aviation parts s-tec sys 60 pss auto pilot purchased new 2005 never installed in my 63 p model beech bonanza due to medical problems.unit comes with programmer/annunciator,pitch computer,pressure transducer,servo actuator and most mounting hardware needed for installation.also included is installation drawings and stc covering h thru p model bonanza.unit provides altitude hold,rate of climb and descent control plus glideslope coupling.