# SDR ASAA2018040524223

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 5, 2018
- Submitted: April 16, 2018
- Operation: Air carrier
- Aircraft: [N559AS](https://openairdocs.org/aircraft/N559AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35178
- Aircraft time: 42,977 hours, 12,800 cycles
- System (JASC): [5315 · Fuselage Main, Floor Beam](https://openairdocs.org/jasc/5315)
- Part: Floorbeam
- Part number: 147A55047
- Condition: Corroded
- Location: Bs 947.5
- 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/ASAA2018040524223

## Discrepancy

MAIN CABIN BS 947.5 UPPER FLOORBEAM CORRODED AT RBL 5.  ACFT GROUNDED.    FOUND TO BE OUT OF LIMITS IAW SRM 53-70-51-1A-1, FIGURE 104, DETAIL C.  ACCOMPLISHED A CATEGORY A REPAIR ON THE UPPER FLOORBEAM TEE LBL 10 - RBL 60 IAW 53-70-51-2R-5, REPAIR 5, ALTERNATIVE 2.

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