# SDR UPS03440395

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 4, 2003
- Submitted: March 31, 2003
- Operation: Air carrier
- Aircraft: N520UP
- Make and model: Boeing 747-200
- Registry model: [Boeing 747-200](https://openairdocs.org/model/boeing-747-200) (OpenAirDocs)
- Aircraft serial: 21943
- Aircraft time: 73,562 hours, 16,470 cycles
- System (JASC): [5312 · Fuselage Main, Bulkhead](https://openairdocs.org/jasc/5312)
- Part: Bulkhead
- Condition: Corroded
- Location: Lt Mlg Ww
- 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/UPS03440395

## Discrepancy

INSPECTION TYPE: C,  LT WING MLGWW - BS 1241 LBL 1 TO LBL 8 PRESSURE BULKHEAD WEB FOUND CORROSION AT BRACKET ATT SURFACE.  CORROSION BLEND OUT (0.068 X 2 X 8 INCH) NOT WITHIN SRM 57-10-01 LIMITS, FOR REPAIR REER HX RS NR R53-43-34986 & UPS EA 747-53-20125.

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