# SDR SWIA2020021848565

- 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/SWIA2020021848565

## Discrepancy

* L/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 L/H PRESSURE FLOOR SILL ANGLES BETWEEN FS693 TO FS847  REF. CRJ900 SRM.  ORIGINAL THICKNESS OF L/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 .120€?, FOR A MATERIAL LOSS OF .005€? OR 4%, LOCATION 2 AT FS740.75 IS .122€?, FOR A MATERIAL LOSS OF .003€? OR 2%, LOCATION 3 AT FS755.25 IS .116€?, FOR A MATERIAL LOSS OF .009€? OR 7%, LOCATION 4 AT FS768.75 IS .120€?, FOR A MATERIAL LOSS OF .005€? OR 4%,  LOCATION 5 AT FS778.25 IS .123€?, FOR A MATERIAL LOSS OF .002€? OR 2% AND LOCATION 6 AT FS837.00 IS  .123€?, FOR A MATERIAL LOSS OF .002€? OR 2% BUT L/H PRESSURE FLOOR SILL ANGLES BETWEEN FS693 TO FS847 ARE OUT OF LIMITS€”NO ALLOWABLE LIMITS PROVIDED.  COMPLIED WITH BOMBARDIER REO.   RESTORED FINISH AND CIC.

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