What was found
CABIN EMERG LIGHT: CABIN EMERGENCY LIGHTS ARE FLASHING WITH THE EMER LT SWITCH IN THE "ARMED" POSITION.REMOVED #2 EMER BATTERY P/N: 7450LS-00 S/N: 005071. INSTALLED MODIFIED EMER BATTERY IN THE #1 POSITION P/N: 1359S-00 S/N: 001388M. INSTALLED MODIFIED EMER BATTERY IN THE #2 POSITION P/N: 640-13595-00 5/N: 001413M, PERFORMED EMERGENCY LIGHTS OPERATIONAL CHECK PER TASK 33-52-0-710-801-A. CHARGED BOTH BATTERIES FOR THE REQUIRED 90 MIN. OPS CHECK NORMAL REINSTALLED ALL ACCESS PANELS AND REINSTALLED PILOT AND COPILOT SEATS. WORK DONE IAW PHENOM 300 AMN 33-52-01