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Webbing lead-in strap subassembly standard length |
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|  MIL-R-8236F
spool retainer in such a manner that field replacement can be made without disassembly of the inertia reel. Slot
and retainers must meet all strength requirements, both at maximum and minimum dimensions of the webbing end
fitting. An end fitting in accordance with Figure 8 shall be provided for attachment to the inertia reel spool. The
webbing shall be protected at the point of attachment to prevent damage by snagging or rubbing. Dimension "A"
on Figure 3 shall be as specified in the acquisition requirements (see 6.2.1(c)). Total webbing length is the
standard length plus dimension "A" (see 4.4.3.2.1).
3.4.3.2.1.1 Webbing lead-in strap subassembly standard length (MA-6, MA-8, MA-14, and MA-16 type
inertia reels). For inertia reels of the MA-6 and MA-8 types. the standard length of the webbing lead-in strap
subassembly shall be 18 inches of 0.070 to 0.075 inch thick lead-in webbing. For testing purposes, the webbing
lead-in strap subassembly sha1l be 24 inches. For inertia reds of the MA-14 and MA-16 types, the standard length
of the webbing lead-in strap subassembly shall be 24 inches of 0.070 to 0.075 inch thick lead-in webbing. For
testing purposes. the webbing lead-in strap shall be 30 inches. The webbing lead-in straps shall have a fitting, as
depicted in Figure 8 (see 4.4.3.2.1. 1).
3.4.3.2.1.2 Webbing lead-in strap subassembly interchangeability (MA-6, MA-8, MA-14, and MA-16 type
inertia reels). For inertia reels of the MA-6, MA-8, MA-14, and MA-16 types, the inertia reel spool shall be
capable of accepting all same type QPL webbing lead-in strap subassemblies and perform in accordance with the
proof and ultimate load requirements specified (see 3.5.4, 3.5.4.1, 3.5.4.2) as a separate subassembly.
3.4.3.2.1.3 Webbing lead-in strap Subassembly design requirements. The webbing lead-in subassembly shall
meet the following design requirements:
a. Dimensions (see Figures 3.7 and 8.3.4.3.2).
b. Materials (see 3.3).
c. Design and construction (see Figure 4, 3.4).
d. Environmental (see 3.5.5).
e. interchangeability (see 3.4.3.2.1.2).
f. Design static strength (see 3.5.7).
3.4.3.2.1.4 Integrated restraint harness assemblies. The spool of the MA-6, MA-8, MA-14, and MA-16 type
inertia reds shall be capable of accepting and retaining the lead-in webbing of applicable integrated restraint
harness assemblies with an appropriate end fitting to spool retainer. Slot and retainers must meet all strength
requirements, both at maximum and minimum dimensions of the webbing end fitting. Interchangeability of the
integrated restraint harness assembly shall be demonstrated during service installation verification prior to
approval for QPL.
3.4.3.3 Manual control handle subassembly operational requirements. An external manual control handle
subassembly shall be provided for manual operation. The structural load bearing pieces of the handle subassembly
shall be capable of accepting without performance degradation the loads generated by usage, being stepped upon,
and other cockpit abuses. The control handle shall have 2 distinct positions, "auto-lock" and "manual-lock".
Means shall be provided for retaining the control handle at either selected position. When the control handle is
mounted on the seat, locking of the cable drum or spool shall be effected by moving the control handle forward to
the "manual- lock" position. Unlocking the drum or spool shall be effected by moving the control handle rearward
to the "auto-lock" position. The control handle shall be capable of unlocking (ratcheting is acceptable) the inertia
reel while a load of 25 pounds is sensed at any webbing or cable extension length. The manual control handle
shall be provided with two No. 10 (0.193 inch diameter) bolt holes for attachment to the seat as detailed in Figures
9 through 11 for each type of inertia reel application. The control handle shall connect to the inertia reel via a
flexible push-pull cable (see 3.4.3.4). The static force required to move the control handle from each of its 2
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