Human Factors Analysis of Aircrew Operational Tasks in a Fixed-Wing Search and Rescue Aircraft Cargo Compartment (Analyse des facteurs humains lies aux taches operationnelles qui sont executees par les membres d'equipage dans la soute des avions de recherche et de sauvetage)

Abstract : The Joint Operational Human Sciences Centre (JOHSC), at the request of Director Air Requirements (DAR), conducted a human factors analysis of aircrew operational tasks in a Fixed-Wing Search and Rescue (FWSAR) aircraft cargo compartment. The aim of this study was to provide guidance on minimum cargo compartment dimensions based on operational duties performed by Search and Rescue Technicians (SAR Techs). Specifically, it includes an analysis of the entire workspace envelope, to determine compartment length, width and height requirements. A secondary aim was to address concerns regarding future risk of musculoskeletal injury to SAR Techs working in the cargo compartment of a FWSAR aircraft. The full range of operational tasks performed by SAR Techs in the current FWSAR aircraft was observed at squadrons in Trenton, Ontario and Comox, British Columbia. Space critical aerial delivery tasks and four relevant types of equipment were selected for analysis, including postural and spinal load assessments of manual materials handling (MMH) and anthropometry based on current SAR Tech demographics. Potential risk of musculoskeletal injury to SAR Techs during operational tasks was evaluated. Results were used to provide guidance based on ergonomics principals, standards in the industry, and current operational FWSAR procedures. Relevant anthropometry, secular growth trends, personal protective equipment (PPE) and workspace dimensions were considered. Based on a 99th percentile SAR Tech male (BoSS XXI), a minimal cabin compartment height of 198.7 cm, or rounded up 200 cm, is recommended. However, this value does not account for any head room clearance required under turbulent conditions.