Appendix A Glossary - Cont'd

T-6A INSTRUMENT NAVIGATION

APPENDIX A

ESTABLISHED ON COURSE - When the aircraft position is within 5 radials of the selected

course and the aircraft's movement is in the same direction as the selected course. A shallow

intercept to course will be defined as aircraft heading within 30 of the desired course.

EXPECTED FURTHER CLEARANCE (TIME) - The time an aircrew can expect to receive

clearance beyond a clearance limit.

FINAL APPROACH SEGMENT - The segment of an instrument approach between the FAF

and the MAP.

FINAL APPROACH FIX - The fix from or over which final approach (IFR) to an airport is

executed.

FIX - A geographical position determined by reference to one or more radio NAVAIDs. A fix

can be defined as the actual location of the NAVAID, a distance and radial from a NAVAID, or

the crossing point of 2 different radials from 2 different NAVAIDs.

FLIGHT PLAN - Specified information provided to ATC facilities, relative to the intended

flight of an aircraft.

FLIGHT SERVICE STATION - A facility operated by the FAA to provide flight assistance

service. (Their call sign is "_______ Radio", EXAMPLE. "Anniston Radio")

GROUND CONTROLLED APPROACH - A radar approach system whereby a controller

interprets a radar display, transmitting approach instructions to the pilot by radio, to place the

aircraft in position for landing. The approach may use ASR providing course and range

information or PAR providing course, range, and glideslope information. Usage of the term

"GCA" by aircrews is discouraged. Aircrews should specifically request a "PAR" or ASR

approach.

HEADING - The direction the longitudinal axis of the aircraft is pointed, usually expressed in

degrees magnetic.

HEIGHT ABOVE AIRPORT - The height of the MDA above the published airport elevation.

Published in conjunction with circling minimums.

HEIGHT ABOVE TOUCHDOWN - The height of the DH or MDA above the highest runway

elevation in the touchdown zone (first 3000 feet of the runway). HAT is published on instrument

approach charts in conjunction with all straight-in minimums.

INITIAL APPROACH FIX - The fix depicted on an IAP chart that identifies the beginning of

the initial approach segment.

INITIAL APPROACH SEGMENT - The part of an instrument approach between the IAF and

the intermediate or FAF or point.

INITIAL CONTACT - The first radio call you make to a given facility or a different controller.

GLOSSARY A-3