Appendix E: Glossary -Cont.

T-34C INSTRUMENTS

APPENDIX E

STEPDOWN FIX A fix permitting additional descent while on a segment of an instrument

approach. The fix identifies a point at which a controlling obstacle has been safely overflown.

STOP AND GO A procedure wherein an aircraft will land, make a complete stop on the

runway, and then commence a takeoff from that point.

STRAIGHTIN APPROACH IFR An instrument approach wherein final approach is

begun without first having executed a Procedure Turn. This type of approach is not necessarily

completed with a straightin landing or made to straightin landing minimums.

STRAIGHTIN LANDING A landing made on a runway aligned within 30 of the final

approach course following completion of an instrument approach.

TACAN An ultrahigh frequency electronic air navigation aid which provides suitably

equipped aircraft a continuous indication of bearing and distance (slant range) to the TACAN

station.

TRACK The actual flight path of an aircraft over the surface of the earth.

TRANSPONDER The airborne radar beacon receiver/transmitter portion of the Air Traffic

Control Radar Beacon System which automatically receives radio signals from ground

interrogators and selectively replies.

VICTOR AIRWAYS A route system established in the form of a corridor on controlled

airspace. The routes are predicated solely on VOR/VORTAC NAVAIDS. Victor airways

include airspace at least 1200 feet above the surface (sometimes higher) up to but not including

18,000 feet MSL.

VISUAL DESCENT POINT (VDP) A defined point on the final approach course of a Non-

precision Straightin Approach Procedure, normally defined by DME, from which normal

descent from the MDA to the runway touchdown point may be commenced, provided the

runway environment is in sight and a safe landing can be accomplished.

E-7

GLOSSARY