancy

BS 2598 OUTER CHORD STR 11R FWD AND AFT LOWER LONGERON SPLICE FITTING FOUND BOLT HOLE CORROSION CRACK.  FORWARD AND AFT SPLICE FITTING REPLACED PER SRM 51-10-01 PAGE 9 AND SB 74753A2410.

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