As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE LT FLOOR SILL HAS TWO DECOMPRESSION PANELS WITH TORN OR MISSING DIAPHRAGMS. THE FIRST IS LOCATED BETWEEN FS 364 AND FS 379 AND THE SECOND IS LOCATED BETWEEN FS 453 AND FS 469. C-CHECK RO 9/20/2020. REMOVED AND REPLACED 2EA DECOMPRESSION PANELS LOCATED BETWEEN FS 364 AND FS 379 AND FS 453 AND FS 469, REF: CRJ 700 AMM & SRM.