# SDR IPXA2B71257

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 17, 2012
- Submitted: January 30, 2012
- Operation: Air carrier
- Aircraft: [N578UP](https://openairdocs.org/aircraft/N578UP), registered now
- Make and model: Boeing 747-45E
- Registry model: [Boeing 747-45E](https://openairdocs.org/model/boeing-747-45e) (OpenAirDocs)
- Aircraft serial: 27154
- Aircraft time: 81,457 hours, 13,958 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Floor Support
- Part number: 65B0616558
- Condition: Corroded
- Location: Bs 1940-2000
- 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/IPXA2B71257

## Discrepancy

INSPECTION TYPE:C, BULK CARGO COMPT STA 1940 TO 2000, RBL 45 FLOOR PANEL SUPPORT UPPER & LOWER SURFACE FOUND SEVERAL AREA CORRODED.  ORG MATL IS BAC1500-6204-7075T6 & THICKNESS IS 0.040",  BLENDED DEPTH IS 0.037", WIDTH 1"& LENGTH 2" OUT OF LIMIT, DAMAGED AREA CUT OFF LENGTH IS 70", THIS IS A MAJOR REPAIR WITH MATL BAC1500-6204-7075T62 AS FLOOR SUPPORT REPAIR SECTION AND 7075-0-0040IN AS REPAIR ANGLES (HEAT TREAT TO T6 CONDITION AFTER FORMING), REPAIR SIZE IS 70.5"

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