ARFAS (Aluminum Rail Fall Arrest System). Commercial aircraft maintenance hangar. Single “Pull-In Line” bay has coverage with 2 man ARFAS rails installed at fuselage line and each engine line. Inverted “H” I-beam mounting brackets. Skyloc II Aviation Series SRL’s installed on ARFAS trolley’s to limit fall clearances to 4’, including 2’ maximum extension, 1’ harness stretch and 1’ safety factor.