PAR38 MALSR sawv cev rau "Medium Intensity Approach Light System with Runway Alignment Indicator Lights". Cov khoom no yog ib qho kev pabcuam hauv kev tsav dav hlau siv los muab kev taw qhia thiab kev qhia thaum lub dav hlau tsaws. Feem ntau nws muaj cov teeb uas tau teeb tsa rau ob sab ntawm txoj kev khiav kom pom txoj kev mus txog thiab qhia txog qhov sib dhos ntawm lub dav hlau. PAR38 hais txog qhov loj thiab cov duab ntawm lub teeb, uas feem ntau yog ib qho ntawm cov lus qhia rau lub teeb PAR sab nraum zoov. Cov teeb no feem ntau siv refraction lossis projection los muab cov kaum sab xis thiab cov teebmeem ci ntsa iab.