# SDR LR7A2015051200562

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 12, 2015
- Submitted: May 15, 2015
- Operation: Air carrier
- Aircraft: [N401LC](https://openairdocs.org/aircraft/N401LC), registered now
- Make and model: Lkheed 382G
- Aircraft serial: 4606
- Aircraft time: 54,216 hours, 31,521 cycles
- System (JASC): [5312 · Fuselage Main, Bulkhead](https://openairdocs.org/jasc/5312)
- Part: Stiffener
- Part number: LS22423
- Condition: Cracked
- Location: Bulkhead
- 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/LR7A2015051200562

## Discrepancy

DURING SCHEDULED C-12 CHECK UNDER JC HC5321, FOUND THE FS 93 BULKHEAD LOWER STIFFENER HAD CRACKED AT LBL 20 AND RBL 20, WL 150.  REPAIR BY STIFFENER REPLACEMENT ACCOMPLISHED IAW SRM 51-60 AND 51-70.

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