Naval Aviation has redoubled its long-stand@g efforts to eliminate mishaps, especially those linked to human Errol. The focus was expanded not @ly to cover aircrew BIIOI, but maintainer error as well. To examine maintainer error, the Naval Safety Center's Human Factors Analysis and Classification System (HFACS) was adapted to analyze reportable Naval Aviation maintenance related mishaps (MRMs). A total of 470 MRMs for Fiscal Years 90-97 were analyzed. The HFACS Maintenance Extension effectively profiled the nature of maintenance errors and depicted the latent supervisory, working, and maintainer conditions that "set the stage" for subsequent maintainer acts that wae the proximate factors leading to a MRM. The profile and general findings held true for both major MRMs and less severe, reportable MRMs. 3-77s

The field of human factors endeavors to optimize and standardize interfaces in achieve the best fit possible, to include the design of instructional material. The authors an attempt to have observed that airline passenger safety cards vary greatly in layout, construction, etc. and could benefit from quidelines presented in the pertinent literature. The present effort examined both user preference as well as card effectiveness. It was found that cards which implement recommended techniques are more preferred and effective than those that do not.

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The advent of modern optics technology has decidedly changed the face of inventory control. It is now commonplace to see optically read “bar codes” on things. One popular application has been in supermarkets. Generally, optical scanners are used to read “UPC” labels that are linked with price and inventory information databases, that respectively permit automatic pricing and inventory monitoring. This technology is also contended to eliminate fatigue caused by searching for prices and entering them into a cash register keyboard. However, along with this benefit comes a drawback, the physical overload caused by repetitively handling items, grabbing and manipulating them to properly set the bar code over the scanner, scanning the items by passing them in an extended position over a optical reader (sometimes more than once), and placing them beyond the location of the optical reader. The present paper examines three optical scanner stations and proposes various ergonomic design changes to make them more well suited for checkout personnel.