# SDR DALA2021032901841

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 24, 2021
- Submitted: March 29, 2021
- Operation: Air carrier
- Aircraft: [N587NW](https://openairdocs.org/aircraft/N587NW), registered now
- Make and model: Boeing 757351
- Aircraft serial: 32986
- Aircraft time: 62,752 hours, 20,213 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Doubler
- Condition: Corroded
- Location: Bs 1681
- 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/DALA2021032901841

## Discrepancy

SHIP 5807 INITIAL INSPECTION:CORROSION ON DOUBLER LBL=2.5 TO RBL=2.5 AND FS= 1681 AT W-4. CORRECTIVE ACTION: SUMMARY OF NRC 00670 : CORROSION LEVEL 2 ON DOUBLER LBL=2.5 TO RBL=2.5 AND FS= 1681 AT W-4 WAS REPLACED PER B757-300 SRM. (1763243)

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