As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON LANDING WOW CAS MESSAGE ILLUMINATED. DURING INVESTIGATION IT WAS FOUND THE BOLT (AN4-27) THAT SECURES THE TRAILING LINK ASSEMBLY (PIVOT PIN 523.10.12.210) HAD SHEARED. THE SHEARED AN4-27 BOLT ALLOWED THE PIN TO ROTATE FREELY IN THE TRAILING LINK, THIS CAUSED THE WOW PROXIMETY SWITCH TO MALFUNCTION DUE TO THE PROXIMITY TARGET BEING MOVED FROM SET POSITION.