# SDR DALA2015051403322

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 13, 2015
- Submitted: May 18, 2015
- Operation: Air carrier
- Aircraft: [N711ZX](https://openairdocs.org/aircraft/N711ZX), registered now
- Make and model: Boeing 757231
- Aircraft serial: 28481
- Aircraft time: 64,999 hours, 18,671 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Stiffener
- Part number: 146N872259
- Condition: Corroded
- Location: Bs 1661
- 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/DALA2015051403322

## Discrepancy

LOWER FRAME AT L4 DOOR CUT OUT, BS 1661 HAS A CORRODED STIFFENER. R & R THE STIFFNER IAW SRM 51-40-02, PAR 7 & DWG  146N8722.

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