# SDR AALA2020080769020

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 29, 2020
- Submitted: August 7, 2020
- Operation: Air carrier
- Aircraft: [N957NN](https://openairdocs.org/aircraft/N957NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 31202
- Aircraft time: 18,439 hours, 7,137 cycles
- System (JASC): [5315 · Fuselage Main, Floor Beam](https://openairdocs.org/jasc/5315)
- Part: Floorbeam
- Part number: 143A524036
- Condition: Cracked
- Location: Bs 540
- 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/AALA2020080769020

## Discrepancy

AIRCRAFT IN BASE MAINTENANCE: CRACKED FLOOR SUPPORT AT BS 540 BETWEEN BL0 AND LBL 24.75, MEASURING L=2.0 IN, W=0.005 IN. REPLACED FLOOR SUPPORT WITH NEW IAW AARD 51-00-05-1 AND SRM 51-40-02.

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