A multifiber mechanical splice concept has been developed for simultaneous mechanical joining of optical fibers in cable. This splice uses a novel 'multifiber positioner' to secure and precisely position the mating pairs of individual optical fibers to achieve excellent light throughput characteristics. The multifiber positioner is a micromachined structure that includes multiple V-grooves in silicon created via anisotropic etching. This concept has been used to create a 4-channel optical splice suitable for aircraft application. The multifiber positioner is mounted on a flexible polymeric 'elevator' and housed within a protective metal shell. The splice and shell design have been developed to facilitate user-friendly operation. The shell assembly includes a novel method for cable attachment and provides an environmental seal. The splice design concept should allow practical field use in adverse conditions.