As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GEAR WARNING HORN INTERMITTENT. HORN DIDN'T WORK DURING ROTARY TEST WITH APU. SHUT ALL ELECTRICAL OFF, DISCONNECTED BATTERY, RETRIED WITH BATTERY POWER AND HORN DIDN'T WORK. RETRIED WITH APU AND HORN CAME ON AFTER 15-20 SECONDS. REPLACED THE RT THROTTLE SWITCH BANK AND RIGGED SWITCHES IAW MM CH 76-11-00. GEAR WARNING HORN OPS CHECKED GOOD.