# SDR UPS05444386

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 11, 2005
- Submitted: April 29, 2005
- Operation: Air carrier
- Aircraft: N523UP
- Make and model: Boeing 747283B
- Aircraft serial: 22381
- Aircraft time: 74,408 hours, 15,331 cycles
- System (JASC): [5330 · Fuselage Main, Plate/Skin](https://openairdocs.org/jasc/5330)
- Part: Skin
- Part number: 65B09637Y1
- Condition: Corroded
- Location: Fuselage
- 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/UPS05444386

## Discrepancy

LOWER FX EXTERNAL SKIN SURFACE RT POTABLE WATER TANK SERVICE CONNECTOR ATT DOUBLER FOUND SURFACE CORROSION AT STA 975 TO STA 980.  CORROSION BLEND OUT 0.040 INCH BY 1 INCH BY 3 INCH EXCEED SRM 53-30-01 FIG 1 LIMITS, DOUBLER REPLACED AS PER SRM 51-10-01 PG 9.

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