# SDR UPS06446998

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 7, 2006
- Submitted: May 31, 2006
- Operation: Air carrier
- Aircraft: N521UP
- Make and model: Boeing 747-200
- Registry model: [Boeing 747-200](https://openairdocs.org/model/boeing-747-200) (OpenAirDocs)
- Aircraft serial: 21944
- Aircraft time: 77,205 hours, 18,330 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Floor Support
- Condition: Corroded
- Location: Fuselage
- 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/UPS06446998

## Discrepancy

INSPECTION TYPE:C M/D BS 240-260 RBL 72 FLOOR SUPPORT CORROSION.  CORROSION BLEND OUT 0.028" X .5" X 1" EXCEED SRM 53-10-01 FIG 1 LIMITS.  M/D BS 220 TO BS 300 RT FLOOR SUPPORT REPLACED & INSTALLED AS PER SRM 51-10-01 PG 9 & 51-30-02.

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