# SDR Y2PA2023011602302

- 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): [5313 · Fuselage Main, Longeron/Stringer](https://openairdocs.org/jasc/5313)
- Part: Longeron
- Condition: Corroded
- Location: Bs 1003-1050
- 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/Y2PA2023011602302

## Discrepancy

WHILE AT C-CHECK, THE AFT CARGO BILGE AREA BETWEEN BS 1003-1050 AT LONGERON 30 WAS FOUND TO BE CORRODED.  REMOVED CORROSION AND FOUND THE AREA TO BE OUT OF LIMITS. THEY TRIMMED OUT THE DAMAGED AREA AND PERFORMED A HFEC SURFACE TRIM PROBE INSPECTION OF ALL THE TRIMMED AREA AND ACCOMPLISHED A HFEC OPEN HOLE INSPECTION OF ALL THE OPEN FASTENER HOLES COMMON TO THE REPAIR. NO CRACK INDICATIONS NOTED.  FABRICATED A REPAIR SECTION FOR LONGERON,  A SPLICE ANGLE, 2 SPLICE STRAPS AND A FILLER.  REPAIR PARTS WERE DRILLED, DEBURRED, TREATED AND PRIMED IAW SRM 51-10-03. ALL REPAIR PARTS WERE INSTALLED WET AND CORROSION INHIBITING COMPOUND WAS APPLIED TO THE REPAIR AREA IAW AEI EO 18918. EO 18918.

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