As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INVESTIGATED FLIGHT CREW WRITE-UP OF TAKEOFF WARNING SYS INOPERATIVE. FOUND RT POWER LEVER TAKEOFF WARNING SWITCH ASSY TO HAVE HIGH INTERNAL RESISTANCE. REPLACED SWITCH ASSY AND ADJUSTED AS REQUIRED IAW THE MM 76-11-00. TAKE-OFF WARNING SYS CHECKS OK. RECOMMEND MFG INVESTIGATE WHETHER THIS IS A HIGH FAIL RATE COMPONENT THAT WOULD JUSTIFY A RECOMMENDED REPLACEMENT INTERVAL. TRANSIENT ACFT, HISTORY UNKNOWN.