EMI & Aircraft Navigation Systems
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Reports have linked electromagnetic interference (EMI) with airliner on-board communications and navigation systems with the use on such aircraft of passenger-carried portable electronic equipment (Nordwall, 1993, p. 32). The problem is exacerbated by two developments--portable electronic equipment has proliferated, and the smaller size and low-voltage characteristics of modern aircraft electronics causes them to be increasingly vulnerable to EMI. In response to these events, some airlines began restricting the use of portable electronic equipment by passengers (Westlake, 1993, p. 64). Among the equipment the use of which was restricted were mobile telephones, radios, compact disc players, laptop computers, cassette tape players, and calculators. The use of some types of equipment is prohibited during entire flights, while the use of other types of equipment is restricted only during take-offs and landings.The purpose of this research is to examine the problems associated with the use of passenger-carried portable electronic equipment on-board commercial airliners. The goal of this examination is to assess the significance of the electromagnetic interference emanating from passenger-carried portable electronic equipment. This assessment is based on an analysis of the available information. The scope of this examination is relatively broad. The electromagnetic spectrum conflict is explained, and the history of the pr
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p. S13). Several airlines suffered bad publicity as a consequence of this action. Interference with aircraft electronic systems, however, is potentially hazardous to flight safety within the contexts of both navigation and the in-flight control of the aircraft. The RTCA concluded, however, "that it is possible, although very improbable, for certain passenger-operated electronic devices to interfere with aircraft communications and radio navigation systems" (Quoted in Hunter, 1991, p. S14). The RTCA recommended to the FAA that passenger-operated portable electronic devices specifically not allowed include any radio transmitting device that intentionally radiates, such as citizens band radios, cellular radios and transmitters that remotely control devices such as toys and that all portable electronic devices not specifically allowed for use be prohibited during the approach, takeoff and landing phases of flight. While the FAA agreed with the RTCA findings and conclusions, decisions on restricting the on-board use of portable electronic devices were left as the responsibility of airline managements.
Airline Experience With Passenger-Initiated Electromagnetic Interference
Between 1988 and 1993, airline pilots reported over 20
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Approximate Word count = 1542
Approximate Pages = 6 (250 words per page)
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