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T.2.4.1 The Lap Belt, Shoulder Belts and Anti-Submarine Belt(s) must be securely mounted to the Primary Structure.
T.2.4.2 Any guide or support for the belts must be material meeting F.3.2.1.j
T.2.4.3 Each tab or bracket to which any part of the Harness is attached must:
a. Have a minimum cross sectional area of 60 mm2 of steel to be sheared or failed in tension at any point of the tab
b. Be 1.6 mm minimum thickness
c. Be aligned such that it is not put in bending when the attached part of the Harness is put under load.
d. Where Lap Belts and Anti-Submarine Belts use the same attachment point, there must be a minimum cross sectional area of 90 mm2 of steel to be sheared or failed in tension at any point of the tab.
e. Not cause abrasion to the belt webbing
T.2.4.4 Attachment of tabs or brackets must meet the following:
a. Where brackets are fastened to the chassis, no less than two 6 mm or 1/4” minimum diameter Critical Fasteners, see T.8.2 or stronger must be used to attach the bracket to the chassis.
b. Where a single shear tab is welded to the chassis, the tab to tube welding must be on both sides of the base of the tab.
Double shear attachments are preferred. Tabs and brackets for double shear mounts should be welded on both sides.