TD-1A and TD-1B Tie-Down Assemblies
The quick-release TD-1A and TD-1B tie-down
chain assemblies (fig. 10-9) are now used almost
exclusively aboard ship and ashore. These assemblies
consist of a locking and release mechanism, tension
bar, adjustable tension nut, and a chain, each with a
hook at one end. Figure 10-10 shows a close-up of the
proper installation. Both assemblies are available in
two different lengths, 9 foot and 14 foot, and are fully
adjustable from a foot and a half to full extension.
A/B Tie-Down Assembly
This tie-down is called the (Aero) full-power
tie-down assembly (fig. 10-11). It is commonly called
10-30
TENSIONING
UNIT
LARGER
RADIUSED END
RELEASE LEVER
TENSION
BAR
S-HOOK
OVERSIZE LINK
TD-1A
TD-1B
ANf1009
Figure 10-9.—TD-1A and TD-1B chain-type tie-down
assemblies.
INCORRECT ASSEMBLY
CORRECT ASSEMBLY
RELEASE
LEVER
TENSION
BAR
TENSIONING
NUT
HOOK END
HOOK END
FREE
END
FREE
END
1. CORRECT INSTALLATION OF HOOK
2. INCORRECT INSTALLATION OF HOOK
ANf1010
FREE END
OF CHAIN
Figure 10-10.—Close-up showing proper installation of the TD-1A assembly.
