Aircraft tail stand warning system

The present invention relates to jack stands for aircraft and, more specifically, to a portable adjustable height tail stand which attaches to the tail skid of an aircraft and includes a warning system which notifies persons working on the aircraft that the tail stand is in danger of damaging the aircraft. A tail support stand for aircraft which sounds an alarm when the tail lowers relative to the stand including a stationary vertical stand which rests on the ground having a passage therethrough, a slidable sleeve positioned in said passage with an aircraft engaging surface on the upper end thereof, the sleeve having a series of longitudinally spaced holes and a removable pin to insert in said holes. A stationary plate attached to the top of the stationary stand with an opening surrounding the sleeve, a movable plate with an opening concentrically positioned over the stationary plate with biasing means positioned between the plates resisting movement of the movable plate and audible aerosol actuated horn positioned between the movable and stationary plates which is activated when the said pin engages and moves the movable plate toward the stationary plate.