From: email@example.com (Robert Dorsett) Date: 05 Jan 93 00:24:06 PST Followups: 1 2
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It'd be interesting to learn how MDC came to its very specific conclusion about the bank incident... :-) -- Robert Dorsett Internet: firstname.lastname@example.org UUCP: ...cs.utexas.edu!rascal.ics.utexas.edu!rdd ---------- >From AIRLINE PILOT, December 1992, p. 40: "McDonnell Douglas Corporation has warned all operators of DC-8, DC-9, DC-10, MD-11, and MD-80 aircraft about reported interference to avionics from passenger carry-on electronic equipment. The manufacturer further recommends that operators of its aircraft prohibit onboard use of 'any passenger-operated carry-on electronic radio transmitting device which intentionally radiates' electromagnetic energy. "The reason for the warning, said McDonnell Douglas Aircraft Company, is that a DC-10 recently '...abruptly banked to the right twice during climb to a cruising altitude. The suspected cause of these incidents was... a passenger operating a small audio [compact disc] player.' "In 1983, at the request of airlines, the Radio Technical Commission for Aeronautics began investigating the effects that carry-on electrical and electronic devices can have on the operations of aircraft systems. "RTCA compiled and analyzed data on the emission characteristics of various carry-on electronic devices and the effectiveness of aircraft cabin shielding in protecting aircraft radio navigation and communication systems. "Douglas continues to support these RTCA conclusions and recommendations but warns that 'many advances in technology... have greatly increased the number and variety of portable electronic devices that passengers may wish to operate onboard an aircraft.' "These devices, says the company, 'include, but are not limited to,' citizen-band radios, cellular telephones, transmitters that remotely control devices such as toys, and portable compact disc players. "Douglas also recommends that 'non-transmitting carry-on electronic devices not be used during takeoff and landing, or whenever directed by a crewmember.' The manufacturer suggests that these devices may be used at other times, 'provided that the operator of the aircraft has given permission for their use.' "Examples of these nontransmitting devices are audio and video recorders and playback devices, electronic games, computers and peripheral devices, calculators, FM receivers, televisions, and electric shavers. "In light of rapidly changing technology, FAA has again asked RTCA to study and make recommendations concerning portable electronic devices. As a result, a new RTCA special committee will be formed."