# SDR DALA2019010200007

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 1, 2019
- Submitted: January 2, 2019
- Operation: Air carrier
- Aircraft: N951DN
- Make and model: Doug MD-90-30
- Registry model: [Doug MD-90-30](https://openairdocs.org/model/mcdonnell-douglas-md-90-30) (OpenAirDocs)
- Aircraft serial: 53361
- Aircraft time: 44,846 hours, 36,274 cycles
- System (JASC): [5714 · Wing, Center Box](https://openairdocs.org/jasc/5714)
- Part: Skin
- Condition: Corroded
- Location: Center Wingbox
- 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/DALA2019010200007

## Discrepancy

WHILE ON THE LINE IN ATL MTC WAS SEARCHING FOR THE SOURCE OF A FUEL SMELL IN THE AIRCRAFT CABIN AND FOUND CORROSION WHICH HAD CREATED A HOLE IN THE LT SIDE OF THE CENTER WING BOX AFT UPPER SKIN BETWEEN STA 87 AND STA994. THE MAIN AREA OF CORROSION AS A RESULT OF THE LAV LINE LEAK IS BEING REPAIRED PER ERA 574104-14. THE MAIN AREA OF CORROSION CREATED A PUDDLE WHICH MIGRATED AFT TOWARDS THE SLANT ANGLE 955831-501. THIS ERA PROVIDES REPAIR INSTRUCTIONS FOR REPAIR OF THE AFT SLANT ANGLE AND THE AFT CENTER WING UPPER SKIN 5930502-149. (LP# 0886482)

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