As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT REPORTED THE FOLLOWING LEFT AILERON FAIL CAS MSG. 27156413LAL.OSCILLATION EVENT OCCURRED. DURING INVESTIGATION OF DEFECT ALL REU CONNECTORS FOUND CONTAMINATED WITH SUSPECTED DC4 FLUID. REPLACED EB MANIFOLD, HA MANIFOLD, EHSA MANIFOLD, REU'S 1 AND 3 MCE.