# SDR AALA202609023591

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 25, 2026
- Submitted: September 2, 2026
- Operation: Air carrier
- Aircraft: [N958NN](https://openairdocs.org/aircraft/N958NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 31203
- Aircraft time: 35,278 hours, 14,809 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Floor Support
- Part number: 143A5410174
- Condition: Cracked
- Location: Zone 200
- 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/AALA202609023591

## Discrepancy

AIRCRAFT IN BASE MAINTENANCE: TOP FLANGE OF INTERCOSTAL AT FS 394 LBL 14 IS CRACKED AROUND FLOORBOARD HOLE.  REMOVED AND REPLACED TOP FLANGE OF INTERCOSTAL PN 143A5410-174 IAW AARD 51-00-05-1 AND BOEING DWG 143A5400.

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