As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMER LIGHT SWITCH: DURING BEFORE ENGINE START FLOW, SWITCH IS MOVED INTO ARM POSITION AND ALL AIRCRAFT EMERGENCY LIGHTS INCORRECTLY TURN ON BOTH INSIDE AND OUTSIDE. THIS SHOULD NOT HAPPEN WITH NORMAL AIRCRAFT POWER SUPPLIED THROUGH GPU. // SIGNOFF// REMOVED EBS P/N 645QLS-00 S/N 001946, INSTALLED EBS P/N 7450LS-00 5/N 005325. REF PHENOM 300 AMM 33-52'.01-000-801. OPS CHECK GOOD