SDR SWIA202054710

Service difficulty report · Floor Support · Cndair CL6002B19

Difficulty date: December 4, 2020
Submitted: December 21, 2020
Operation: Air carrier
Aircraft: N944SW
Make and model: Cndair CL6002B19
Aircraft serial: 7764
Aircraft time: 39,658 hours, 38,213 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Floor Support
Condition: Corroded
Location: Bs 439-449
Stage of operation: IN
How discovered: 9
Nature of condition: O
Precautionary procedure: K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

CORROSION ON RBL 9 FLOOR BEAM BETWEEN FS 439 AND FS 449 ON INBOARD FLANGE, MARKED. C-CHECK RO 12/20/2020. REMOVED CORROSION ON FLOOR BEAM INBOARD FLANGE FROM FS 439 TO FS 449, REF CRJ200 SRM 2.85"L X 0.67"W X 0.011"/0.007"/0.006"D. ORIGINAL MATERIAL THICKNESS IS 0.060", REF CRJ200 SRM AND STANDARDS MANUAL, LOWEST REMAINING THICKNESS IS 0.049" FOR A LOSS OF 0.011". FOUND TO BE OUT OF ALLOWABLE LIMIT OF 0.005" MAX MATERIAL REMOVAL, REF BOMBARDIER REO. COMPLIED WITH MHIRJ REO.