# SDR UIEA200300039

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 24, 2003
- Submitted: August 6, 2003
- Operation: Air carrier
- Aircraft: [N506MC](https://openairdocs.org/aircraft/N506MC), registered now
- Make and model: Boeing 747-2D3B
- Registry model: [Boeing 747-2D3B](https://openairdocs.org/model/boeing-747-2d3b) (OpenAirDocs)
- Aircraft serial: 21252
- System (JASC): [2810 · Fuel Storage](https://openairdocs.org/jasc/2810)
- Part: Skin
- Condition: Corroded
- Location: Center Tank
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA200300039

## Discrepancy

DURING C-CHECK, CENTER TANK UPPER SKIN FOUND CORRODED AT BS 1060, RBL 106-122 UNDER FLOORBEAM LOWER CHORD.  PERMANENT REPAIR PER REF, CORROSION WAS REMOVED BY BLENDING.  BLENDED AREA WAS SHOP PEENED, REFINISHED AND BMS 5-95 SEALANT WAS USED TO FILL THE BLENDED AREA TO PREVENT MOISTURE ACCUMULATION.  NO REINFORCEMENT WAS REQUIRED. (M)

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