# SDR Y2PA2023011602301

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 10, 2023
- Submitted: January 16, 2023
- Operation: Air carrier
- Aircraft: [N837US](https://openairdocs.org/aircraft/N837US), registered now
- Make and model: Doug MD-88
- Registry model: [Doug MD-88](https://openairdocs.org/model/mcdonnell-douglas-md-88) (OpenAirDocs)
- Aircraft serial: 53257
- Aircraft time: 75,266 hours, 55,993 cycles
- System (JASC): [5321 · Fuselage Floor Panel](https://openairdocs.org/jasc/5321)
- Part: Floor Skin
- Condition: Corroded
- Location: Zone 100
- Part time: 75,266 hours, 55,993 cycles
- 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/Y2PA2023011602301

## Discrepancy

WHILE AT C-CHECK, CORROSION WAS FOUND ON CUSP WEB AT APPROXIMATELY BS 209 BETWEEN LBL 44 AND LBL 54. N REMOVED THE CORROSION AND FOUND AREA TO BE OUT OF LIMITS. THE DAMAGED AREA WAS REMOVED AND AN HFEC INSPECTION WAS PERFORMED OF THE TRIMMED-OUT AREA AND THE EXISTING FASTENER HOLES COMMON TO THE REPAIR. NO DEFECTS NOTED. THEY FABRICATED A REPAIR FILLER FROM 7075-T6 0.020 AND A REPAIR DOUBLER FROM 7075-T6 0.025. REPAIR PARTS WERE DRILLED, DEBURRED, TREATED AND PRIMED IAW SRM 51-10-3. REPAIR PARTS WERE INSTALLED ON REPAIR AREA BETWEEN BS 200 AND 215 BETWEEN LBL 44 AND LBL 54 IAW AEI EO 18734. EO 18734 .

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