As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NO TAKEOFF LIGHT WILL NOT GO OUT IN PROPER T/O CONFIGURATION. LIGHT WENT OUT WITH ENGINES OFF AND CYCLE SPEED BRAKE SWITCH, LIGHT ON WITH ENG/HYD OPERATING. TROUBLESHOT SYSTEM, DISCOVERED LT SPEEDBRAKE RETRACT SWITCH FULL OF WATER AND DEBRIS. CLEANED CONNECTOR CHECKED BOTH LT AND RT RETRACT SWITCH CONTACT. NO DEFECTS NOTED PERFORMED TAKEOFF WARNING SYSTEM OPS CHECK WITH NO DISCREPANCIES. ALL WORK DONE IAW CESSNA 560XL MM 27-40-00.