TM 5-5420-278-24&P0018 000018 00-13Table 1. Unit Preventive Maintenance Checks and Services for Ramp Bay (Contd).ITEM TOITEMCHECK/EQUIPMENT NOTNO.INTERVALSERVICEPROCEDUREREADY/AVAILABLE IF:435~21Semi-Left foldlock annuallyassembly (4) and brackets (3)Inspect left foldlock assembly forstructural damage and proper movement.Damage preventsfoldlock fromsecuring ponton.22Semi-Left front annuallyouter ponton end skin surface (5)a. Inspect surface area for punctures,holes, tears, seam ruptures, cracks, andbroken welds.b. Inspect seams for cracked or brokenwelds.a. Damage whichcumulatively addsup to a holeapproximately .26 in. (.66 cm) indiameter (the size ofa typical pen orpencil).b. Cracked orbroken welds noted.
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