finger trouble
 n.— «Iberia and Spantax pilots, more than most, have been having what safety experts call “finger trouble.” They have been hitting the wrong numbers on the inertial navigation system keyboard.» —“Off Course: Spanish Airlines Make More Than Their Share Of Navigational Errors” by William M. Carley in Madrid Wall Street Journal June 6, 1984. (source: Double-Tongued Dictionary)

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