# SDR DALA2017102307696

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 20, 2017
- Submitted: October 23, 2017
- Operation: Air carrier
- Aircraft: [N722TW](https://openairdocs.org/aircraft/N722TW), registered now
- Make and model: Boeing 757231
- Aircraft serial: 29385
- Aircraft time: 64,869 hours, 17,048 cycles
- System (JASC): [5315 · Fuselage Main, Floor Beam](https://openairdocs.org/jasc/5315)
- Part: Floorbeam
- Condition: Corroded
- Location: Bs 365
- 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/DALA2017102307696

## Discrepancy

SURFACE CORROSION FOUND AROUND NUT PLATE HOLES AT THE UPPER AND LOWER SURFACES OF THE CABIN FLOORBEAM, BS 365, BL 0 TO RBL 60.  REMOVED THE CORROSION AND FOUND OUT OF ALLOWABLE LIMITS IAW SRM.  REPAIRED THE FLOORBEAM IAW ERA 481634-14MA, REV A.

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