<h3><font color = "blue">Cessna: 182; Broken Nose Gear Lockdown Pins; ATA 3230</font></h3>
<p>A repair station technician describes the mechanical defect leading to this aircraft's accident. “The lockdown pins broke at the groove for the roll pins. This allowed the <em>(lockdown pins) </em>to move out of the actuator bearing's end to jam the actuator in the unlocked position. (See the attached parts manual illustration.) Cessna service bulletin SEB95-20 Actuator Downlock Pin Inspection says to check for loose pins. These pins were not <em>(noticeably) </em>loose in the end bearing until the part was thoroughly cleaned.” <em>(New assemblies are referenced: they use a retaining key which passes through the lockdown pin—eliminating the need for a roll pin groove.) </em>The submitter ends with the suggestion that older style actuators still in use be removed, cleaned, and checked for integrity (P/N 1280514-9). </p>