As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
REF: AD 71-24-10 AND BEECH SI 0254-156 REV IV. AD HAD BEEN C/W ON AIRCRAFT. UNKNOWN IF ORIGINAL PART. THE ADAPTER SHAFT AND ADAPTER PLATE BROKE APART AT WELD. ALTHOUGH THE CORRECT NEW PART NUMBER HAD BEEN INSTALLED, THE ADDITIONAL WELD AS SHOWN IN FIG 4 OF SI HAD NOT BEEN ACCOMPLISHED ON NEW PART. SUBMITTER RECOMMENDED ALL AIRCRAFT RECEIVE NEW REVISED PART NUMBER.