# SDR SAJF20110805001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 5, 2011
- Submitted: August 9, 2011
- Operation: Air carrier
- Aircraft: [N18211](https://openairdocs.org/aircraft/N18211), registered now
- Make and model: Boeing 747409
- Aircraft serial: 33735
- Aircraft time: 34,388 hours, 4,819 cycles
- System (JASC): [5313 · Fuselage Main, Longeron/Stringer](https://openairdocs.org/jasc/5313)
- Part: Stringer
- Condition: Corroded
- Location: Bs 1780-1940
- 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/SAJF20110805001

## Discrepancy

(B-18211) QC FOUND SEVERAL CORROSION COMMON TO STR 50 L,  BETWEEN STA 1780 AND 1940. THE CORRODED AREAS ARE ALMOST OUT OF SRM ALLOWABLE LIMITATIONS.   PROPOSED TO REPAIR IAW SRM 53-60-03, REPAIR 2.

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