• Where: AAR MRO Services, an aircraft maintenance, repair and overhaul (MRO) facility at Chicago Rockford International Airport in Illinois • Wha t: Ten X3301 optical flame detectors in each of two extremely large (119,000 sq. ft.) MRO hangar bays • Wh y: Provide fire protection for high-value aircraft assets, as well as workers and the hangar structure • A ppli ca ti o n cha l l enges: Huge physical area, field-of-view obstacles such as equipment and aircraft, EMI interference and “friendly fire” that can cause costly false alarms • Primary cho i ce facto rs: Industry-leading field of view, detection range and speed of detection; resistance to false alarm sources I n AAR’ s immense MR O hangar ba ys, fire pr otecti o n f o r toda y’ s air craft depends o n Det- T r

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