As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AUTOSPEED BRAKE EICAS MESSAGE ON FINAL APPROACH WHEN SPEEDBRAKE IN ARMED POS AFTER 7 SECONDS. AUTOSPEED BRAKE EICAS MESSAGE ON FINAL APPROACH WHEN SPEED BRAKE IN ARMED POSITION AFTER 7 SECONDS. REPLACED K518 AIRGROUND RELAY AND ACCOMPLISHED SYSTEM CHECK. ALL CHECKED OK.