US PATENT SUBCLASS 342 / 65
.~.~ With terrain avoidance or alarm

Current as of: June, 1999
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342 /   HD   COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION)

61  DF  RETURN SIGNAL CONTROLS EXTERNAL DEVICE {7}
63  DF  .~ Aircraft guidance {2}
65.~.~ With terrain avoidance or alarm

DEFINITION

Classification: 342/65

With terrain avoidance or alarm:

(under subclass 63) Subject matter including means either (1) to automatically control the aircraft to follow ground contour or to prevent the aircraft from hitting ground based obstacles or (2) to develop signals to alert the aircraft operator.

SEE OR SEARCH CLASS

340, Communications: Electrical,

945, for aircraft alarm or indicating systems, per se.