negative contact

negative contact

i. A term used by pilots to indicate to ATC that (a) previously issued traffic is not in sight. It may be followed by the pilot's request for the controller to provide assistance in avoiding the traffic. It may also mean (b) the pilots were unable to contact ATC on a particular frequency.
ii. A term used by military pilots to indicate that they have no radar or visual contact with the target or traffic.
References in classic literature ?
A green- covered book appeared, with the same picture inside, and a few words written by their mother, which made their one present very precious in their eyes.
He was not of the Ned Winters family, who were very respectable people in Winesburg, but was one of the three sons of the old man called Wind- peter Winters who had a sawmill near Unionville, six miles away, and who was looked upon by every- one in Winesburg as a confirmed old reprobate.
Ned stopped short, thinking he was to be the victim of a holdup, but his fears were allayed when he beheld one of the police force of Shopton confronting him.
Under one of the windows there was a place for them to wash when they came in from work.
Pontellier to define to his own satisfaction or any one else's wherein his wife failed in her duty toward their children.
These gentle ones may keep close, but the Mohicans and I will watch upon the rock, where I suppose a major of the Sixtieth would wish to keep us company.
John laughs at me, of course, but one expects that in marriage.
One more bandage had been torn from his eyes, one more pitfall was revealed to him
Some have lost an arm, some a head, and one poor fellow is chopped off at the middle.
Now in your last one, on solitude, you haven't said anything very interesting, and you've made it too common and every-day to sound well.
One after another, several American enthusiasts rushed posthaste to Europe, with dreams of eager nations clamoring for telephone systems, and one after another they failed.
For infinitely various are the incidents in one man's life which cannot be reduced to unity; and so, too, there are many actions of one man out of which we cannot make one action.