Table 1. Operator Preventive Maintenance Checks and Services (PMCS) for Improved Ribbon Bridge Ramp Bay (Contd).ITEM TONOT FULLYITEMCHECK/MISSIONNO.INTERVALSERVICEPROCEDURECAPABLE IF:TM 5-5420-278-100015 000015 00-2037DuringRight frontswivel hookassembly (1),indicator (3),and bilge plugs (2)a. Check hook for structural damage.b. Check that indicator is present.NOTEIf a hole is observed, monitorthe bridge or raft’sperformance. If visualevidence of taking on wateris observed (like riding low inwater), pump the water outwhile operations continue. Ifthe water intake is fasterthan the pumping capacity,remove and replace thedamaged bay. The damagedbay is deadlined until repairsare made.c. Ensure bilge plugs are secured andnot cracked or broken.a. Damage preventsproper hookoperation.c. Any plug ismissing, cracked, orbroken.312
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