# SDR UPS06446593

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 10, 2006
- Submitted: April 3, 2006
- Operation: Air carrier
- Aircraft: N681UP
- Make and model: Boeing 747121
- Aircraft serial: 19661
- Aircraft time: 106,939 hours, 27,146 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Floor Support
- Part number: 69B042743
- Condition: Corroded
- Location: Bs 1800-1820
- 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/UPS06446593

## Discrepancy

FLOOR SUPPORT AT BS 1800-1820 LBL55 FOUND CORROSION.  CORROSION BLEND OUT 0.040" BY 1" BY 1" EXCEED SRM LIMIT.  FLOOR SUPPORT REPLACED AS PER SRM 51-10-01 PG9

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.