What was found
OVERHAULED VALVE FAILED SHOP GROUND TEST. VALVE (SN 493A), FAILED ON FIRST LANDING, CAUSING AN UNCONTROLABLE SHIMMY IN STEERING OF AIRCRAFT, VIOLANT SHAKING.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
OVERHAULED VALVE FAILED SHOP GROUND TEST. VALVE (SN 493A), FAILED ON FIRST LANDING, CAUSING AN UNCONTROLABLE SHIMMY IN STEERING OF AIRCRAFT, VIOLANT SHAKING.