The Hylifter HLM-20 aerial platform and airport mobile maintenance platform is an economic self contained hydraulic platform that fits in a ¾ or one ton pickup bed and provides 20’ vertical height and 25’ of working height. The HLM-20 can be supplied as a kit for installation and is as easy as drilling (8) holes and hooking up the furnished recharge isolator. The HLM-20 includes standard features such as round handrails, fail safe pump control relay, cylinder locking valve, low pressure-over sized cylinder corrosion proof rollers and maintenance support stands. The HLM-20 requires rear stabilizers. The HLM-20 has upper and lower controls and the lower controls override the upper controls in an emergency. An emergency down function is electrically actuated.