# SDR SWIA2020021848568

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 5, 2019
- Submitted: February 18, 2020
- Operation: Air carrier
- Aircraft: [N689CA](https://openairdocs.org/aircraft/N689CA), registered now
- Make and model: Cndair CL6002D24
- Aircraft serial: 15133
- Aircraft time: 30,603 hours, 19,857 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Floor Support
- Condition: Corroded
- Location: Bs 693-847
- 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/SWIA2020021848568

## Discrepancy

* R/H PRESSURE FLOOR SILL ANGLES HAVE SEVERAL AREAS OF CORROSION BETWEEN FS 693.00 AND FS 847.00.   (C-CHECK) RO 2/14/2020   REMOVED CORROSION FROM R/H PRESSURE FLOOR SILL ANGLES BETWEEN FS693 TO FS847 AT THE FOLLOWING LOCATIONS: LOCATION 1: FS735.75, LOCATION 2: FS741.50, LOCATION 3: FS750.25, LOCATION 4: FS756.75, LOCATION 5: FS768.75, LOCATION 6: FS778.25 AND LOCATION 7: FS815.25 REF. CRJ900 SRM. ORIGINAL THICKNESS OF R/H PRESSURE FLOOR SILL ANGLES BETWEEN FS693 TO FS847 IS .125€? REF. CRJ900 SRM. MATERIAL REMAINING AFTER REMOVAL OF CORROSION AT LOCATION 1 AT FS735.75 IS .117€?, FOR A MATERIAL LOSS OF .008€? OR 6%, LOCATION 2 AT FS741.50 IS .121€?, FOR A MATERIAL LOSS OF .004€? OR 3%, LOCATION 3 AT FS750.25 IS .120€?, FOR A MATERIAL LOSS OF .005€? OR 4%, LOCATION 4 AT FS756.75 IS .119€?,FOR A MATERIAL LOSS OF .006€? OR 5%, LOCATION 5 AT FS768.75 IS .115€?, FOR A MATERIAL LOSS OF .010€? OR 8%, LOCATION 6 AT FS778.25 IS .115€?, FOR A MATERIAL LOSS OF .010€? OR 8%  AND LOCATION 7 AT FS815.25 IS .118€?, FOR A MATERIAL LOSS OF .007€? OR 6%, BUT R/H PRESSURE FLOOR SILL ANGLES BETWEEN FS693 TO FS847 ARE OUT OF LIMITS€”NO ALLOWABLE LIMITS PROVIDED.  RE

---
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.