# SDR UPS405373

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 31, 1996
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N691UP](https://openairdocs.org/aircraft/N691UP), registered now
- Make and model: Boeing 747121
- Aircraft serial: 19641
- System (JASC): [5330 · Fuselage Main, Plate/Skin](https://openairdocs.org/jasc/5330)
- Part: Skin
- Condition: Corroded
- Location: Bs 1720
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UPS405373

## Discrepancy

WHILE IN FOR C-CHECK IN AMS, MAINTENANCE REPORTED, CORROSION AT B.S. 1720 LT STR 34 AT LAP SPLICE.  OUT OF LIMITS I.A.W. 53-30-01, REPAIRED PER SRM 53-30-03, FIG. 17.

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