From Allan Gibson
With reference to Lufthansa’s “weird” ban on CD-ROM drives
(Letters, 28 March, p 64),
the airline is probably extending an existing ban on personal CD
players to computers.
In the only case of interference from personal electronic equipment that I am
aware of, an early CD player jammed the instrument landing system on an airliner
in the mid-1980s. Because CD players are optical devices, some of the cheaper
models did not include any shielding against radio-frequency (RF) interference
from the logic devices in their controllers and were therefore quite noisy in
the RF bands.
Allan.Gibson@fluordaniel.com
