As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HYD 2 LO PRESS CAUTION MSG//INBD FLT SPOILERS AND INBD SPOILERONS, FOUND O-RING ON PRESSURE TRANSDUCER MT127 OBLITERATED. REMOVED AND REPLACED O-RING ON MT127 IAW CRJ 550 AMM 29-31-01. AS PRECAUTION REMOVED AND REPLACED RETURN MANIFOLD FILTER ELEMENT IAW CRJ 550 AMM 29-11-46. OPS CHECK GOOD, NO LEAKS NOTED